摘要
以RS和GIS为技术手段,基于FRAG-STATS软件平台,先后采用标准法和移动窗口法获得红河流域的整体景观格局特征以及空间梯度分布特征,生成了景观指数空间分布图。分析结果表明:整体而言,流域范围内各指数分布很不均衡,暖温性针叶林及暖温性灌丛和灌草丛斑块数多,占景观面积百分比大,最大斑块指数值较大,为该流域的优势景观类型;耕地的破碎化程度最高,这与城市化进程的加快,人类活动对土地的开发与利用有关。就横向和纵向梯度变化而言,两样带上各个景观格局指数呈现不同幅度的上下波动,SHID、LSI、ED和PD 4个指数表现出相似的变化趋势,而AREA_MN、CONTAG和LPI指数则表现出与之相反的变化趋势。
Based on FRAG-STATS software with RS and GIS technology this paper has mapped out the landscape index of Honghe River basin via standard method and moving split-window method, analyzing the landscape structure pattern and spatial gradients. The results showed that overall, each index is very uneven within this basin. The warm needle-leafed and shrub patches of shrubs and grass is dominant pattern and occupies a large amount of the landscape. The maximum parcel index is high so it is the dominant landscape pattern of this basin; The fragmentation index of cultivated land is high which is related with the rapid speed of urbanization process and the utilization of land by human activities. Concerning the changes from both lateral and vertical, on the two transects each index of landscape pattern are in fluctuation, SHID, LST, ED and PD resemble in changing trend, while AREA_MN, CONTAG and LPI are on the contrary.
出处
《安徽农业科学》
CAS
2013年第10期4455-4457,共3页
Journal of Anhui Agricultural Sciences
关键词
红河流域
移动窗口
景观格局
Honghe River basin
Moving window
Landscape pattern
