共查询到20条相似文献，搜索用时 171 毫秒
1.
Human beings have had a tremendous impact on natural ecosystems and are now the principal power to change the biosphere.It is logical that we should pay close attention to the interaction between human systems and environ-mental systems.Taking Minqin bsin ,Gansu Province,as a case,this paper focuses on the evolution of regional physic-cal environments and the cultural systems by which people maintain their relationships with those environments.This pa-per presents the conceptural framework for the man-land system.Expecting to accelerate the regional sustainable develop-ment,it also analyses the evolutionary mechanism of regional man-land system.On the basis of reviewing and analyzing the evolution of man-land system in Minqin basin,the paper also brings forward an adujusting mode for the studied area, which consists of three aspects:to build up a concept that economic growth must harmonize with environmental qualityˊs and land productivityˊs improvement;to make a whole planning and management in the drainage area;and to push for-ward the technique of water-saving irrigation and establish water-saving agricultural system. Itˊs meaningful for resource exploitation and sustainable development of Chinese northwestern arid area,which is represented by Minqin basin,by under-standing what great changes the basin has experienced is experiencing at the global background,and studying its time standing what great changes the basin has experienced and is experiencing at the global background,and studying its time order and territorial structure ,the systemˊs character and law of evolution,trend and the regulating ways to improve man-land relationship. 相似文献
2.
3.
YANGZisheng LIANGLuohui LIUYansui HEYimei 《山地科学学报》2004,1(3):250-263
Land use/land cover change (LUCC) is a focus of the research of global environmental changes.The middle and upper reaches of the Yangtze River,which are the most ecologically fragile mountainous area in China as well as one of the areas in China with most notable LUCC, have been on the Chinese Government‘s list of priority areas for ecological restoration. This paper is to reveal the trend of LUCC and the ecological degradation arising from it, and to provide a basis for the future sustainable use of land resources in the region based on a detailed analysis of Yiliang County. Based on the county‘s land use/cover maps in 1960, 1980 and 2000 drawn with the aid of aerial photograph interpretation, field investigation and GIS based spatial-temporal data analysis, LUCC during 1960-2000 period and the ecological degradation arising from it were analyzed. Using the Markv model, the paper brings out a forecast of what the county‘s LUCC would be like if the county‘s current land use continues, as well as the reasons and countermeasures for restoring degraded ecosystems. 相似文献
4.
Food Security of Shifting Cultivation Systems： Case Studies from Luang Prabang and Oudomxay Provinces, Lao PDR 总被引：1，自引：0，他引：1
Linkham Douangsavanh Anan Polthanee Roengsak Katawatin 《山地科学学报》2006,3(1):48-57
Introduction The shifting cultivation system is one of the most important agricultural systems in Luang Prabang and Oudomxay provinces, where many production systems are found in the uplands. The factors, determining the systems, include ethnicity,Journal… 相似文献
5.
Spatio-temporal Characteristics of Residential Land Growth in Hefei of Anhui Province, China 总被引：1，自引：1，他引：0
CHU Jinlong XU Jiangang GAO Shu 《中国地理科学(英文版)》2007,17(2):135-142
We used the maps of urban land-use in 1978, 1991, 1994, 2000 and 2004, and softwares such as ArcGIS, Fragstats to analyze the spatio-temporal process of urban residential space quantitatively. Some methods, such as di- rection analysis and landscape pattern analysis, were employed. The results show that: 1) the residential land grew very rapidly in Hefei from 1978 to 2004, and the increased land was distributed mainly in the central city zone surrounded by a moat; however, after 1994, it was distributed mainly outside the 1th Ring Road; 2) the expansion speeds were very different in different directions: there exists a fastest expansion of residential land in the directions of NE-NNE, SW and SSE, and a slowest one in the directions of E and SEE; 3) the residential land growth went through four stages: slow circular expansion in 1978-1991, 'axes fan wings' expansion in 1991-1994, more rapid circular expansion in 1994-2000 and 'fan-wings' expansion in 2000-2004; 4) the expansion intensity was also different in all directions in the period of 1978 to 1994, and the most was in SW and then NW; and 5) there were more and more residential land area, and the spatial agglomeration was improved increasingly. 相似文献
6.
