首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 15 毫秒
1.
Sustainable land use, targeted poverty alleviation (TPA) and integrated urban/town development are key issues for the poverty-stricken counties of China. This paper explored the spatio-temporal pattern and driving forces of construction land change in Longzhou, a typical poverty-stricken border county in southwest China, based on high-resolution remote sensing images and field investigations. The results showed that, from 2011 to 2016, the construction land in Longzhou increased by 10.08%. The largest increase shown by urban built-up areas (37.74%) followed by rural residential (25.48%), industrial and mining (20.96%), and transportation areas (15.49%) as well by tourist facility areas (0.33%). The accelerated urban development, rural housing construction, and construction of industrial parks and transportation facilities are main factors driving construction land expansion, while the implementation of TPA strategy and the booming of border trade activities are important policy drivers of the construction land expansion. Some of the major implications for improving poverty-alleviation-oriented land use policies were further discussed. The authors argue that land use policy innovation could play a key role in breaking the Matthew effect (poor get poorer, rich get richer) of China's uneven regional development and generating and accelerating the transformation development of poverty-stricken counties. It is fundamental to meet the demand of construction land for TPA, meanwhile raise the intensive level of land utilization. The authors suggest that the government need to further improve and implement preferential land use policies for poverty-stricken counties from the provincial level, appropriately increase the quotas of construction land, and effectively strengthen the rational, efficient and intensive use of the quotas of construction land, and provide solid land policy support for poverty alleviation and thus achieve the Sustainable Development Goals with higher quality.  相似文献   

2.
A strong link has been observed between urbanization processes and conversions of farmland to built-up land. Most previous research has addressed such conversion of farmland in relation to the expansion of larger cities. However, broader analysis of both rural and central areas is needed to increase the empirical basis for these claims. Based on GIS analysis of farmland conversions, this paper aims to expand our understanding of how urban sprawl affects conversion of farmland. We find that most farmland in Norway is converted to built-up areas in relation to existing urban settlement areas. In line with population growth, urban areas in the most central municipalities experience the most significant urban sprawl and loss of farmland. Moreover, the remaining farmland is located in the same areas that already have converted the most. These areas also experience significant pressure for continued land take. Assuming current trends continue, future urban sprawl will pose great challenges for the preservation of farmland in land-use planning. New research and policies are required to handle these challenges more effectively.  相似文献   

3.
Bogotá and the 17 neighboring municipalities make up one of the biggest metropolitan areas in Latin America. However, despite strong functional interactions within the area, there is no official government body at this level in charge of coordinating authorities and providing solutions to the wide variety of issues arising in the regional urban land system. Aiming at providing an insight on future land-use developments linked to new transport infrastructures and at offering a tool to support territorial decision-making, this paper presents a cellular automata-based (CA) model based in Metronamica® software, that allows testing different scenarios based on potential land-use policies, environmental suitability and transport alternatives.There has not been, so far, an urban planning tool that accounts for the complexities of this region. CA-based land-use simulations constitute a useful approach to understanding the impacts of urban planning policies and regulations. This tool can help to improve inter-territorial and inter-institutional coordination, which through planning and management policies seek a spatially integrated development, with a long-term perspective.The CA-based model proposed was calibrated to reproduce land-use changes between 2007 and 2016 using different methods and indicators. The model was used to simulate and analyze eight scenarios with different policy directions of transport infrastructure in the future of the region. The results of the simulations reflect the dynamics of territorial occupation. The calibration indices in the experiment indicate a high degree of suitability for the CA Bogotá model, proving its effectiveness and potential as a useful tool for decision-making. The results show that occupation scenarios with restricted developable zones within the city, tend to have the greater dispersion rate in the study area, compared to scenarios where land development plans are promoted in Bogotá, which representing a more compact development.  相似文献   

4.
新农村交通干线环境综合整治专项规划是近年来湖南省新农村规划的新方向,受湖南省桃源县规划局委托,笔者主持了桃源县新农村交通干线环境综合整治专项规划的编制工作,对这个新农村规划新领域迈出了实践探索的第一步。通过实地调研,分析自然资源条件、用地状况和基础设施现状,对沿线村庄建设用地布局规划、沿线村庄基础设施建设规划、沿线村庄重要节点设计及景观规划、沿线村庄公共设施布局规划、沿线村庄农村住宅建筑规划等五个方面进行了深入的理论研究与实践探索。  相似文献   

