Study on the Spatial Distribution of Resource-based Urban Land Based on Suitability Evaluation——A Case Study of Datong City in Shanxi Province

[ Objective] The study aimed at analyzing the spatial distribution of urban land based on the suitability evaluation of construction land in a resource-based city. [Methed] Firstly, the suitability of construction land in the center of Datong City was assessed; afterwards, according to the urban scale and spatial expansion mode in target years in the General Land Use Planning for Datong City （2006 -2020）, the spatial layout of new- ly-increased urban land and flexible construction land was carried out to determine the development boundary of Datong City in 2020. [ Result] In the evaluation area of Datong City, the most suitable construction land had an area of only 66.18 hm2, accounting for 10.40% of total area of evalu- ation region; the area of more suitable construction land was 117.51 hm2 and make up 18.47% of total area; moderately suitable land covered an area of 149.49 hm2, which took up 23.49% of total area; the area of unsuitable construction land （89.31 hm2 ） only made up 14.04% of total area. In the newly-increased urban construction land, the area of the most suitable and more suitable land accounted for 73.58%, while there was no un- suitable land. Meanwhile, in flexible construction land, the area of the most suitable and more suitable land made up 66.85%. In a word, the spa- tial layout of urban land was reasonable in Datong City. [Conclusion] The research could provide theoretical references for the spatial expansion and layout of urban land.

Spatial Analysis of Pollution-free Land for Tea Plantation and Comprehensive Evaluation of Soil Suitability

To survey the tea resource advantages in Guizhou's mountainous areas and complete rational layout of pollution-free tea planting areas, we take the case of Guiding County in Guizhou Province to establish the comprehensive evaluation indicator system of pollution-free land for tea plantation and comprehensive evaluation model of soil suitability of land for tea plantation according to the Environmental Conditions Standard for Pollution-free Food-Tea Producing Areas by the Ministry of Agriculture (NY 5020-2001), using land use data, remote sensing data, soil data, temperature, precipitation, light, DEM and other critical basic data, combined with the spatial analysis statistical method. The results show that the area of land suitable for planting tea is 1265 km2, accounting for 77.57% of the entire study area; the area of land with soil quality, climatic conditions and terrain conditions to meet the planting standard of pollution-free tea is 1232.51 km2, accounting for 75.57% of the total land area; the area of land most suitable for the planting of pollution-free tea is 128.71 km2, accounting for 7.89% of the total land area. The above studies can provide scientific basis and decision support for the implementation of tea planting industry standards in the specific areas, and provide reference for the comprehensive assessment of tea planting in other areas.

Land development suitability analysis for transport planning evaluation and optimization in mountainous ecological region

Transportation planning is a critical component for creating an orderly,intensive,and sustainable pattern of land development.By comprehensively considering the potential and suitability of transport construction,a comprehensive method combining resources and environmental carrying capacity(RECC)and land development suitability(LDS)was developed by using techniques of GIS,analytic hierarchy process(AHP)and threedimensional magic cube.Taking Aba prefecture in Sichuan Province of Southwest China as a case study,LDS for transportation was analyzed from three aspects,including overall planning layout,different transport modes,and transportation projects.The results showed that the transport planning scales of most counties in Aba were suitable,and the order of LDS of different transport modes was railway>highway=superhighway>tourism track,which already included 42 new transportation projects.We found that two counties(Maoxian County and Jiuzhaigou County)should improve the ecological protection level of transportation,in which the railway network construction should be encouraged,and some transportation projects with low LDS should be postponed or constructed harmlessly.We suggest the combination of RECC and LDS for transportation could enhance the territorial space optimization and sustainable transport construction.

Database Management System Construction for the Evaluation Results of Intensive Land Use in the Development Areas of Hunan Province

Using spatial data integration and database technology,analyzing and integrating the assessment results in all the development zones at different time in Hunan Province,the paper is intended to construct the database and managerial system for the assessment results of land use intensity in development zones,thus formulating"one map"of Hunan Development zones and realizing the integrated management and application of the assessment results in all the development zones at any time of Hunan above the provincial level.It has been proved that the system has good application effect and promising development in land management for land management departments and development zones.

