| 宣勇,范一大,王兴玲,王志强.西部荒漠典型区LUCC及景观格局时空变化驱动机制研究
——以尉犁县为例[J].干旱地区农业研究,2012,30(2):188~195 |
| 西部荒漠典型区LUCC及景观格局时空变化驱动机制研究
——以尉犁县为例 |
| Spatial-temporal change of landscape pattern and LUCC in the typical desert region of West China——Taking Yuli County as an example |
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| DOI：10.7606/j.issn.1000-7601.2012.02.32 |
| 中文关键词: LUCC 景观格局 驱动机制 尉犁 |
| 英文关键词:LUCC landscape: spatial-temporal change: Yuli County |
| 基金项目:国家自然科学基金项目（41001059） |
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| 中文摘要: |
| 在GIS和遥感技术支持下，利用景观生态学的相关指标，采用1995年和2000年Landsat TM影像为基础数据，对塔里木河流域核心区—尉犁县土地利用/覆盖变化过程进行了定量分析。结果显示：土地利用覆被动态变化是“二增三减”，即耕地、建设用地面积增加，林地、草地、未利用地面积减少。景观分析表明：在人类活动的干扰下，斑块数目增加，景观破碎度上升，景观多样性下降，草地优势度降低，耕地和未利用地优势度增加,研究区生态系统结构趋向简单，功能趋向减弱。驱动力分析表明，研究区的人类活动历史、人口素质、开发方式对土里利用/覆盖变化的发展趋势有决定作用，降水、风速、土壤质地、植被覆盖度等自然因素对其也有一定影响。 |
| 英文摘要: |
| Based on GIS and remote sensing imagines, the changes of land use/coverage and landscape pattern of Yuli County from 1995—2000 were analyzed. The results showed that the areas of farmland and residential land increased obviously while the areas of forest, grassland and unuesd land decreased. The analysis of landscape index showed that due to the disturbance of human activities, landscape fragmentation index increased while land diversity index decreased. The structure and function of ecosystem became increasingly simpler and weaker. The study also found that human activities, such as urbanization, population quality and mode of economic development were dominant factors for these changes, and the natural factors like precipitation, wind speed, soil texture and vegetation coverage are also driving factors. |
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