Comparing states with and without growth management analysis based on indicators with policy implications comment

In a recent volume of this journal, Nelson (Land Use Policy 16 (1999) 121) defines and computes several statewide indicators designed to evaluate the effectiveness of growth management efforts in Oregon and Florida. Two indicators are intended to measure how well states have contained urban sprawl and preserved farmland. They are computed using US Census of Population and US Census of Agriculture data. In this comment, I highlight potential problems associated with using these data to evaluate urban sprawl and farmland preservation, and recompute Nelson's indicators using alternative land use data. Differences and similarities between my indicators and those computed by Nelson are discussed.     

基于产权与利用视角的台中市土地变化分析

[目的]以我国台湾省台中市为研究对象,利用多源统计数据,对其2011—2015年土地产权变化及土地利用变化进行分析,以揭示台中市几年来土地产权变化和土地利用变化的主要特征。[方法]文章主要采用描述性分析和统计分析方法。[结果](1)2011—2014年台中市共计增加登记土地产权面积621 hm2,公私共有产权土地面积先减少后增加,至2014年达到643hm2。(2)已登记非都市土地总面积,从2011年起处于先减少、后增加的趋势,特别是2014年已登记非都市土地总面积增加较多,相对于2013年增加了1.4196万hm2。(3)都市发展区中的住宅用地、商业用地、文教用地、特定专用区的面积皆有增长,而工业用地、公共设施用地、其他区的面积有所下降;非都市发展区中的保护区面积比较稳定,而农业区、风景区和河川区的面积处在调整的状态。[结论](1)台中市私有土地面积占比处于下降趋势,但整体不是非常明显;土地所有制包括公有、私有和公私共有等多种形式完全可以共存;东南亚人取得的土地所有权数量在总体上增减变化不大;(2)台中市都市发展区用地虽有增长但增幅较小,而都市区土地、非都市区土地内部的用途竞争导致了各类用地功能区的面积此消彼长;土地所有制对城市用地扩展没有构成制约,即土地所有制不是城市发展的分歧所在;(3)非都市土地转换为都市土地,不仅取决于各类土地竞租能力的差异,还取决于都市发展计划与土地使用分区管制,土地用途转换应以经济高质量发展与居民社会福利增进为目标。最后,提出完善土地权利结构体系,增加公有土地面积占比来保障社会公共福利等政策建议。     

Using participatory mapping and a participatory geographic information system in pastoral land use investigation: Impacts of rangeland policy in Botswana

Since the 1980s, the spatial extent of communal grazing lands in Botswana has been diminishing due to rangeland privatisation and fencing associated with animal health policies. Spatial comparisons of pastoral land use transformations are particularly important where accessibility to grazing and water resources remains at the core of sustainable pastoralism policies. Achieving success in pastoral development research requires a sound understanding of traditional pastoralists’ information systems, including the nature of local spatial knowledge. This study explores local spatial knowledge through participatory mapping and a Participatory Geographic Information System to understand and analyse pastoralists’ grazing patterns, spatial mobility and the impacts of subdivisions and privatisation policies in Botswana’s Ngamiland rangelands. The study uses focus group discussions, historical analysis through key informant interviews, and participatory mapping exercises along with community guided transect walks. The resulting maps provide insights into the traditional tenure patterns of land use and the impacts of rangeland policy on traditional livestock spatial mobility and access to grazing lands. Privatisation and rangeland enclosures have resulted in the restricted movement of livestock and overstocking of floodplains and riparian rangelands, with some natural water pans becoming inaccessible to local communities. We conclude that the integration of local spatial knowledge can be used to foster better articulation and understanding of pastoralists’ tenures, which are often lacking in communal land administration systems. Such integrated analysis can contribute to sustainable pastoral land management policy toolkits in semi-arid rangeland environments and enable better land tenure and management decision making for sustainable land management.     