The theory and method research on the double evaluation of land and space:A survey

By reviewing the theories and methods of resource and environmental carrying capacity evaluation and suitability evaluation of land and space development,it provides theoretical and technical support for rational layout and optimization of land and space development pattern.From the aspects of resource carrying capacity,environmental carrying capacity,the importance of ecological protection,the suitability of agricultural production,and the suitability of urban construction,we sort out domestic and foreign documents.The evaluation of resource carrying capacity has changed from single-factor evaluation to multi-factor comprehensive evaluation.At present,the optimization of land use pattern based on the“three-generation”space is still under exploration,it is not enough to systematize and summarize the thought of optimizing the spatial pattern of the national territory.The theoretical framework,model,method and index of“dual evaluation”of territorial space need to be improved continuously,it also needs the scientific analysis and cognition from the natural direction to the human location direction and the spatial equilibrium state as the new driving force.

Urban Development Boundary Simulation Based on“Double Evaluation”and FLUS Model

The delimitation of urban development boundaries plays an important role in optimizing the nation land space.“Double evaluation”is one of the important means to study and predict the scale of new construction land in the future and to determine the spatial distribution of urban construction land.This study combines the“double evaluation”with the FLUS(Future Land-Use Simulation)model to study the delimitation of the urban development boundary of Yichang.The results show that:(1)the“double evaluation”method comprehensively considers the carrying capacity of the resource environmental bear and the suitability of urban development;(2)the FLUS model can better couple the“double evaluation”method for Land Use/Land Cover(LULC)suitability evaluation,Land Use/land Cover Change(LUCC)simulation and urban development boundary delineation,and the overall accuracy of the simulation reaches 96%;(3)according to the requirements of relevant national policies,this study divides the urban development boundary of the study area into concentrated construction areas,elastic development areas and special purpose areas.This function-based division can meet the requirements of urban flexible development,ecological protection and urban safety.This research combines the FLUS model,which is widely used in the simulation of LUCC,with the double evaluation method used in China’s new round of land and space planning to obtain the result of the urban development boundary.This result is consistent with the existing plan of the study area.

基于GIS的泸西县农业用地适宜性评价分析

通过GIS的空间分析以及主成份分析,对泸西县农业用地适宜性进行评价与分析。确定了该县农用地适宜性评价的参评因子及其影响度(隶属度),建立了适宜性评价指标与分类体系,划分农业用地适宜性等级,编绘农业适宜性等级图,为科学规划、合理利用、有效保护土地资源,促进可持续发展提供依据。

基于GIS轻量开发技术的农用地宜耕性智能化评价应用的探讨

该文基于GIS轻量开发技术的农用地宜耕性智能化评价,回顾了其研究背景,提出了新时代农用地宜耕性评价的重要地位。归纳了其研究意义,并从国内和国外两个维度总结了其应用研究现状及发展动态,得出了相关研究结论。此外,还从国家发展角度出发,探讨了GIS轻量开发技术的农用地宜耕性智能化评价的应用前景。

耕地后备资源研究进展与趋势——基于CiteSpace文献计量分析

耕地后备资源开发是实行耕地保护和耕地占补平衡的重要保障之一。本文利用CiteSpace软件系统分析耕地后备资源研究领域的现状与脉络,明晰未来发展趋势。结果表明,耕地后备资源研究聚焦于农业资源保护开发与土地规划利用研究,小范围内学术合作联系紧密,跨区域合作交流较少。“适宜性评价”“土地开发”和“占补平衡”等为主要研究热点。研究发展历程分为萌芽探索、波动发展和平稳成熟3个阶段。土地潜力评价与开发保护研究贯穿发展历程,前沿发展主要集中在全域土地综合整治,加强土地改造利用技术研究,坚持生态可持续与高质量发展等方面。未来研究应加强边际土地潜力挖掘,深化开发评价、理论体系构建,强化地理信息技术应用与生态修复技术研究,积极探索通过土地整治实现国土空间治理与粮食安全的有效途径。

资源环境承载能力评价综述及研究进展

资源环境承载能力评价是解决资源环境问题和人地关系矛盾、实现可持续发展的重要基础,同时也是国土空间规划的一项基础性工作,是资源科学、环境科学、地理学、生态学和城乡规划学关注的热点和前沿领域。在梳理资源环境承载能力相关研究成果的基础上,总结了当前资源环境承载能力评价研究的进展和存在的问题,并提出资源环境承载能力评价研究的新方向,以期为形成更加理性、科学、实用和具有可操作性的资源环境承载能力评价理论、方法和研究成果提供参考,更好地服务于新时代国土空间规划工作。