5.
城市化过程的城区形态变异是以建设用地的向外扩展为显著特征的,而空间扩展的规律、过程和特征是衡量城市化发展水平和模式的主要标准。研究基于近二十年来重庆市渝北建成区时空分布情况,应用遥感与地理信息系统技术,分析了渝北建成区空间扩展的面积、速率、方向、模式以及区内的道路建设扩展情况,揭示了渝北建成区以及道路建设空间扩展的规律、过程和特征,为该区域的城市规划、城市水土资源管理和宏观调控决策等提供了科学的依据。  相似文献   

6.
In the past few decades, urbanisation has become a major phenomenon in European cities, thus representing one of the key human land cover changes with socio-economic and environmental impacts. In the Lisbon metropolitan region it is estimated that 17% of natural and farmland have been transformed into artificial areas. Since the end of 1990s, specific EU guidelines have been issued to contain urban sprawl and preserve agricultural land. Spatial planning in Portugal obviously is integrating these assumptions into the statutory land-use master plans. But what is the performance of this land use planning system regarding land cover evolution itself? Based on the Lisbon metropolitan region (LMR), one of the major areas of urban growth in Portugal, we examine spatio-temporal land cover patterns between 1990 and 2007 by integrating cross-matrix analysis, spatial metrics, and gradient analysis. Additionally, we overlay these land cover dynamics with municipal master plans that regulate land development in order to assess the compliance levels of this land-use regulatory system. Results indicate that: artificial areas are growing by coalescence and/or by scattered development along an urban–rural gradient; agricultural land is reducing and fragmentation is increasing to enlarge peri-urban spaces; there are high levels of conversion of agricultural land into urban land in protected areas, thus showing a lack of compliance to the land use regulatory system visible in the existing gaps between the original land-use assignments of the master plan and the actual developments.  相似文献   

7.
This paper analyzes the spatio-temporal dynamic patterns of farmland and rural settlements from 1990 to 2006 in Su–Xi–Chang region of coastal China experienced dramatic economic and spatial restructuring, using high-resolution Landsat TM (Thematic Mapper) data in 1990, 1995, 2000 and 2006, and socio-economic data from both research institutes and government departments. To examine the spatial patterns of farmland and rural settlements and their change over time, a set of pattern metrics that capture different dimensions of land fragmentation was identified. The outcomes indicated that, to a large extent, land-use change from 1990 to 2006 in Su–Xi–Chang region was characterized by a serious replacement of farmland with urban and rural settlements, construction land, and artificial ponds. Population growth, rapid industrialization and urbanization are the major driving forces of farmland change, and China's economic reforms played an important role in the transformation of rural settlements. China's “building a new countryside” is an epoch-making countryside planning policy. The focuses of building a new countryside in coastal China need to be concentrated on protecting the farmland, developing modern agriculture, and building “clean and tidy villages.” Rural construction land consolidation and cultivated land consolidation are two important ways to achieve the building objectives. The authors argue that it is fundamental to lay out a scientific urban–rural integrated development planning for building a new countryside, which needs to pay more attention to making the rural have certain functions serving for the urban. In addition, the cultural elements of idyll and the rural landscape need to be reserved and respected in the process of building a new countryside in coastal China, instead of building a new countryside, which looks more like a city.  相似文献   

8.
城市建设用地的变化是其影响因子综合作用的结果。客观地把握驱动土地利用变化的方式、了解土地利用的变化特征,是实现区域可持续发展重要的决策基础。本文对建设用地和其影响因子预测方法进行了探索性的研究,建立社会经济发展对城市建设用地影响的数学模型;通过影响因子的回归预测,进而得到特定时期的用地指标预测值,为宏观把握建设用地的发展趋势和影响因素提供依据。  相似文献   

9.
In less-developed countries, the major global pressures of rapid urbanization and climate change are resulting in increased vulnerability for urban dwellers. Much of the climate impact is concentrated in urban and coastal areas, as urban development spreads into areas that are hazard-prone. Often this development is dominated by poor quality homes in informal settlements or slums on informal or illegally occupied or subdivided land.Urban development needs to be more climate-resilient to meet the post millennium development goals (MDGs) agenda. One of the elements in achieving climate-resilient urban development is the degree to which climate change adaptation and risk management are mainstreamed into two major elements of land governance, viz. securing and safeguarding of land rights, and planning and control of land-use.This paper proposes ways in which the growth of human settlements can be better managed through responsible governance of land tenure rights, and effective land-use planning to reduce vulnerability, provide adequate access to safe land and shelter, and improve environmental sustainability.  相似文献   

