How do centrality,population growth and urban sprawl impact farmland conversion in Norway?

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.     

征收和出让土地中政府干预对土地配置效率影响的定量研究

研究目的:定量评价征收和出让土地中的政府干预对土地资源从农业用地转为城市建设用地的配置效率的影响。研究方法:建立包含征收、一级出让和二级转让的多市场均衡模型,并进行实证研究。研究结果:1999—2005年征收和出让土地中的政府干预造成江西省鹰潭市农地资源被城市建设用地过度占用达183.48 hm2,占总非农化面积的33.73%。研究结论:征收和出让土地中的政府干预造成农地过度非农化,致使农村和城市土地利用效率的降低。     

农地发展权流出、资本回流与区域经济增长*——基于重庆市的实证研究

[目的]以重庆市为研究区域,以农地发展权资本化的地票指标为研究对象,从理论和实证层面探讨农地发展权交易与资本要素的城乡互动关系及其对区域经济增长的影响,为进一步优化农地发展权交易政策、促进区域均衡发展提供相关建议。[方法]基于2008—2017年城乡统筹改革试验区重庆市地票指标交易的面板数据,运用要素禀赋理论和差分GMM模型从理论和实证层面分析农地发展权流出区土地与资本要素的互动关系及其对区域经济增长的影响。[结果]基于区域间资源禀赋的差异及要素相对价格的分化,在市场机制作用下,农地发展权指标将以配置效率优化为导向在不同区域间自由流动。[结论]短期内,由于资本约束,流出农地发展权的区域其经济增长会受到抑制;而当农地发展权指标资本化后,流出区获得了较为稀缺的货币资本,农地发展权流出将显著促进地方经济增长;同时,在研究时期内,由于农地发展权市场交易机制的构建,重庆市地方经济增长存在显著的收敛效应,区域间经济发展差距将会逐步缩小。     

对构建中国城乡统一的土地市场的思考

建立城乡统一和公开竞争的土地市场,是完善城乡土地统一管理的核心。只有建立城乡统一的土地市场,才能发挥市场对土地资源配置的基础性作用,才能在征地过程中彻底消除集体土地和国有土地的产权歧视,从而从根本上阻止征地冲突。构建我国城乡统一的土地市场应分三步走。第一步,解决城乡统一的土地市场的市场主体问题;第二步,在农村集体土地产权清晰的基础上,推进农村集体建设用地使用权出让市场,农村集体农地承包经营权流转市场和农村集体土地所有权的建设;第三步,农村集体土地和城市国有土地在同权下自由竞争、平等交易,达到自然融合。     

Community-based rural residential land consolidation and allocation can help to revitalize hollowed villages in traditional agricultural areas of China: Evidence from Dancheng County,Henan Province

The accelerated rural hollowing driven by vast and increasing out-migration of rural labors under urban–rural dual-track system has imposed huge obstacles on improving land use efficiency and coordinating urban–rural development in China. Taking Dancheng County in Henan Province as an example, this paper analyzes the status quo of rural hollowing and discusses two typical rural residential land consolidation and allocation (RRLCA) practices in traditional agricultural areas (TAAs) of China. The results show that, Dancheng experienced rapid rural hollowing characterized as the hollowing of rural industries, infrastructure, and residential population and settlements. However, Dancheng has considerable potential and the necessity of RRLCA, for the model-based estimation shows that the potential of increasing farmland by carrying out RRLCA was about 5649 ha. The two community-based RRLCA practices show positive effects on the improvement of local living conditions, increment of farmland area and development of rural industries. Their experiences, including self-organized rural planning, democratic decision-making, and endogenous institutional innovation may benefit future RRLCA. Overall, it indicates that promoting community-based RRLCA scientifically according to local conditions could provide an integrated platform for increasing farmland area, developing modern agriculture, promoting new countryside construction, and thus revitalize hollowed villages. On considering the limitations and obstacles of current initiatives, suggestions for future RRLCA in rural China have been put forward.     