Watershed management in an urban setting: process, scale and administration

Efforts in post-industrial countries to refine environment and planning administration in the face of unprecedented urban growth have important implications for ecological systems and human quality of life. This paper uses the case of an urban riparian corridor in South East Queensland, Australia to contribute to understandings of interactions between land use planning processes, watershed management initiatives and broader administrative structures in urban and rapidly urbanising settings. In particular it examines the understudied application of watershed management to an urban setting. Analysis of changes to the structure and function of urban riparian corridor management over time show that changes have occurred as a result of broader policy and institutional change in three distinct phases: top-down watershed management policy (1996-2000), regional natural resource and population growth management policy (2001-2005) and the recent re-emergence of local government as the dominant actor in a multilevel networked context (2006-2008). Trends toward regional scale approaches and increased urban planning initiatives have tended to concentrate responsibilities for urban environmental management with local government. This is in contrast to most rural natural resource management experience, and highlights the importance of meta-governance frameworks in ensuring the enduring applicability of the watershed management model to urban and rapidly urbanising catchments.     

Landscape patterns of development under two alternative scenarios: Implications for conservation

The spatial pattern of urban development has important ecological and conservation implications. Urban sprawl, characterized by scattered and low-density urban development, is commonly criticized for its negative ecological impact. In response, growth management policies have been proposed in order to promote compact development, which is generally considered more favorable from an ecological perspective. Spatial simulations of land cover change are useful for comparing urban development scenarios and their potential effects. One aspect that has not received much attention is how the rate of development may affect differences between compact development and urban sprawl in terms of their potential impact to biodiversity conservation at the landscape scale. Our goal in this study was to compare the spatial pattern and landscape-scale conservation and ecological implications of sprawling development (expected under unregulated development) versus compact development (promoted by growth management policies) at different development rates. We focused on Israel's Mediterranean region—a region characterized by high human population density and heterogeneous land cover. Using a cellular automata model, DINAMICA-EGO, we calibrated and validated an urban development model for the period between 1998 and 2007. Using this period as a reference, we simulated two scenarios 20 years into the future: unregulated (resulting in a more sprawling development pattern) versus regulated development (resulting in a more compact development pattern). For each scenario we analyzed a range of development rates, and compared built-up area patterns, and several landscape-level attributes of natural habitats, conservation priority areas, and protected areas. We found that at development rates comparable to those observed during 1998–2007, there was no major difference between the two scenarios. At higher development rates, some differences between the scenarios emerged: natural core areas were more fragmented and smaller in their extent, and a higher proportion of conservation priority areas were expected to undergo development in the unregulated scenario. Overall, the regulated scenario was more favorable for conservation. Since the regulated and unregulated scenarios exhibited only minor differences in lower development rates, modifications to policy measures included in the regulated scenario should be considered in order improve its effectiveness.     

Urban spill over vs. local urban sprawl: Entangling land-use regulations in the urban growth of China's megacities

Rather than a bad case of urban sprawl, the physical expansion of China's megacities may be viewed as a combination of ‘urban spill over’ and ‘local urban sprawl’. This paper reviews land use regulations in their institutional context and argues that conflicts in land use regulation are related to ideologies of land ownership and embedded in different planning doctrines. These hypotheses are investigated with special reference to Guangzhou, the capital of Guangdong Province in southern China. The evidence suggests that entangled land use regulations for “urban” and “rural” land have imposed serious constraints on urban growth, while the contradictions of different policies and regulations in the use of rural lands for urban construction have led to intensive and unhealthy competition among stakeholders. As a result, not only have the costs of land conversion from rural to urban uses increased, but the spatial development of Guangzhou has been distorted. The implications of these failures for future policy are discussed with emphasis on the reform of the land use regulation system.     

