Analysis on the Application of Quality Classification of Cultivated Land Resources in Municipal Land Space Planning:A Case Study of Chongzuo City

Cultivated land is the most important strategic resource to ensure food security.The newly constructed quality classification system of cultivated land resources considers the cultivated land health index for the first time.How the new classification and grading index system and the quality classification results of cultivated land resources to effectively guide the preparation of municipal land space planning has become a key research direction.This paper expounds the overall design idea for quality classification of cultivated land resources and classification index system.Taking Chongzuo City as an example,through the analysis of the quality classification results of cultivated land resources in the study area,using GIS spatial analysis and factor pairwise comparison method,this paper explores the application ideas and methods of quality classification research results of cultivated land resources in the formulation of cultivated land retention target,the delineation of dominant areas of cultivated land protection,the delineation of three control lines,the comprehensive improvement of land,and ecological restoration zoning in the municipal land space planning.

Exploration and Innovation of Village Planning Compilation Based on the Background of Land Space Planning

Compilation work of land space planning at village level is important point in promoting the strategy of rural revitalization and the key for specific implementation of land space planning.Based on analyzing the existing problems in the planning at village level in China,overall guidelines and specific measures of land space planning compilation at village level are proposed,and some thoughts and suggestions on how to perfect its legal status,considering regional characteristics and valuing landscape design are put forward.

Coordinated development of land multi-function space: An analytical framework for matching the supply of resources and environment with the use of land space for ecological protection, agricultural production and urban construction

Based on the carrying capacity of the resources and the environment,this article defines the connotation of the land multifunctional space(LMFS)from three aspects,ecological protection,agricultural production and urban construction,in the new era of land space planning system.Moreover,a framework is constructed for the coordinated development of the multi-functional oriented space to match the use of land space(ULS)with the supply of resources and environment(SRE).Based on this,the technology and methods of comprehensive evaluation,dominance recognition,and matching relationship division functions of the use of land space(FULS)and functions of the supply of resources and environment(FSRE)are discussed.The advantageous functions of the use of land space(AFULS)and advantageous functions of the supply of resources and environment(AFSRE)are also identified in the study area.A LMFS coordinated development system integrating“function position-comprehensive partition-regulation strategy”is proposed.Through the empirical study of Shandong province,we found that,first,the FULS of ecological protection space in the province is mainly found in high value areas,and the FSRE is mainly in low value areas,which has certain complementarity in the space.The FULS of agricultural production space is mainly observed in high value areas,the FSRE is mainly in middle value areas,and the spatial distribution is balanced and staggered.The FULS of the urban construction space and the FSRE are mainly in middle values areas,and the spatial distribution is basically similar.Second,the FULS in the study area is dominated by the single advantage of agricultural production and urban construction,while the FSRE has a relatively balanced distribution of the advantages of ecological protection,single agricultural production and compound advantages of agricultural production and urban construction,and urban construction and ecological protection.The matching between the two is mainly at high and middle levels.Specifically,70%of the province’s land space still has a certain development and utilization potential,and 30%of ULS intensity is close to or exceeds the resource and environment carrying capacity.Third,considering the comprehensive impact of resource endowment,social and economic development and policy and institutional environment on different matching relationships,this paper constructs the land spatial development strategic pattern of“two screens-seven regions-multicore”positioning and“four regions-eight categories”hierarchical area of Shandong at the macro level,and puts forward a differentiated land space development strategy.

Spatio-temporal pattern changes of land space in Hengduan Mountains during 1990–2015

Hengduan Mountains offer land space for a variety of ecological services. However, the sustainable development and management of land space has been challenged by increased human activities in recent years. This paper performs the spatial pattern analysis of the quantitative and structural changes of various landscapes at different altitudes, and uses the land use data in 1990, 2000, 2010 and 2015 to reveal how various land patterns have changed. The results show that, within the production-living-ecological space schema, the ecological space dominates Hengduan Mountains, while the production and living space was mainly distributed in south region. During 1990-2015, the production-living-ecological spatial changes had been gradually accelerated and the regional differences had become more prominent. The agricultural production space had continuously decreased by 1132.31 km^2, and the industrial and mining production space had rapidly increased by 281.4 km^2 during 1990-2015. The living space had steadily increased, and the ecological space had increased with fluctuations. The land space pattern in Hengduan Mountains was greatly restricted by the terrain, such as altitude and slope. The implementations of China Western Development Strategy and the Returning Farmland to Forest Program had favorably promoted the changes of land spatial pattern in Hengduan Mountains.