美国农地保护方法及其借鉴

研究目的：探讨美国农地保护方法及其对中国的借鉴。研究方法：逻辑分析,对比分析。研究结果：中国现行农地保护政策存在不足。美国农地保护的启示：（1）农地保护目标应包括保证粮食安全、农业产业发展、环境、城乡土地的合理利用,实现数量、质量、生态的综合保护;（2）发挥中央政府、地方政府、农地保护组织和农民的主体作用,促进农地的保护和保持;（3）完善法规调控体系,改革政府参与方式,减少土地套利,完善市场配套设施、引入市场激励机制,根据地区资源和经济发展情况实行差异化方法。研究结论：美国农地保护目标、管理体系及具体方法等对中国有借鉴作用。     

农地确权、差序格局与新型城镇化

农地流转的差序格局化特征会怎样影响我国新型城镇化进程?本文以农地制度改革为着眼点,利用2015年CHFS微观数据,将农地确权、农地流转差序格局与新型城镇化三者置于同一框架下进行系统性分析。研究发现,农地确权与农地流转的亲缘化特征显著促进农业转移人口城镇化。进一步检验作用机制发现,二者在促进农业转移人口城镇化作用方面并行不悖,农村内部整合型社会资本能够弥补正式制度不足带来的农地产权风险。因此,本文认为应着力提升农地确权政策的执行效果,在构建起高效、合理、规范的农地流转制度的同时,促进农户间相互合作,加大力度培育以农户为主体的新型农业经营项目,平稳推进新型城镇化,实现城乡融合发展。     

农村大学生农转非土地流转潜力研究

研究目的:测算农村大学生农转非土地流转潜力。研究方法:明确农村大学生对原土地承包经营权的拥有性,通过收集相关数据资料,建立农村大学生农地流转潜力测算公式,测算出1999—2007年历年流转潜力。研究结果:经测算,自1999年高校扩招到2007年,农村大学生农转非土地流转潜力为371.35万hm2,占全国耕地面积的3.05%。研究结论:在现行国家鼓励土地流转、实现规模经营的大政方针下,通过明确农村大学生土地承包经营权,搭建农村大学生土地流转平台和途径,促进大学生就业,实现农村大学生土地承包经营权在市场上自由流转,对于土地资源的优化配置、实现土地的规模化经营具有重要作用。     

县域城乡融合发展与农村土地制度改革：理论逻辑与实现路径

研究目的：探究县域城乡融合发展与农村土地制度改革理论逻辑,为破解城乡发展困境、助力乡村振兴提供参考。研究方法：归纳演绎法与理论分析法。研究结果：城乡融合发展是城与乡在分工协作、生态宜居、要素流动、保障公平、服务均等、收入平衡6个方面的差距持续缩小的过程,具有土地要素流动受阻、人口外流与结构失衡、基层政府财力薄弱的县域问题表征,其关键在于围绕土地要素在城乡之间交换流动这一主线,深化农村土地制度改革。农村土地制度改革具有权益保障、激励约束和资源优化配置价值功能,对县域城乡融合发展具有木桶效应和联动效应。研究结论：推进县域城乡融合发展应围绕产权制度完善,以革新农地“三权分置”制度、宅基地使用制度、农村集体经营性建设用地入市制度补齐农村土地制度短板和完善农村土地市场机制为重点,从政府绩效考核、规划计划引领、财政金融支持、户籍制度保障等方面健全配套政策措施,实现县域城乡要素自由流动、功能深度耦合和权益均等化。     

Deprived land-use intensification in shifting cultivation: the population pressure hypothesis revisited

This article provides a theoretical framework, based on optimal control theory, to analyze farm households' land‐use intensification decisions in forest‐based shifting cultivation (slash‐and‐burn) agroecosystems. The main results from the analysis generally coincide with the “Population Pressure Hypothesis” (PPH) as an important driver of soil degradation due to the so‐called “fallow crisis” or “deprived land‐use intensification” in shifting cultivation. However, the model also shows, from a supply perspective, that such a vicious circle of lower yields and greater forest land clearing may be avoided when the production elasticity of on‐farm labor outweighs the elasticity of substitution between farm labor and soil fertility. Furthermore, using data from shifting cultivating households from Yucatán, Mexico, we calibrate the effect of changes in population density. The numerical analysis suggests that by contrast to better‐off households, when population density increases, poorer shifting cultivating households' optimal labor allocation strategy is to further extensify land use by clearing more forest in the village common property land, or ejido land.     