Patterns of development and conservation in agricultural lands—The case of the Tel Aviv metropolitan region 1990–2000

Until the 1990s Israel was implementing a strict agricultural land preservation policy program, rooted in Zionist ideology. This was changed when shifts in Israeli planning and land policy towards the end of the 20th century brought about accelerated growth and sprawling development in agricultural lands at the urban–rural fringe, particularly in the Tel Aviv metropolitan region (TMR). In this article we describe the background for policy shifts and the resulting impact on metropolitan growth, and then proceed to identify patterns of development in former agricultural lands and their impact on conservation, based on a study of statutory land use plans converting agricultural land to built-up uses within the TMR. It was found that most of the plans were converting large tracts of agricultural land to residential uses, characterized by low-density suburban-type family housing, thus reducing considerably the spatial conservation potential. In addition, only relative small portions of land were conserved as public open space within plans’ boundaries, and even then only about half of that was actually effective for active open space uses.     

Development stressors are stronger than protected area management: A case of the Pantanos de Centla Biosphere Reserve,Mexico

Evaluation of the management effectiveness of protected areas has become a global priority, especially in coastal zones, where essential services are threatened by land use pressures. To assess the effectiveness of a coastal protected area, we estimated the land-use change (LUC) within and outside of the Pantanos de Centla Biosphere Reserve (PCBR) and interviewed key stakeholders to identify the main stressors causing LUC. The native vegetation cover under the PCBR protection decreased by 65% over 24 years; whereas agriculture and livestock lands doubled, even within the core conservation areas of the PCBR. The greatest loss was in the flooded forest (48%), where the reduction was similar in and around the reserve. The effectiveness of reserve management was affected by drivers of land use change, which include agricultural and livestock enterprises that are run by government programs. Effective management of the PCBR has been undermined by poor management practices, limited capacity and resources, and inadequate zoning design. Protected areas and its surrounding landscapes could be considered to be natural experiments for future research, where high value land uses and conservation objectives coincide within coastal areas that will face a predicted sea level rise, more intense floods and higher temperatures.     

城市新增建设用地扩张影响机制：基于PSR 框架的组态分析

研究目的：基于组态视角探究压力、状态和响应条件对城市新增建设用地扩张（NUCLE）影响的协同和替代效应,为推动城市空间有序治理和完善高质量发展格局下土地调控政策提供参考。研究方法：PSR机理分析和fsQCA法。研究结果：（1）单个压力、状态和响应要素并不构成影响NUCLE的必要条件,不同地区高水平NUCLE的实现是不同PSR条件因素共同作用导致的结果。其中,土地错配、人口规模和经济增长是最具有普遍性的影响因素。（2）压力、状态及响应条件“并发协同”,形成影响NUCLE的多样化组态,具体包括压力主导下多要素平衡型、压力和状态双重赋能型和压力—状态—响应互动型3种差异性模式。（3）在特定的客观禀赋条件下,财政激励和城市化可以通过等效替代的方式影响NUCLE。研究结论：地方政府应根据自身发展特点和资源禀赋,依据压力、状态和响应多重条件的联动匹配效应,“因地制宜”地制定城市新增建设用地规模调控和管理政策。     

Customary land allocation,urbanization and land use planning in Ghana: Implications for food systems in the Wa Municipality

Food insecurity remains persistent in the Global South due to constraints in food production capacities and intricate land tenure systems that stifle investment in agriculture. In the urbanized regions, uncontrolled urbanization and non-compliant land use systems have further worsened the potentials for urban food production. This research is based on a case study of the Wa Municipality in order to assess the influences of customary land allocation and peri-urbanization on land use planning and foods systems in Ghana using explorative and narrative research approaches. The study identified that customary stakeholders responsible for allocating such lands in the Wa Municipality were indiscriminately converting large tracts of hitherto agricultural lands to urban land uses. Statutorily prepared land use plans are hardly enforced and the planning priorities are on residential and commercial land uses that command higher land values to the detriment of agricultural lands. Weak institutional linkages also characterize the mandated planning and land administration institutions, with a planning system that is reactive rather than proactive in addressing development control challenges across the country. There is the need for planning authorities to adopt participatory land uses planning together with customary landholders and educating them on the essence of comprehensive land use planning approaches. Based on the findings, local governments need to partner landowners to identify and reserve high potential agricultural land for sustainable urban food production.     

