|
|||||
|
|
| 近10年来长江下游土地利用变化及其生态环境效应 | |
| 引用本文： | 李晓文,方精云,朴世龙.近10年来长江下游土地利用变化及其生态环境效应[J].地理学报,2003,58(5):659-667. |
| 作者姓名： | 李晓文 方精云 朴世龙 |
| 作者单位： | 1. 北京大学环境学院,北京,100871;中国科学院地理科学与资源研究所,北京,100101 2. 北京大学环境学院,北京,100871 |
| 基金项目： | 国家重大基础科研发展项目(G2000046801)，国家自然科学基金项目~~ |
| 摘 要： | 基于TM卫星遥感数据，对长江下游地区1988～1998年l0年来土地利用类型的数量和时空变化特征进行了研究。为表征长江下游土地利用及其变化的时空分异特征，以县级行政区为基本空间分析单元，利用土地利用程度变化模型以及土地利用类型变化强度指数分析了长江下游近l0年来的土地利用程度及其变化的区域分异特征、各土地利用类型变化强度的区域分异特征；通过计算土地利用变化类型的重要值，分析了区域土地利用变化的空间趋向性。研究中还对农田的数量变化特征、耕地流失强度的区域分异，特别是土地利用变化的区域生态环境效应等问题进行了分析和探讨。 |
| 关 键 词： | 长江下游地区 土地利用 生态环境效应 卫星遥感 |
| 收稿时间： | 2003-01-11 |
| 修稿时间： | 2003年1月11日 |
Landuse Changes and Its Implication to the Ecological Consequences in Lower Yangtze Region |
|
| LI Xiaowen,FANG Jingyun,PIAO Shilong.Landuse Changes and Its Implication to the Ecological Consequences in Lower Yangtze Region[J].Acta Geographica Sinica,2003,58(5):659-667. | |
| Authors: | LI Xiaowen FANG Jingyun PIAO Shilong |
| Institution: | 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China; 2. Department of Urban and Environmental Science, Peking University, Beijing 100871, China |
| Abstract: | Based on the multi-temporal remotely sensed data of TM, this research attempted to reveal the spatio-temporal trends in landuse and landcover in Lower Yangtze Region by depicting and analyzing the process and spatial heterogeneity of landuse landcover changes in the region, especially placing emphasis on the transformation modes and spatial behavior of landuse. In order to achieve the goal, the magnitude and spatial distribution of landuse transformation from the 1988 to the 1998 were analyzed by the transformation matrixes and the spatial layouts of landuse, then changes of landuse degree and associated traits in spatial distribution were targeted by establishing and applying the landuse index. Furthermore, the spatial shifting of landuse transformation intensity was studied by conceiving and using Landuse Transformation Index. As a hot topic, the loss of cultivated land and its driving force were also included in this step, and the top ten significant forms of landuse transformation were analyzed, in particular the trends in spatial transformation according to their Important Value individually. |
| Keywords: | Yangtze River landuse cultivated land loss regional ecological consequences |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《地理学报》浏览原始摘要信息 | |
| 点击此处可从《地理学报》下载免费的PDF全文 | |