10.
Land-use change can significantly affect the provision of ecosystem services. On a local scale, zoning laws and other land-use regulations are commonly used to influence land-use change, but their effectiveness is often unclear. We evaluate the effectiveness of local land-use planning in concentrating development and minimizing impacts in riparian areas. We use spatially-explicit land cover data from the USGS Land Cover Trends project to measure development and disturbance rates before and after implementation of Oregon’s land-use planning system. We apply a difference-in-difference estimator to address the problem of non-random assignment of regulations on the landscape. We find that land-use laws in Oregon have concentrated development inside of UGBs and lowered development rates in riparian areas. However, disturbance in riparian areas has increased inside of UGBs. Overall, our findings suggest that local land-use planning can be an effective tool for promoting the provision of non-market ecosystem services.  相似文献   

11.
Differences in the internal composite structure during urban built-up land sprawl (UBLS) will generate different effects, and thus, a city’s spatial structure has important bearings on urban sustainability. This study investigates the spatial and temporal characteristics of the internal structure and allocation relationship of UBLS using multivariate spatial correlation and the Weaver-Tomas composite coefficient based on site data of granted built-up land parcels. Moreover, the composite structure evolution process of UBLS and its driving mechanism are examined in this study. The results reveal that the amount structure of the three types of UBLS (i.e. industrial land sprawl, residential land sprawl and commercial land sprawl) tended to be balanced during the study period. Following the transformation and upgrade of the urban industry structure, the overall composite structure of UBLS ranged from single residential land-use structure (Res.) to industrial-residential land-use structure (Ind.-Res.) In the early period of land marketization, the marketization land granting mechanism caused low spatial correlation between the various types of UBLS and a single composite structure, i.e. Res., single commercial land-use structure (Com.), and residential-commercial land-use structure (Res.-Com.). Subsequently, a dual-driving force including the market economy and government interventions caused a relatively high degree of spatial correlation and a multiple composite structure, i.e. Ind.-Res. and industrial-residential-commercial land-use structure (Ind.-Res.-Com.). However, the evolution characteristics of the composite structure in various regions illustrate some problems, such as the spatial isomorphism phenomenon of the composite structure and the dislocation of urban built-up land allocation. The urban internal built-up land spatial layout pattern is the embodiment of two dominant driving forces, the market and the government, interacting with each other according to natural and socioeconomic conditions. Therefore, we suggest that it is necessary to reform the future urban built-up land granting mechanism based on market guidance, and the composite structure of UBLS should be adjusted according to the regional function. The government should reinforce the macro-control of land-use planning for the dispersed granted land parcels so as to optimize the urban land-use structure.  相似文献   

12.
研究目的:剖析德国巴伐利亚州的城乡协调发展路径,探索可供中国借鉴的经验。研究方法:文献法和比较分析法。研究结果:德国巴伐利亚州通过城乡空间规划体系设计、基础设施建设、财政转移支付、产业结构调整、土地综合整治等逐步实现了城乡公共服务水平均等化及居民生产生活条件等值化。研究结论:在国际金融危机背景下,中国的经济转型和城乡统筹发展需要新的出路,德国巴伐利亚州的城乡协调发展路径可提供有益启示。  相似文献   

13.
研究目的研究广东省<集体建设用地使用权流转管理办法>的实施对城市土地管理的影响.研究方法实地调查法、文献资料法、定性分析法.研究结果从城市土地征用、土地规划管理、土地收益等方面探讨了允许集体建设用地使用权流转后对城市土地管理的影响.研究结论建议严控征地范围,盘活城市存量土地,对经营性项目用地通过市场运作方式取得;推行土地征用年租制,积极探索发行土地债券和城市基础设施建设债券;政府对流转的集体建设用地用途进行有效监督和管理;全面推进和加快农村集体建设用地的产权产籍管理.  相似文献   

14.
张掖市城乡建设用地布局优化研究   总被引:3,自引:0,他引:3  
随着社会生产力的发展,土地利用类型结构和布局趋向复杂化;以张掖市为研究对象,在充分调查张掖市城乡建设用地现状的基础上,从数量、布局等方面分析了城乡建设用地存在的问题,通过对用地规模的预测,提出相应的优化城乡建设用地结构和布局的措施与建议。  相似文献   

15.
不同空间尺度下城市土地利用绩效评价指标体系的构建   总被引:1,自引:0,他引:1  
指标选择是评价土地利用绩效的基础,目前许多学者从不同角度建立了土地利用绩效评价指标体系,为土地利用评价奠定了理论基础,然而构建土地利用绩效评价指标体系仍是学术界的重要任务。已有的一些城市土地利用评价指标忽视空间尺度,针对性、层次性、区域性等不明显,因此本文主要针对建成区和市辖区两个空间尺度建立城市土地利用绩效评价指标体系。  相似文献   