Drivers of informal settlements at the peri-urban areas of Woldia: Assessment on the demographic and socio-economic trigger factors

Though Ethiopia is one of the least urbanized countries of the world, its urban areas are expanding rapidly. Woldia, which is a Zonal town is no exception to this trend and situation. As a result of its rapid horizontal expansion and growth, Woldia is currently confronted with different types of urban problems. The emergence and growth of informal settlements is one of these challenges. To that end, this paper investigates the foremost demographic and socio-economic triggering factors that played key roles for the growth of informal settlements at the peri-urban areas of Woldia. In order to achieve the objective of the study, a questionnaire survey covering a total of 244 sample households was carried out in addition to in-depth interviews, FGDs and key informants. Accordingly, the income disparity; the rise in the lease price of urban land, and the meager compensation paid to peri-urban farmers during their lands expropriation are among the key economic drivers for the growth of informal settlements. Similarly, ever-increasing urban population and inefficient land provision, and lack of housing affordability compounded by the rise in the rental accommodation are the other triggers factors. All these factors, among others, point to the fact that socio-economic and demographic factors are all tied to the immediate growth of such settlements. Thus, lands at the periphery are misused and the situation has greatly contributed to the unlawful and rapid expansion of built-up areas in the city administration.     

Strategic targeting of agricultural conservation easements as a growth management tool

Public and private programs have preserved an estimated 730,000 ha of agricultural land in the United States by acquiring agricultural conservation easements (ACEs) that retire a property's development rights. ACEs could be a potent tool for smart growth if strategically targeted. This paper attempts to quantify measures of strategic targeting of ACEs as guidance for planners. Evaluating the placement of 157 ACEs in the San Francisco Bay Area of California produced mixed results. Preservation and development of agricultural land were both consistent with general plans. In contrast, we found little evidence of ACEs being used on a regional scale either to reinforce urban growth boundaries or to coalesce with other open space to form large contiguous blocks of protected areas. We used the TOPSIS method (Technique for Order Preference by Similarity to Ideal Solution) to identify the most strategic agricultural lands, which are quite different from where easements have been established through 2002. We encourage planners to consider strategic targeting of ACEs as a politically acceptable mechanism to complement traditional planning tools to minimize low density sprawl.     

绍兴市土地利用时空变化研究

[目的]探讨经济发达地区土地利用变化时空规律,为城市发展提供合理土地利用政策,同时优化土地利用结构以支持经济可持续发展。[方法]通过遥感影像获取长时间序列的土地利用数据,探讨近30多年来绍兴市的土地利用变化,进一步利用土地利用动态变化模型,对绍兴市土地利用变化过程、趋势、变化轨迹进行了深入分析。[结果](1)绍兴市土地利用在1980~2000年相对稳定,在2000年后变化强度逐年增强,2005~2015年土地利用转化量增多和类型多样。绍兴市东北部平原和县区核心区域是经济发达地区土地利用变化的活跃区域,主要是其他类型土地向建设用地转移;(2)1980~2015年绍兴市土地利用变化轨迹主要受到人口增长和GDP增长的影响。[结论]城市化的发展和人口的迅速增长,使城市人口和土地面积迅速增加,造成城市边缘的农业用地转化成了建设用地。经济的发展、科技的进步及政府政策的制定,改变了人们的生活和工作方式,进而影响土地利用类型。     

Assessing urban growth and rural land use transformations in a cross-border situation in Northern Namibia and Southern Angola

