地理学报 ›› 2003, Vol. 58 ›› Issue (5): 659-667.doi: 10.11821/xb200305003

• 土地利用 • 上一篇    下一篇

近10年来长江下游土地利用变化及其生态环境效应

李晓文1,2, 方精云1, 朴世龙1   

  1. 1. 北京大学环境学院,北京 100871;
    2. 中国科学院地理科学与资源研究所,北京 100101
  • 收稿日期:2003-01-11 修回日期:2003-05-06 出版日期:2003-09-25 发布日期:2010-09-09
  • 作者简介:李晓文(1968-), 男, 副研究员。主要从事景观生态学、土地利用/土地覆盖等方面研究。E-mail: lixw@igsnrr.cn
  • 基金资助:

    国家重大基础科研发展项目 (G2000046801); 国家自然科学基金项目 (30100020)

Landuse Changes and Its Implication to the Ecological Consequences in Lower Yangtze Region

LI Xiaowen1,2, 1, FANG Jingyun1   

  1. 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
  • Received:2003-01-11 Revised:2003-05-06 Online:2003-09-25 Published:2010-09-09
  • Supported by:

    National Key Basic Research Project, No.G1998040800; National Natural Science Foundation of China, No.30100020

摘要:

基于TM卫星遥感数据,对长江下游地区1988~1998年10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10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, 土地利用变化, 区域生态环境效应

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.

Key words: Yangtze River, landuse, cultivated land loss, regional ecological consequences