我国土地资源配置的“双失”问题及对策研究

研究目的:从西方经济学的原理出发,通过对我国土地资源配置中市场失灵和政府失灵问题的分析,寻求在市场和政府的双重作用机制下土地资源高效配置的实现途径。研究方法:文献资料分析法、比较分析法。研究结果:在市场经济条件下,单纯地依靠市场或政府,不可能实现我国土地资源的优化配置,必须将二者结合起来,以规划的宏观调控来弥补和矫正市场失灵的缺陷,但是当前的土地利用规划存在失效的负面影响。研究结论:应该从加强土地利用规划的政府宏观调控与完善土地市场机制两个途径入手,实现土地资源的高效配置。     

Urban proximity,demand for land and land shadow prices in Malawi

We assess the spatial and intertemporal variation in farmland prices using per hectare minimum willingness to accept (WTA) sales and rental (shadow) prices in Malawi. We use three rounds of nationally representative farm household panel data from the Living Standards Measurement Surveys (LSMS), collected in 2010, 2013 and 2016. The sample is split in quintiles based on distance from the nearest major city, building on the land valuation and transaction cost theory, and agrarian political economy perspectives on global and national land transactions. Generally, farmland shadow prices decrease with distance from urban areas. However, farmland shadow sales prices increased more sharply between 2010 and 2013 in rural areas (+100 % vs +30 % in urban proximity). The results indicate that the sharp increase in demand for large-scale land transfers following the sharp increase in energy and food prices also affected rural smallholders’ land valuation, even in remote rural areas of Malawi. Conversely, by 2016 land shadow sales prices were again, like in 2010, about three times as high in areas near urban centres compared to remote rural areas. Even though sales prices declined in remote rural areas from 2013 to 2016, rental prices remained high. Using farm household-level population pressure variable, we show that local population pressure is a driver of farmland shadow prices, indicating land scarcity challenges, growing demand for land, and poorly developed land markets. With increasing land scarcity, land markets are becoming more important and need to be factored in when formulating development policies that aim to improve access to land in both peri-urban and rural areas.     

Implications of land-use change in rural China: A case study of Yucheng,Shandong province

Based on surveys on rural land-use change at village scale in Yucheng City, Shandong province, this paper presents how land-use change takes place in response to inhibitive institutional forces in light of an outmoded land ownership system and unreasonable land use rights administration, and discusses it in the broader social context of industrialization, rural depopulation, a dual-track land market, and land use legislation. Spatial comparison of land use maps interpreted from aerial photographs in different period unveils a decrease in arable land for farming, and an increase in rural settlements, facilities land and unused land. Despite rural depopulation, rural settlements area nearly tripled during 1967–2008. Nearly all newly gained non-agricultural land originated from farmland at the village fringe while formerly facilities land and unused land had been converted to residential use and it was abandoned later. Thus, the destructive farmland conversion from productive use to non-agricultural uses took place at multiple stages. Questionnaire survey of 1650 households in 48 villages in Yucheng City indicated that 41% of the households had multiple dwellings, even though some of them are not occupied or even ruined. This finding may damp the rosy picture of the reportedly slowdown in China's farmland reduction in recent years as these destructive changes are too small to detect from satellite imagery, and it will also provide a practical scientific basis for constituting more strict farmland protection objectives and strategies for China in the near future. In order to hold back the destructive conversion trend from farmland to non-agricultural uses, the authors argue that policy and institution innovation concerning land use and urban–rural development in China needs feature highly in the government's agenda.     