The Okavango catchment is a hot spot of accelerating land use change. In particular, climate predictions, demographic developments and a growing utilization of ecosystem services and functions are expected to increase pressure on resources and land. Land use conflicts, the sustenance of precarious livelihoods, deforestation of woodland savannahs, upstream–downstream water issues and human–wildlife conflicts are among the processes that are characteristic of policy and management challenges in the region. In the Eastern and Western Kavango regions of Namibia and the Cuando-Cubango province of Angola, a unique cross-border situation exists that allows assessing how the combination of local traditions, regional land management and national policies determines spatial patterns of land use and land cover transformation processes.To map major land use types and change processes we used a set of multi-temporal Landsat-5 TM and Landsat-7 ETM+ data sets, support vector machine (SVM) classification and iterative spectral mixture analysis (ISMA) on images covering the period from 1990 to 2010. Integrating satellite imagery with literature reviews, interviews, census and household survey data, we assessed the contrasting development of resource utilization on both sides of the Okavango River. We investigated if and how policies and regulations at different levels drive land use decisions, and how these decisions manifest spatially.We found a strong and interconnected urban growth on both sides of the river. The area around Rundu has constantly been evolving to become Namibia's second largest city, also functioning as a hub of development and transborder commerce with opposing Calai. This trend was found to affect adjacent settlement areas and cause widespread conversion of woodland savannahs to agricultural land or their utilization for timber extraction. The conversion of woodland savannah to arable land was by far the dominant land use change process on both sides of the river, with a total conversion area of 460 km² (Namibia) and 293 km² (Angola) observed during the observation period. Strong spatial change gradients occurred in relation to determining factors, such as accessibility, proximity to water, urban centres, etc., while relations to settlements where less obvious. Assessing results by country illustrated the difference in land use intensity and resource consumption between Angola and Namibia, which relate directly to historical developments, with a long period of stability in Namibia standing opposed to the recent and ongoing recovery from civil war in Angola. These are added to by statutory and traditional policy frameworks, the national endowment with natural capital (e.g. oil, uranium, diamonds, zinc) and the integration into global markets, which strongly affects national economies of both countries at large.Underlying land use decisions were found to be largely driven by individualized perspectives on growth ideologies, consumerism and wealth-aspirations connected to globalization processes. However, at present the result of these perspectives is still mainly a small-structured conversion to rainfed agriculture as a component of subsistence strategies of local livelihoods, and thus stands opposed to other regions of the world, where change processes are much more driven by large companies or follow national regulations and result in more intensive uses.     

Land administration “best practice” providing the infrastructure for land policy implementation

Land administration systems, and particularly their core cadastral components, are an important infrastructure which facilitates the implementation of land use policies. While most land administration systems traditionally have a primary objective of supporting the operation of land markets, they are increasingly evolving into a broader land information infrastructure which supports economic development, environmental management and social stability in both developed and developing countries. While a great deal of attention is given to land use policies worldwide concerned with such areas as forest management, coastal zone management, environmental sustainability and managing the urban environment, less attention is given to the infrastructures which facilitate the implementation of the associated policies and programmes. Importantly, all these activities rely on some form of land administration infrastructure which permits the complex range of rights, restrictions and responsibilities in land to be identified, mapped and managed as a basis for policy formulation and implementation. As a result, there is an increasing interest in the concept of land administration infrastructures and their core cadastres, in the principles and policies concerned with establishing such infrastructures and in “best practices”. In addressing this need, this paper attempts to explain the evolving concept of land administration infrastructures, the concept of “best practice” and the concept of a land administration “tool box” of principles, policies, laws and technologies which are useful in reforming or re-engineering land administration systems in support of a broader land policy agenda.     

Public policy change and its impact on urban expansion: An evaluation of 265 cities in China

Public policies play a vital role in shaping our cities. However, the impact of public policies on the spatial expansion of urban areas needs to be better understood in order to achieve better policy outcomes. During the period of China’s economic reform, the central government of China has made many changes in three sets of public policies—regional development policies, the household registration (hukou) system, and urban land and housing market policies—to promote coordinated development of small, medium and large cities. This study aims to examine the effects of these public policy changes on urban expansion across 265 Chinese cities at or above prefecture level. We first quantify the spatial patterns of urban areas and evaluate the extent of urban sprawl of the 265 cities from 1995 to 2015 using multi-temporal land cover data. These cities are classified into six categories according to a city tier system used in China. Through a set of individual fixed-effects models, we then explore how changes in the three sets of policies have influenced urban expansion differently across different-tier cities. Results show that sprawling patterns of urban expansion, which have been more prominent in small and medium sized cities since 2000, are associated with shifts in policies to support stronger economic and population growth as well as real estate development. Our findings highlight the need for policymakers to take a holistic approach by considering the size of cities together with their social, environmental, and economic characteristics in order to minimise inequality and achieve coordinated urban development goals.     