RESEARCH ACTIVITIES ON LAND USE/COVER CHANGE IN THE PAST TEN YEARS IN CHINA USING SPACE TECHNOLOGY

Land use/cover change, which in China is characterized by urbanization resulting in a decrease in arable land in the east along with a large area of grassland being cultivated in the west, has been accelerated by rapid economic development in the last years. All of the above changes will affect sustainable development in the next century. The Chinese Academy of Sciences is conducting a study of land use/cover change over the last ten years based on the integration of remote sensing and GIS technology to establish a multitemporal database covering all of China. Fundamental data for land use/cover for the year 1996 has already been developed by the Chinese Academy of Sciences. In order to reconstruct fundamental land use/cover data for the year 1986, a central data processing and analyzing system and a regional data acquisition, processing and analyzing system have been established and are joined together as a network. After the 1986 database is established, the comparative research on the reduction in arable land, urbanization, desertification, changes in forest and grassland, and lake and wetland land use/cover change will be carried out. In addition, a transect for a key regional comparative study was selected along the Changjiang (Yangtze) River. The driving forces of these changes also will be extracted. The result of this study will be not only make a contribution to global land use/cover change research, but will also support decision making for sustainable national development.

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.

Agricultural Land Suitability of Production Space in the Taihang Mountains, China

The contradiction between the shortage of land for agriculture due to rapid expansion of industrialization and urbanization and increasing population pressure is projected to impose great threats to future food security.Agricultural land suitability evaluation is an effective approach to improve the utilization of land resources for crop production and thus enhance the capacity of food provision.In this study, we evaluated the land suitability for agriculture of the production space in the Taihang Mountains by three steps: establishing indicator system, determining weights for indicators, and constructing a fuzzy matter-element model to assess the grades of suitability.Results showed that the land suitability had a significant linear correlation with potential crop yields, indicating our evaluation was effective to predict crop production.The spatial pattern of land suitability for crop production demonstrated that land with higher suitability was generally located in piedmont plains and basins, while land with lower suitability was mostly situated in mountainous areas.The area of highly, moderately, marginally suitable and unsuitable land for agriculture was 32.13%, 28.58%, 37.49% and 1.80% of the production space, respectively.However, the correlation degree analysis indicated that the requirements of these four suitability grades were currently not satisfied but could be potentially fulfilled.In terms of indicator weights, soil properties were much more important than topography and location conditions to influence the grades of suitability.Among all indicators, slope, soil organic matter, soil texture and soil depth were the most influential factors, so slope farming prevention and organic fertilization were most likely to improve land suitability for agriculture.Compared the outputs of our land suitability evaluation model with the distribution of the existing croplands, we found that about 66.52% of marginally suitable and 54.55% of unsuitable land for agriculture were currently used for croplands.Therefore, de-farming policy should be implemented in areas of these two suitability grades.In contrast, cropland expansion was encouraged in the land that was highly or moderately suitable for agriculture.Our evaluation of agricultural land suitability is beneficial for future land use planning and decision-making in the Taihang Mountains.

Planning Strategy of Tourism Service Towns under the Land and Space Planning System:A Case Study of Taiping Town in Nanchang City

In May 2019,the construction of the land and space planning system was officially launched.The Ministry of Natural Resources of the State Council issued the Notice on Comprehensively Implementing Land and Space Planning,which clearly requires all regions to comprehensively launch the land and space planning and puts forward specific work requirements[1].Later,in order to guide the preparation and implementation of land and space planning,various technical standards were successively issued.The dual-assessment technical guidelines,land use classification standards,and the compilation guidelines for provincial,city and county planning were gradually submitted for review and trial implementation.In this context,there have been more and more planning theories and practical studies based on the background of land and space planning.For tourist service towns,how to protect the style and features of the towns under the land and space planning system and preserve the local characteristics is a problem that needs to be solved urgently[2].

The Primal Exploration of Space launch and Manned Lunar-landing

The lunar-landing is the continuity of manned spaceflight engineering. Comparing with the manned spacecraft engineering, it requires more reliability , larger scale, and more funds. On the basis of China’s achievements and the experiences of foreign countries, the paper brings forward the idea that using the existing transportation technology to send the launch vehicles and cosmonauts to the near-earth orbit in batches, assembling the components together on the space-launch platform, and then launching them to the moon to fulfill our dream of manned landing on the moon. The paper also discusses the space launch platform and the launching ways.