Regional Differences of China′s Urban Expansion from Late 20th to Early 21st Century Based on Remote Sensing Information 总被引：4，自引：3，他引：1
This study investigated the regional differences of China′s urban land expansion from the late 1980s to the year of 2008, based on the spatio-temporal analysis of CLCD (China′s land cover/land use database) datasets which were mainly produced from remote sensing imagery data. A newly defined urbanization level index (UI), based on urban land area, is proposed to describe Chinese urban expansion process at 1 kilometer, provincial, regional, and na-tional scales, together with the absolute urban expansion index (UEa) and the relative urbanization expansion index (UEr). The results indicate that the percentages of total land area occupied by urban in the late 1980s, 1995, 2000, 2005, and 2008 were approximately 0.25%, 0.32%, 0.33%, 0.43% and 0.52% of China′s total land area, respectively. Between the late 1980s and 2008, the total urban expansion in the mainland of China was 2.645 × 104 km2, resulting in an annual urban expansion area of about 1322.7 km2/yr, with the UEr of 111.9%. This study also finds that there has been an obvious spatial gradient of urbanization ratio running from the east coast to the west inland, and the urbanization gaps among different regions have persisted over the past two decades. The study also reveals obvious temporal varia-tions of the urbanization rates. There was very little urban growth during the period of 1995-2000 due to the governmental policy factors. 相似文献
7.
Spatio-temporal patterns of intra-urban land use change in Beijing, China between 1984 and 2008 总被引：1，自引：1，他引：0
Wenhui Kuang 《中国地理科学(英文版)》2012,22(2):210-220
Urban internal structure is essential information for urban geography researchers and urban planners or managers. This research aims to examine the spatial structure changes of internal urban land use based on the interpreted datasets of 1984 and 2008. Spatio-temporal patterns of internal land use conversion and urban expansion are analyzed, and then dominant driving factors (e.g., social economy, population growth and urban planning) were identified. The results indicate that Beijing′s intra-urban layout has experienced tremendous adjustment from compact to disperse configure, otherwise its function objects have shifted from the major economic and industrial development before the 1990s to the combination with cultural, high-technological and inhabitable city at present. The dominant urban land use transformations include the relocation of industrial lands from core districts to suburban or other provinces, and the accelerating expansion of residential areas and green spaces for supplying the demand of housing and ecological protection. Although Beijing′s urban planning has experienced three major adjustments and improvement since the 1980s, its optimization of urban internal patterns still remains a challenge. 相似文献
8.
张霞 《地球信息科学学报》2004,6(1):113-113
随着我国土地产权制度的建设和不断完善,铁路、公路等线路用地的土地登记工作越来越多,而线路用地不同于常规的土地登记,探讨此类用地的土地登记实践,具有重要的现实意义。本文以金温铁路为例,在对铁路用地具有连续性、整体性及地籍调查界址数据形式多样等特点分析的基础上,应用GIS,通过面向对象的编程实现界址点数据精确上图,建立登记发证的图形数据库,并应用其制图功能和丰富的空间分析与统计分析功能,制定出金华-温州铁路(简称金温铁路)用地发证图件制作的技术流程,完成土地登记制图。 相似文献
9.
SHAO Jing-an HUANG Xue-qin QU Ming WEI Chao-fu XIE De-ti 《中国地理科学(英文版)》2005,15(4):315-324
The old reservoir areas built in 1950s- 1970s left behind many socio-economic problems, because of the administrative backward migration and little migration fund, and all these problems would be tied to land. Based on interviewing with peasant households, combining land use survey and socio-economic statistical index, this paper analyzed land use change and its corresponding driving forces in Linshui reservoir area of Dahonghe Reservoir. Results showed that land use change in the reservoir area was mainly embodied on low-lying land submergence and migration requisition land. The former changed the land use patterns, and the latter mainly reconstructed original land property and made land over-fragmented. Cultivated land per capita was 0.041ha in this area, below the cordon of cultivated land per capita enacted by FAO. Currently, there were still 30.25% of peasant households being short of grain in trimester of one year, and there were 35.27% of people living under the poverty line. The conditions of eco-environmerit in Linshui Reservoir Area were worse, and healthy and sub-healthy eco-environment accounted for less proportion, composed of green belt around the reservoir area and paddy field ecosystem, and economic forest and orchard ecosystem, respectively. The stress of the reservoir project was macroscopic background to analyze the driving factors of land use change, and real underlying diving factor of the land use change in the area was the change of cultural landscape under the stress of reservoir project. The rapid increase of population was the key factor to induce the change of man-land relationship in the reservoir area, the low level of rural economy was the crucial factor to decide how migrants input for production, and the belief of migrants, influencing the land use patterns in a certain extent, was the inducing factor to keep land use stable. The low-lying submergence and infrastructure construction accompanied the reservoir project were leading factors driving land use change in the area, while changes in land use patterns, after the reservoir being built, were the responses of peasant households＇ behaviors to land use change. 相似文献
10.