生态地质安全视角下的益阳市中心城区国土空间格局优化研究

生态地质环境评价是营造生态地质安全的重要工作内容。城市的发展与生态地质环境承载力有密切的关系,并且,生态地质环境承载力可以补充和支撑“双评价”内容,同时能为国土空间格局优化提供一定的科学指导和依据。本文以益阳市中心城区为研究对象,从生态、地质、社会3个层面,构建了一套益阳市生态地质环境承载力评价指标体系,并通过GIS平台进行综合评价与分析。基于研究范围内不同区域的生态地质环境承载力的优、良、中、差,结合实际情况,确定了市域空间的主导功能分区,并划分了6类土地利用综合区:经济优化发展区(34.27 km^(2))、综合发展区(22.97 km^(2))、经济承接发展区(43.01 km^(2))、工业主产区(25 km^(2))、生态重点保护区(24.12 km^(2))和生态限制发展区(558.12 km^(2))。

佳木斯市国土空间开发“双评价”不适宜结果优化利用方案探讨

资源环境承载能力和国土空间开发适宜性评价科学直观地描述了评价区域范围内的自然资源可利用开发程度,在生态保护、农业生产和城镇建设等多个维度为人类活动提供最大限度保护开发利用的理论依据,是国土空间规划方案编制工作的重要基础。本文以佳木斯市为评价单元开展“双评价”工作,分析总结市域内生态保护极重要区域及农业生产、城镇建设不适宜区域评价结果形成的主要原因,并结合现状提出优化利用的设计方案。

耕地用途管制制度下的济南市耕地后备资源开发利用潜力研究

本文以济南市为研究对象,运用极限条件法初判济南市耕地后备资源宜耕性并划分潜力类型区,在此基础上,采用多因素综合评价方法测算宜耕后备资源的开发复耕难易程度并划分难易程度等级。结果表明:济南市各区县宜耕未利用地分布差异较大,从潜力类型区分布来看,丰富区和较丰富区主要分布在中南部山地丘陵区和南部沿黄区域,较匮乏区主要分布在北部平原区和南部山区,资源匮乏区主要为中部主城区附近。济南市易开发后备资源主要分布在中南部山地丘陵区。该研究可为济南市不同地域后备资源开发时序安排,科学编制耕地占补平衡和进出平衡方案提供参考。

基于生态优先的干旱区县域国土空间开发适宜性评价——以新疆叶城县为例

以新疆维吾尔自治区叶城县为例,将国土空间开发模拟为生态保护和国土开发两个过程,运用最小累积阻力模型和空间分析方法构建叶城县国土空间开发适宜性评价体系。结果表明,叶城县国土开发适宜区总面积为27 359.86 km2,生态保护适宜区总面积为968.84 km2,整体呈中心发散、带状分布的格局,并将叶城县域划定为生态保护区(占比81.79%)、保护开发区(占比14.79%)、开发保护区(占比2.78%)和开发建设区(占比0.64%)。运用最小累积阻力模型进行国土空间开发适宜性评价可更贴近干旱区县域客观实情。干旱区生态环境脆弱,国土空间开发工作对生态环境影响大,应持续推进生态文明建设工作,提高国土空间开发质量,落实耕地保护并进行土地改良,加强区域生态环境保护和修复,不断优化开发格局,推动适宜性评价、适宜区功能与规划建设相适应。

Development vs.conservation in limited urban sprawl:An integrated framework for resolving the urban boundary dilemma in China

The strategic delineation of the urban development boundary(UDB)is an effective initiative for efficient land resource allocation and for facilitating planned urban development.To align with sustainable development objectives,UDB definitions have evolved to reconcile urban development with ecological preservation.This study presents a UDB delineation framework from an integrated perspective that incorporates both demand-oriented and comprehensive constraints.Specifically,the urban construction land demand area was estimated based on population projections,meanwhile,the ecological red line(ERL)was delineated and integrated into the evaluation of the construction land suitability.Subsequently,with the demand area as the simulation target and unsuitable areas as comprehensive constraints,the UDB was delineated by simulating future land use patterns.The proposed framework was applied to Wuhan,a rapidly urbanizing city in central China,where the delineation of the UDB serves the dual purpose of managing the rapid expansion of built-up land and achieving a harmonious balance between urban development imperatives and ecological protection goals.Moreover,based on the results and analysis,policy implications for the rational spatial planning of Wuhan were proposed,encompassing the spatial patterns and scientific decision-making in ecological conservation and urban development.The results demonstrate that the efficacy of adopting a comprehensive perspective in delineating UDB effectively reconciles the competing needs of urban development and conservation.The framework and the policy insights derived in this study could inform spatial planning efforts not only in Wuhan but also in other cities facing the dilemma of urban development and ecological protection.