基于CiteSpace的城市闲置土地研究:特征与热点演进(1990—2015年)

研究目的:动态分析闲置土地研究基本特征,挖掘闲置土地研究热点演进路径。研究方法:以文献计量学为基础,对Web of Science核心合集数据库收录的闲置土地文献及其参考文献进行可视化分析。研究结果:(1)自20世纪90年代始,闲置土地研究不断涌现,已成为土地利用研究的重要组成部分;(2)闲置土地国际合作研究日益紧密,多学科交叉研究特征凸显;(3)从研究发展历程看,20世纪90年代闲置土地研究兴起时,研究主题为探讨闲置土地的不良社会经济影响;进入21世纪后,闲置土地综合治理成为研究热点;近5年来,生态改造研究主题倍受青睐。研究结论:闲置土地研究热度未来将保持平稳增长态势,生态治理研究将在今后一段时期成为本领域研究热点。

基于GlobeLand 30的耕地资源损失过程研究——以环渤海地区为例

研究目的:认识和理解耕地资源损失过程。研究方法:基于中国成功研制出的世界上首套30 m分辨率2000—2010年GlobeLand 30数据,利用GIS空间分析方法,综合分析环渤海地区耕地资源损失流向、质量和空间特征。研究结果:2000—2010年,环渤海地区土地利用/覆盖变化剧烈,耕地资源明显减少,主要损失流向为人造覆盖、草地、水体和森林;耕地资源损失区域主要位于降水量较少、海拔较高等耕作条件较差的地区;耕地资源重心总体向东南方向移动,破碎化程度日趋严重。研究结论:基于GlobeLand30数据的耕地资源损失过程研究能有效揭示耕地资源损失流向、质量和空间特征,为区域耕地资源利用与保护提供了积极借鉴和参考。

The Comprehensive Functional Zoning of County Land Space:A Case Study of 88 Counties in Guizhou Province,China

Territorial spatial evaluation and zoning management play a pivotal role in territorial spatial planning,which serves as a vital tool for facilitating coordinated regional development.This study focuses on 88 county unitsin Guizhou Province to establish a comprehensive functional zoning evaluation index system for national landspace.The system integrates six aspects of national land space functions:agricultural production,industrial development,human settlement services,tourism services,mineral resource supply,and ecological services.Subsequently,the functional zoning of national land space in Guizhou Province was optimized and adjusted based onthis evaluation.The findings reveal several key insights.First,there is significant variability in the evaluation of individual functions of Guizhou Province’s land space,with industrial development and tourism and leisure functionscomprising the highest proportions at 30.68%.Second,driven by social and economic development,some countiesand regions have undergone functional transformations,transitioning from primary agricultural production areas tokey development zones.Third,except for three counties primarily focused on ecological service functions,all othercounties and regions exhibit multi-cluster and multi-functional development patterns.This study provides decisionsupport for the rational development and utilization of national land space in the karst mountains of Guizhou Province.Furthermore,the methodological approach and findings of this study serve as a valuable reference for thefunctional zoning and optimization of national land space.

“三生空间”视角下贵溪市土地利用转型的生态系统服务价值效应

本文基于贵溪市2010-2018年土地利用现状数据为基础,在“三生空间”视角下,使用土地利用转移矩阵表达了贵溪市土地利用转型过程,并通过生态系统服务贡献值从正负两方面量化土地类型转变造成的生态系统服务价值效应。结果表明,2010-2018年,贵溪市生态用地面积减少,生产和生活用地不断增加,其中林地生态用地减少最多,共计2 330.73 hm^(2),农业生产用地增加最多,面积为1 183.35 hm^(2)。贵溪市生态系统服务价值存在明显差异,整体上是“南北高,中部低”的空间分布。2010-2018年,从生态系统服务价值总体层面,贵溪市呈下降趋势。由于城市化和工业化的快速推进,生活用地和生产用地正在侵占大量生态用地,对生态系统服务价值产生负效应影响。对生态系统服务有正效应影响的主要土地利用转换类型是农业生产用地向各种生态用地的转换,“退耕还林还草”的实施是主要原因。贵溪市生态系统服务价值从2014年开始下降幅度得到缓解,但总体上生态系统服务价值负效应大于正效应。分析2010-2018年贵溪市土地利用转型及其生态系统服务价值效应对贵溪市国土空间规划和“生态文明建设”具有指导意义。

基于Landsat数据的蓝绿空间改善城市热环境分析——以天津市为例

以天津市内六区为研究区域,利用2004年、2011年、2017年间的Landsat卫星遥感影像,综合应用地表温度反演、温度差异分区、土地利用分类解译、景观格局分析等研究方法,探讨城市热环境与蓝绿空间的联系特征。结果表明,2004~2017年城市高温范围区域随着城市建设发展的方向,跨越河流的空间限制不断拓展,而低温范围区域主要集中在蓝绿空间。蓝绿空间具有改善城市热环境的生态作用:在景观格局层面,地表温度与蓝绿空间的斑块周长指数呈显著负相关,与周长面积比指数呈显著正相关;在空间格局层面,地表温度与蓝色空间的斑块所占景观面积比在1500m×1500m尺度样本中相关程度最高,与绿色空间在300m×300m最高,且蓝色空间的热环境改善效率更佳。最终提出面向热环境改善的城市蓝绿空间优化建议,可为生态宜居城市建设提供新思路。

