| 水网密集区土地利用/覆被变化及其建设用地适宜性评价——以吴江市芦墟镇为例 |
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| 引用本文： | 张新焕,徐建刚,于兰军.水网密集区土地利用/覆被变化及其建设用地适宜性评价——以吴江市芦墟镇为例[J].资源科学,2006,28(2):61-66. |
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| 作者姓名： | 张新焕 徐建刚 于兰军 |
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| 作者单位： | 南京大学城市与资源学系,南京,210093 |
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| 摘 要： | 本文以吴江市芦墟镇为例，以2000年和2004年SPOT影像中提取出的用地信息为基础，对研究区的土地利用/覆被动态变化与建设用地适宜性进行了定量与定位分析。文章首先介绍了SPOT影像的前期处理与用地信息的提取过程，得到两期土地利用/覆被分类图；然后依据解译的信息对土地利用/覆被的动态变化进行分析，计算研究期内各类用地的增长规模、变化速率与变化强度的变化，并通过GIS中的叠置功能分析出各类用地的转移矩阵，以此解释不同类型用地之间的消长关系；接着剖析了土地利用过程中出现的空间问题，主要表现在空间格局与生态环境受到破坏、镇区空间快速无序的扩张、建设用地过于分散这3个方面；最后对研究区的建设用地适宜性进行了定量与定位评价，分析出建设用地的空间发展潜力较小。
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| 关 键 词： | 水网密集区 土地利用/覆被 适宜性评价 |
| 文章编号： | 1007-7588(2006)02-0061-06 |
| 收稿时间： | 2005-08-17 |
| 修稿时间： | 2005-11-07 |
Land Use and Land Cover Change and the Evaluation of Land Suitabilityfor Construction Use in the Area with Lakes and Rivers: A Case in Luxu Town of Wujiang |
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| ZHANG Xin-huan and XU Jian-gang,YU Lan-jun.Land Use and Land Cover Change and the Evaluation of Land Suitabilityfor Construction Use in the Area with Lakes and Rivers: A Case in Luxu Town of Wujiang[J].Resources Science,2006,28(2):61-66. |
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| Authors: | ZHANG Xin-huan and XU Jian-gang YU Lan-jun |
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| Institution: | The Department of Urban and Resource Science. Nanjing University. Nanfing 210093. China |
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| Abstract: | Based on the land use and land cover information derived from SPOT images,this paper analyzes the dynamic change of land use/cover and evaluates the land suitability for construction use in Luxu town of Wujiang city.The study area is typically featured with rapid economic development and frail water-environment.Therefore,it's necessary to study the land use/cover change in such area in order to provide guidelines for the region's sustainable development.Firstly,the process of image interpretation and land use/cover classification is introduced briefly,and two maps of classification on land use/cover are collected. Secondly,the dynamic land use and land cover change is analyzed according to the information from SPOT image.In the area,town-building land,road and industrial land are increasing obviously,while land occupation by ponds,lakes and river,agriculture land and rural residential land are reduced.For the change speed,the fastest are pond land and town-building land;the second are road industrial land.Besides of the quantitative change on land use/cover,the characteristic of the landscape is more fragmental,especially the agriculture land.Thirdly,some prominent problems are put forward and narrated in detail.The spatial pattern and eco-environment are destroyed in virtue of such two aspects as some waterway in the town are filled blindly for construction use and the buffer zones for flooding prevention are also occupied unreasonably.The town expansion shows rapidness and in-order characteristic in the process of industrial land growth.The building land spatial pattern is dispersed visibly,especially the rural residential land.Finally,the evaluation on building land suitability is illustrated from quantitative and spatial scale.The area of most suitable land for construction is 2167ha,the area of superior suitable land for construction reaches 1406 ha,the area of land less suitable for construction is 1384ha,and the area of land unsuitable for construction is 3403ha.It is concluded that the potential of land supply is lover than the demand for construction use. |
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| Keywords: | The area with lakes and rivers Land use and land cover change Evaluation on suitability |
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