Integrated research on land-use changes in the face of urban transformations – An analytic framework for further studies

We state that land use is under constant pressure, no matter if land-use changes take place in growing or shrinking cities. Land-use changes witness multiple interdependencies between environmental, social and economic factors. In urban areas land is highly exposed to accelerating consumption which makes it a scarce and precious resource. Therefore we need transformative processes to deal with land use in a more sensible and responsible way. We define urban transformations as fundamental, multi-dimensional changes in urban land-use patterns, population developments, infrastructures, governance regimes as well as established values, norms and behaviours. A central focus is on land use and its changes to supply ecosystem services as key driver for quality of life. Most important for us is that transformative processes are highly dynamic and non-linear, thus affecting functions of urban land uses in different ways and with varying consequences. In this sense, governance research is a decisive component to implement our research in practice. With this viewpoint we want to contribute to a debate on land-use changes in alternating growing and shrinking cities to foster appropriate development responses for urban transformations towards sustainability.     

The land resource: Policy and management

Summary

This paper advocates the preparation by major urban planning authorities of land budgets to obtain a satisfactory balance between the development of derelict or vacant land and greenfield sites. Such budgets, requiring a city‐regional dimension, should be implemented by the public and private sectors, both of which need to find means of channelling profits from peripheral or out‐of‐town projects to counter losses on the development or ‘greening’ of inner‐city sites. Suggestions are made as to the form of land budgets, and the means by which they could be put into effect. The paper reviews briefly the various outlooks on the issue of balance between the development of urban and rural land, and the state of the art of priority setting for this purpose by central and local government. Although high standards are set by a few metropolitan areas in accounting for and monitoring the land resource, this is by no means widespread. Indeed in several major urban areas the matter does not even appear to be treated as a policy issue. Amongst the measures required to improve the situation is the need for wider use of skills attuned to development finance and management.     

Energy and urban form. The growth of European cities on the basis of night-time brightness

The European urban system has experienced significant transformations over the last two decades, affecting both the system’s articulation and hierarchy, and the morphology of urban areas. The sources of information on land use, although increasingly precise and exhaustive, present some limitations when it comes to identifying and quantifying this development, particularly due to their sporadic nature. In this context, the advances in the availability, precision, territorial coverage and recurrence of night-time satellite images offer new opportunities to assess the transformation of land uses. Under the assumption that there is a direct relationship between light emissions and the level of urbanisation, the present study identifies the development of the European urban system between 1992 and 2012. In this respect, the level of brightness suggests that the extension of urban land uses has been much greater than those calculated by using other sources, such as aerial photography or planning regulations. The contrast with these sources demonstrates that, even though night-time images are subject to significant limitations, their use can have advantages in the explanation of new patterns of land use. Thus, brightness could contribute to a more complex picture of the urbanization process, measuring not only the artificialisation of land but also the spread and intensity of urban uses of space.     

基于GIS及AUTOPLY的土地定级与质量评价研究——以成都市城厢镇为例

城镇土地定级成为评价土地质量好坏的必要手段,它也是土地管理的一项基础性工作;以成都市城厢镇为例,在GIS技术支持下,建立土地资源空间数据库,并在此基础上,借助于"AUTOPLY城镇土地定级估价软件"和MapInfo等地理信息系统技术,应用层次分析法和多因素综合评价法对城厢镇的土地质量进行了定量化评价,划分城镇的土地级别,以便进一步高效、可持续利用土地。