“标准地”改革背景下的地方产业空间挖掘策略研究

经济社会高质量发展的时代背景对产业发展提出新的诉求。土地是保障产业项目落地的基础要素,如何从土地资源中挖掘产业空间潜力,支持产业用地供应改革,是新形势下产业发展面临的直接诉求。文章提出以详细规划“地块”为单元,融合多源管理数据,构建产业空间分类挖潜路径,服务于产业用地“标准地”供应,为“地等项目”产业用地空间要素保障研究提供参考。

基于1990—2019年Landsat影像的干旱区绿洲土地利用变化与模拟

探明西北干旱区典型人工绿洲阿拉尔垦区的土地利用变化及未来发展情况,为类似地区土地利用变化的调控和管理提供参考。将逐年各月份影像进行多时相合成后,运用支持向量机分类方法获得逐年土地利用分类图,从面积变化、类型转化、空间动态变化3方面进行土地利用变化分析,采用CA(cellular automaton)-Markov模型模拟2050和2080年土地利用变化情况,基于累积距平法和通径分析方法探究其突变情况和驱动因素。研究结果表明:1990—2019年,阿拉尔垦区耕地、园地、水体和建设用地的面积呈增加趋势,其中耕地和园地面积的增加主要是由塔里木河沿岸区域之外的未利用地转换而来。至2080年,垦区东北和东南部的未利用地将被逐渐开垦,耕地、园地和建设用地的面积将大幅增加。阿拉尔垦区土地利用类型面积在2005年发生转折性变化,耕地、园地和建设用地的面积急剧增加;垦区土地利用变化的主要驱动因素为总人口、农业生产总值和棉花价格。研究结论:在未来土地开发利用过程中,应当制定可持续发展的耕地开发政策,严格控制建设用地面积,构建合理的土地利用结构。

基于Landsat卫星影像的江淮分水岭土地利用空间特征分析

为了解江淮分水岭区域土地利用特点和空间布局特征,基于Landsat系列卫星2005年、2010年和2017年遥感影像解译数据,结合GIS空间分析技术和计量地理模型,从利用程度、组合类型和区位意义角度对江淮分水岭土地利用状况进行研究。结果表明:江淮分水岭区域以耕地和建设用地为主要地类,各地类数量差异明显;土地利用多样化和集中化处于中等水平;土地利用程度差异明显,地类组合是以耕地为主的2～3个地类的组合;西部多样化水平较高,东部集中化水平较高,西部和西北部区域地类组合类型较为丰富;耕地和建设用地的区位意义相对突出,但建设用地逐渐增强,耕地逐渐下降;研究区内各地类斑块形状相对复杂,但复杂度逐渐降低,耕地和建设用地分布相对集中,草地和未利用地分布较为离散。

中国国土空间用途管制研究的源起、演进、热点与展望——基于CiteSpace的可视化分析

以"土地用途管制"或"国土空间用途管制"等为关键词在中国知网进行主题检索,共获取645篇有效样本文献,并借助CiteSpace软件对样本文献进行了可视化分析,探讨国土空间用途管制的源起、演进、热点与展望。结果表明:①作者和机构合作紧密度有较大提升空间。②样本文献关键词分为5个聚类,分布集中,研究内容整体性强。③相关研究分为前期起步、中期发展和后期过渡阶段,主要集中在制度完善和演进历程等方面。我国目前已实现由单要素管制到全域、全类型国土空间用途管制的转型,亟待构建集国土空间开发许可、用途变更审批、利用监管于一体的制度体系和技术保障体系。

基于Landsat8的绿地格局对地表热环境的影响研究

在快速城市化背景下,城市的热环境问题不断加剧。本文以2017年8月4日和2018年1月27日的厦门岛Landsat 8数据为数据源,提取绿地空间信息并进行地表温度反演。实验结果表明:夏季绿地面积与温度呈现出中等程度负相关,冬季绿地面积与温度保持弱负相关;水体面积与温度在这两个季节里都表现出较强的负相关;聚集度较好的水体在这两个季节均表现出降温作用,绿地对温度的影响不显著。

我国耕地资源保护的发展脉络与趋势--基于CiteSpace的可视化分析

耕地资源的有效保护是我国经济社会稳定发展的重要保障,人地关系的结构性矛盾自然需要将其上升到国家战略层次。本文基于文献计量学,运用CiteSpace软件对1986—2020年有关耕地保护的5715篇核心文献进行图谱分析,旨在对我国耕地保护的相关研究热点及发展趋势进行挖掘与探索。研究表明:①耕地保护领域合作机构网络形成以各大高校为主力的相互交叉合作的网络体系;②主题关键词共产生22个聚类,知识网络整体联系较为紧密,研究视角逐渐丰富;③研究前沿上,研究热点与耕地保护政策走向具有高度相关性的发展,研究技术上走向多元化发展。因此,未来针对不同地区耕地保护的差异化研究仍有进步空间。