16.
Green Belt policies have helped to create chaotic landscapes at the rural–urban interfaces of the United Kingdom's largest cities. Their prime functions, to control urban sprawl and preserve an encircling green girdle to separate the urban from the open countryside, have created ‘edgelands’ that have been remarkably dynamic despite relatively strong controls on certain types of development. A detailed case study of one part of London's Metropolitan Green Belt, drawing upon analysis of planning registers, reveals long-term trends in land-use change linked to the development controls operated within the context of the Green Belt and the adjacent built-up area. This paper also outlines the history of the Green Belt policy in the United Kingdom (UK) and discusses recently proposed policy changes that have provoked ongoing debate about this form of control on urban sprawl and its consequences for the land use of Green Belts and the edgelands.  相似文献   

17.
研究目的:构建半城市化地区土地适宜性评价指标体系,促进农村与城市间过渡性区域的土地资源可持续利用。研究方法:将厦门市集美行政区域划分为农用地、建设用地和生态用地三种土地利用类型,选择合适的评价指标,基于遥感、地理信息系统、层次分析法、专家评分法等手段对每种土地利用类型的适宜性进行评价。研究结果:集美区适宜作为农用地、建设用地和生态用地的土地面积分别占总面积的11.7%、15.4%和1.6%,与当地土地利用实际比较吻合。研究结论:构建的土地适宜性指标体系和评价步骤可用于其他半城市化地区。  相似文献   

18.
各类规划拥有自身理念和功能,在"多规并存"的现实需求下,"用地"协调成为各类"空间规划"协调的关键。运用文献研究法、比较分析法、归纳总结法,探索了"用地"类型、"用地"规模、"用地"布局以及规划年期等在"空间规划"协调中的现实途径。结果表明:"用地"类型要做到宏观上有统一、微观上有特色,一、二级地类强调一致,三级地类彰显特色;各类用地规模,尤其是农业用地和未利用地规模,应在区域规划宏观指导下由土地利用规划总体上统筹,用地规模管控做到"纵向到底、横向到边";用地布局做到各类规划合理分工,土地利用规划实行"刚性"与"弹性"相结合的土地利用分区,城市规划依据城镇用地和农村居民点用地合理确定每个城、镇、村的布局;同时保持各类规划的基期、近期和远期年份应至少有一个保持一致。  相似文献   

19.
The significant proportion of often abandoned marginal/enclosed agricultural land in city peripheries has given rise to the need for studying the delicate relationship between built-up areas and rural land. These issues are exacerbated where metropolitan settlement has no bounds and begins to invade the rural space juxtaposed between cities and urban areas.This marginal land, in particular where a minimum of agricultural activity persists, could provide support to urban activities for recreation, farm services and local production of goods, reducing energy consumption, greenhouse-gas emissions, global warming and packaging, conserving biodiversity. These actions will allow the composting and the reuse of treated waste waters for irrigation.In particular, urban agriculture can play an educational role by contributing to reducing crime and improving community/ethnic relations, encouraging time spent in the open air and ensuring food safety.This study describes a methodology related to the analysis, to the identification, of the residual agricultural areas, differentiating them in accordance with the various levels of rurality to indicate the models of use, which allow to enhance the local landscape situations (preservation of the agricultural function or insertion of integrated activities) obtaining the pertinent valorisation. This methodology has been applied to the metropolitan area in the North zone of Catania.The method has three distinct phases: (1) land analysis and GIS construction consists of acquiring and georeferencing cartographic data, field studies to check and update the maps, and carry out a questionnaire on farm data; (2) data processing with GIS to create some thematic maps; (3) proposal of suitable land-use models.  相似文献   

20.
浙江省1996 — 2005年土地利用变化分析   总被引:6,自引:1,他引:5       下载免费PDF全文
研究目的:依据浙江省土地概查、土地详查、土地变更调查、土地更新调查成果,分析不同时段土地利用状况,构建浙江省1996 — 2005年“土地利用转移矩阵”,分析各种地类变化情况,为土地利用总体规划修编和实施“以图管地”新机制提供决策依据。研究方法:文献分析法,实证分析法。研究结论:1996 — 2005年,浙江省农业结构调整、生态退耕、农田基础设施建设累计占耕地减少面积的59.39%,城乡居民点及独立工矿、交通、水利等建设占用耕地占37.65%。浙江省优质耕地与快速城市化区域在空间分布上高度重合,必须科学地编制与实施省、市、县、乡4级土地利用总体规划,协调保护耕地与保障城乡建设用地需求间的关系,调控土地利用方向。  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号