Regional Planning of Wastewater Reuse for Irrigation and River Rehabilitation

Subject to a few agri‐environmental restrictions, municipal wastewater can be utilised for agricultural irrigation and river rehabilitation. This paper develops a single‐year Planning Model for a region in Israel which consists of a city and three potential wastewater consumers. The model incorporates, in one endogenous system, the economic, physical and biological relationships in the water–soil–plant–environment system and its objective is to maximise the regional social welfare. The model determines the optimal crop mix and the optimal allocation of the limited water and land resources among all potential users. Then, different allocation approaches from the concept of transferable utility games are applied to determine a reasonable and fair allocation of the additional net benefits which will be acceptable to all the players. The results support the collaboration among the economic entities and indicate economic and environmental advantages which can serve the decision‐makers.     

土地市场发育与农地非农化——基于省际面板数据的估计与测算

研究目的：验证土地市场发育对农地非农化的作用方向,估算其对农地非农化的作用。研究方法：理论分析与面板数据模型相结合。研究结果：（1）全国土地市场化水平不断提高,90%以上省份处于转型期土地市场经济阶段;（2）土地市场发育与农地非农化之间呈负相关关系;（3）1999 — 2005年,全国因土地市场发育而得到抑制的农地转为建设用地数量为25624.79 hm2,占农地转为建设用地总量的1.76%,土地资源市场化配置对于农地非农化的抑制作用还不高。研究结论：缓解农地保护压力的制度供给和政策调整可从两方面开展：（1）提高拍卖出让方式比例,出让方式由低市场化方式向高市场化方式转变,提高土地市场化水平;（2）加强土地市场法规建设、规范土地市场,促进土地市场健康发展。     

Africa's changing farm size distribution patterns: the rise of medium‐scale farms

This study assesses changes over the past decade in the farm size distributions of Ghana, Kenya, Tanzania, and Zambia, drawing on two or more waves of nationally representative population‐based and/or area‐based surveys. Analysis indicates that much of Sub‐Saharan Africa is experiencing major changes in farm land ownership patterns. Among all farms below 100 hectares in size, the share of land on small‐scale holdings under five hectares has declined except in Kenya. Medium‐scale farms (defined here as farm holdings between 5 and 100 hectares) account for a rising share of total farmland, especially in the 10–100 hectare range where the number of these farms is growing especially rapidly. Medium‐scale farms control roughly 20% of total farmland in Kenya, 32% in Ghana, 39% in Tanzania, and over 50% in Zambia. The numbers of such farms are also growing very rapidly, except in Kenya. We also conducted detailed life history surveys of medium‐scale farmers in each of these four countries and found that the rapid rise of medium‐scale holdings in most cases reflects increased interest in land by urban‐based professionals or influential rural people. About half of these farmers obtained their land later in life, financed by nonfarm income. The rise of medium‐scale farms is affecting the region in diverse ways that are difficult to generalize. Many such farms are a source of dynamism, technical change, and commercialization of African agriculture. However, medium‐scale land acquisitions may exacerbate land scarcity in rural areas and constrain the rate of growth in the number of small‐scale farm holdings. Medium‐scale farmers tend to dominate farm lobby groups and influence agricultural policies and public expenditures to agriculture in their favor. Nationally representative Demographic and Health Survey (DHS) data from six countries (Ghana, Kenya, Malawi, Rwanda, Tanzania, and Zambia) show that urban households own 5–35% of total agricultural land and that this share is rising in all countries where DHS surveys were repeated. This suggests a new and hitherto unrecognized channel by which medium‐scale farmers may be altering the strength and location of agricultural growth and employment multipliers between rural and urban areas. Given current trends, medium‐scale farms are likely to soon become the dominant scale of farming in many African countries.     