城镇建设用地适宜性评价及其开发边界格局优化研究

城镇建设用地适宜性评价是城镇开发边界划定的基础性工作,研究如何运用评价结果划定城镇开发边界尤为重要。以典型快速城镇化发展区域天长市为例,甄别确定地形起伏、距建制镇距离、植被覆盖率等9个基础指标因子,通过构建评价指标体系及“潜力—约束”模型对城镇建设用地适宜性开展评价,在此基础上进一步预测研究区城镇建设用地规模并对其开发边界格局进行空间格局优化。结果表明:(1)研究区城镇建设用地适宜性总体处于较高水平,以适宜区和较适宜区为主,占比高达三分之二,空间上呈现以市区为中心向西、西北、东南方向延伸的格局。(2)天长街道、石梁镇和永丰镇三镇潜在城镇建设用地面积居全市前列,未来是城镇扩张主要方向。(3)底线约束型方案城镇建设用地规模为85.88 km^(2),管控发展型方案为103.06 km^(2),积极拓展型方案为120.32 km^(2)。基于城镇建设用地适宜性评价结果开展未来城镇建设用地规模预测及开发边界优化,能够引导城镇建设用地科学合理布局,为区域国土空间规划“三区三线”工作提供理论探索及技术支撑。

乡村振兴背景下的村庄分类方法研究

为科学地对村庄进行分类,指导乡村规划编制有效落实,本文根据新村庄分类规范要求,探讨了村庄分类的技术路线,从用地适宜性评价和村庄发展潜力评价两方面出发,构建了一套村庄评价指标和评价方法分析模型,实现了村庄的有效分类。实践证明,利用该模型可对面向新时期乡村振兴战略下的县域乡村地区村庄类型进行合理、有效划分,助力村庄转型与振兴。

北京市耕地后备资源开发适宜性评价

根据北京市自然、社会、经济资料及图件资料,在考虑各种影响耕地后备资源开发因素的基础上,结合GIS的空间分析功能,分别从自然适宜性和生态安全性角度构建了北京市耕地后备资源开发评价体系,通过对评价要素的空间叠加、计算,评价北京市耕地后备资源在不同条件下适宜性开发的面积和空间分布情况,并从经济可行性方面探讨北京市耕地后备资源开发的适宜性。结果表明:从自然适宜性评价上来看,北京市耕地后备资源能够开发的面积为11675.25hm2,考虑生态安全因素后,适宜开发且不引起生态退化的耕地后备资源面积为11221.14hm2,如纳入经济可行性因素,北京市耕地后备资源全部不适宜开发。综合指数法与限制条件相结合的评价方法能够有效提高评价结果的合理性,评价结果可为北京市土地开发整理政策的制定提供理论参考依据。

山东省土地适宜性空间分析及其优化配置研究

基于山东省自然、社会、经济统计资料及图形资料,运用GIS地理空间分析方法,对山东省土地适宜性进行评价,同时对区域土地资源自然质量指数、土地资源综合适宜度、相对适宜度进行研究。通过对适宜评价图和利用现状图的空间叠加,计算、分析了待调整土地资源的多度及重要值。以土地资源空间分析为基础,多度、重要值为依据,进行土地资源空间优化配置。结果表明,优化后农用地减少10994.82hm2,林牧用地增加13083.56hm2,未利用地减少1438.83hm2。

耕地适宜性评价及其在新增其他用地配置中的应用

针对城市边缘带建设用地快速增长与农用地大量减少的矛盾,构建了土地自然生产潜力评价系统和土地发展压力评价系统两大部分组成的土地适宜性评价方法体系,并以北京市平谷区王辛庄镇为例,评价了城市边缘带土地的自然生产潜力和发展压力,划分了9大耕地适宜性分区,探讨其评价结果在新增建设用地时空配置中的应用途径和方法。结果表明:王辛庄镇60%以上的土地都具有较强的耕地适宜性,约50%的土地都承载着较大的发展压力,不同的规划目标导向下具有不同的新增建设用地配置时空顺序。该适宜性评价方法为城市边缘带新增建设用地的配置提供了明晰的数据基础。