11.
ZHU Jin-hua 《中国地理科学(英文版)》2001,11(3):278-282
１ＩＮＴＲＯＤＵＣＴＩＯＮＷｉｔｈｔｈｅｒａｐｉｄｄｅｖｅｌｏｐｍｅｎｔａｎｄａｐｐｌｉｃａｔｉｏｎｏｆｎｅｗｔｅｃｈｎｉｑｕｅｓｓｕｃｈａｓｃｏｍｐｕｔｅｒｃａｒｔｏｇｒａｐｈｙｈａｓｅｎｔｅｒｅｄｔｈｅ２１ｓｔｃｅｎｔｕｒｙ′ｓｄｉｇｉｔａｌｐｅｒｉｏｄｆｒｏｍｃｏｍｐｕｔｅｒａｓｓｉｓｔｍａｐｐｉｎｇｉｎｔｈｅ１９７０ｓｔｒａｄｉｔｉｏｎａｌｍａｐｒｅｐｒｅｓｅｎｔａｔｉｏｎｈａｓｔｒａｎｓｆｏｒｍｅｄｆｒｏｍ２Ｄｍｏｎｏｍｅｄｉｕｍｓｔａｔｉｃｉｎｔｏ３Ｄｍｕｌｔｉｍ… 相似文献
12.
REN Chunying ZHANG Bai WANG Zongming SONG Kaishan LIU Dianwei LIU Zhiming 《中国地理科学(英文版)》2007,17(4):333-340
Based on Tupu theory, this paper studied the dynamic changes, conversion modes, expansion intensity and landscape attributes of the saline-alkali lands in Changling County, Zhenlai County and Da'an City of the western Jilin Province in 1980-2000 with the help of GIS. The results show that the saline-alkali land rather sharply increased in Da'an during 1995-2000; the main conversion processes in the three counties were from grassland to saline-alkali land and from saline-alkali land to grassland; and the typical shapes, spatial expansion speed and mode, and landscape attributes of the saline-alkali land were different in the three counties, which were closely related to local topography, predominant wind orientation, water resources distribution, etc. The corresponding spatial expansion mode was marginality in Changling, random in Zhenlai and more kernels in Da'an, respectively. Landscape attributes also responded to the spatial-temporal dynamic changes of the saline-alkali land and the landscape indices of Da'an fluctuated greatly. The frame of this research may provide fundamental reference for landscape analysis and give some suggestions for regional sustainable development. 相似文献
13.
LIU Xi-lin 《中国地理科学(英文版)》2000,10(2):138-143
lINTRODUCTIONDebrisflowisoneofthesixprimarynaturalhaz-ards,whichinfluencesthedevelopmentofnationalso-cietyandeconomyinChina.Itsseverityissecondarytoflood,draught,earthquake,typhoon,butstrongerthanbiologicalhazards.Morethan3ooOodebrisflowcreeksarescatteredihthewholemountainousarea,andes-PeciallyconcentratedinsouthwestofChina.DebrisFlowInformationSystem(DFIS)operatedbytheInsti-tuteofMountainHazardsandEnvironmentoftheChi-neseAcademyofScienceshasalreadyestablishedadatabaseandcataloguec… 相似文献
14.
Guishan Yang 《中国地理科学(英文版)》1995,5(2):104-115
Due to global climate warming and natural and man-made land subsidence etc., relative sea level rise in the coastal plains
of China will exceed 2–3 times over the golbal mean value during the first half part of the 21st century. It will result in
a series of adverse impacts on evolution of natural environment and socioeconomic development of the coastal area. This paper
analyses environmental and resource effects induced by relative sea level rise in China’s coastal areas on the basis of rough
estimate of future relative sea level rise. These effects include inundating tidal flat and wetlands and increase in inundated
risk of coastal habitable land, exacerbating storm surge. coastal erosion, flooding and salt water intrusion hazards, as well
as endangering land, water, tourism and living resources and their utilization. 相似文献
15.
Integrated Indicators-based Gradation of Cultivated Land Quality in Mountainous Region of Southwestern China 总被引：1，自引：0，他引：1
SHAO Jing＇an WEI Chaofu XIE Deti ZHOU Yan 《山地科学学报》2006,3(3):259-270
1 Introduction The gradation of cultivated land is to assess the suitability of cultivated land for agricultural production in terms of natural and economic prop-erties of land (Feng et al. 2004). It can be used to evaluate sustainability of land use and … 相似文献
16.