劳动力转移、资本深化与农地流转

随着工业化和城镇化的深入,大量农村劳动力外出工作,户均资本投入增加,农业生产趋于资本深化,农地流转市场日渐活跃,过往的研究大多关注劳动力转移对农地流转的影响,少有提及资本深化是否及如何影响农地流转。本文首先建立了相关影响机制并提出研究假说,进而使用CFPS数据进行检验,不仅估算资本深化对农地流转的直接影响,也分析劳动力转移如何通过资本深化间接改变农地流转。研究结果表明,劳动力转移显著地促进了农户农业生产的资本深化进程,资本对劳动力投入进行了替代,同时,资本深化显著提升了种粮大户的农地经营规模。如果将农地流转细分为转入与转出,资本深化促进了转入,但抑制了转出。本研究对于优化农地资源配置,提高农地规模经营水平,促进农业生产提供了新的研究视角。     

Cash crop choice and income dynamics in rural areas: evidence for post‐crisis Indonesia

In this article we investigate the factors affecting levels and growth of incomes in rural Indonesia following the crisis of 1997–1998. In particular, we investigate the relative roles of nonfarm incomes and productivity improvements achieved via changes in crops versus improvements on the same crops on income dynamics. Framing the article in the context of an optimal labor allocation model, relying on unique household panel data from Central Sulawesi, and using advanced panel econometric methods, we find that local innovations related to the adoption and intensification of new cash crop varieties, more specifically the shift from coffee to cocoa production, can explain a substantial part of the observed post‐crisis developments. Causal estimates of the effect of growing cocoa suggest that households were on average able to achieve about 14% higher income levels during the post‐crisis period compared to the planting of other crops, most notably coffee. Also, our results demonstrate the importance of engagement in nonfarm activities for household income growth. Comparative analyses using a nationally representative survey suggest that similar processes are at play in other parts of Indonesia.     

农村集体产权结构开放性的历史演变与未来走向

[目的]改革开放40年来,为适应人口流动性提高、改进资源配置的需要,农村各类集体资产的产权结构发生了较大变化,但变化的方向和程度并不一致。面向未来,为促进乡村振兴,应重构农用地、集体经营性建设用地和集体非土地经营性资产等农村集体产权的权利结构,允许部分权能跨村流转和配置,提高乡村资源配置效率。[方法]在系统梳理文献、借鉴地方实践经验的基础上,阐述了农用地产权结构、集体经营性建设用地产权结构、集体非土地经营性资产产权结构开放性的历史演变与未来走向。[结果]随着农户的逐步分化,应以促进流转集中、扩大经营规模为目标,进一步扩大农用地产权结构的开放性;随着城乡统一的建设用地市场的发展,应以提高配置效率为目标,进一步扩大集体经营性建设用地产权结构的开放性;随着集体经济组织成员收入的多元化,应逐步扩大集体非土地经营性资产产权结构的开放性。[结论]必须在坚持农村集体所有制的前提下,逐步重构农村集体产权的权利结构,让稀缺的农用地不因集体经济组织成员的进城而荒芜,让进村创业和生活的非本集体经济组织成员能够获得必要的土地要素和居住空间,让村庄和集体资产治理结构能够更有效率。     

农地流转对农户土地利用行为及效果影响探究

在农地流转的影响下,农户的土地利用结构、土地投入、土地利用效率发生了改变。通过对现有文献的总结,全面探析农地流转行为对农户土地利用行为及效果的影响,以期阐明国内外学者现有研究的不足及未来的主要研究方向。对文献的梳理得出:农地流转中,"非农化"及"非粮化"倾向明显,且土地流转市场、土地利用比较收益、政府引导是三大主要驱动力;随着农地规模的扩大,单位面积劳动投入减少,劳动产出率提高;农地流转对农地投入及农业生产效率产生何种影响,国内外学者仍存在分歧,这主要是由于现有研究不够系统深入,未考虑土地流转市场、地权稳定性、农户类型、流转方式、流转用途等因素的作用。要充分发挥农地流转对农民收入的促进作用,政府应从完善土地流转市场,提高地权稳定性出发,但如何避免流转农地"非粮化"以确保国家粮食安全仍是一个亟待解决的问题,这也是未来的一个主要研究方向。