传统地籍是以二维宗地为基本单元进行管理的,不能真实反应地上、地下的空间土地使用权管理的需要。为了全面提升国土资源管理水平,积极探索地上与地下、大场景真三维空间信息应用的新模式,提高三维GIS的技术水平与应用能力,建设三维地籍系统,真正实现地上、地下的空间土地使用权有效管理,该文以东营市垦利区三维地籍系统为例,结合地籍管理需求,以二维宗地为基础,结合数字地表模型(DSM),形成了三维地籍数据库,开发了适应于三维地籍管理需要的垦利区三维地籍系统,实现了地籍管理的飞跃。 相似文献
17.
土地类型研究在综合自然地理学中具有重要的地位和意义。该研究虽在国内外已取得很多成果以及制图实践,但仍然有3个问题有待解决：（1）如何对土地类型进行系统分级、分几级;（2）如何选择土地类型各级指标要素;（3）如何利用多源数据进行计算机自动跨尺度土地类型制图。针对上述问题,本文基于国家标准地理格网提出一种土地类型指标数据库建设方案,即构建4级标准地理格网模型,以各级格网单元作为指标表达载体,选择土地类型研究普遍采用的地带、地貌、土壤和植被4要素,进行多级标准地理格网指标库建设框架设计。通过设计与分析,指出多级地理格网分类体系有其物质基础,即地球科学各学科都具有多尺度研究特征,各学科所具有的分类体系层次性可用多级格网来表达,尤其是影响土地类型分类分级系统的地貌、土壤、植被3个要素间存在相互作用,决定了三者分类体系分级数目和各级格网单元尺度应一致或相近。因此,本文基于标准格网体系,给出了一个土地类型指标数据库建设框架,以期用于土地类型研究与制图格网数据库平台的构建,为进一步开展土地类型制图实践研究提供新思路。 相似文献
18.
建立科学高效的管理体制和运行机制 ,即建立房地合一管理体制和一体化测绘架构 ,进行现代地籍调查测绘 ,实行必要的地籍测绘保障是现代地籍管理的具体体现。通过现代地籍调查测绘 ,建立信息系统 ,可实现多种管理功能 ,提高城市地籍管理水平 相似文献
19.
Major Function Oriented Zone: New method of spatial regulation for reshaping regional development pattern in China 总被引：5，自引：2，他引：3
Newest planning methods implemented by Chinese government are promoting a coordinated regional development and shaping an orderly spatial structure by applying the regulation of territorial function. This article analyzes the problems of spatial planning and regional strategy caused by the wrongly-set primary goal of economic development; it states that the three-fold objective of competitiveness, sustainability, and welfare fairness shall be the principal for China to implement the spatial regulation in the new era; it discusses about theoretical thoughts and technology framework of conducting the ′Major Function Oriented Zone′ based on their different major functions that each region plays in urbanization and industrialization, ecological constructions, grain productions, and protection of natural and cultural heritages; it introduces the new concept of ′Major Function Oriented Zone′ that include the major functions category, the stereo regional equilibrium mode, the two-level zoning specification, and the territorial development intensity; it offers a zoning scheme that defines development-optimized and development-prioritized zones as regions with massive urbanization and industrialization, development-restricted zones as ecological constructing or grain producing regions, development-prohibited zones as natural and cultural heritage protecting regions; and finally it addresses the main obstacle for implementing ′Major Function Oriented Zone′, which is the institutional arrangement of the supreme goal of high GDP growth rate that is currently being implemented. 相似文献
20.
CAO Kang GUAN Hua 《中国地理科学(英文版)》2007,17(2):127-134
Brownfield redevelopment is a new urban land use strategy to pursue the ideal of sustainable development. It relieves environmental pressure and resolves the glaring contradiction between urban land idleness and urban sprawl. It addresses issues of urban land use and farmland protection in China. This paper compares brownfield with greenfield, and defines brownfield and its redevelopment. It elaborates general and special government policies for this sustainable land use strategy in the context of China. General policies contain two aspects: clarifying brownfield redevelopment's priority in Chinese urban planning and land use and setting a general quantitative redevelopment target. The extent of the government's special policies, which aim at coordinating three factors in the redevelopment process, namely govern- ments, developers and users, are divided into five areas: statistics and categorization, assessment and remediation, fi- nancial supports and tax incentives, environmental and legal liability, and publicity and guidance. The paper concludes the major functions of different levels of Chinese government in the redevelopment process, i.e. making general strategy, formulating legislation, spectifying regulations and technical standards, estimating and categorizing brownfield sites, drawing up brownfield planning, providing information and financial support, guiding developers, publicizing the strategy to the public, and checking reuse results. 相似文献