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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (13): 396-400.

• 农业科技信息 • 上一篇    下一篇

高艳 毕如田   

  • 收稿日期:2010-01-29 修回日期:2010-04-08 出版日期:2010-07-05 发布日期:2010-07-05
  • 基金资助:

    山西省涑水河流域土地覆盖与生态环境演变过程研究

Effects on Changing Grain Size of Landscape Indices in Sushuihe Watershed

  • Received:2010-01-29 Revised:2010-04-08 Online:2010-07-05 Published:2010-07-05

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摘要：

景观指数是指能够高度浓缩景观格局信息，反应其结构组成和空间配置某些方面特征的简单定量指标。本文以涑水河流域为例，使用2008年该流域的TM影像，应用RS和GIS技术，并借助Fragstats软件在不同尺度上对12种常用景观格局指数进行了分析，结果表明：（1）PD、ED、LSI、SHAPE-MN、FRAC-MN、CONTAG和AI随粒度的增加呈现逐渐减小的趋势；（2）PAFRAC随粒度增加呈现逐渐上升的趋势；（3）LPI、SHDI和SHEI随粒度的增加呈现的变化趋势比较复杂。

关键词: 转基因, 转基因, 香石竹, 农艺性状

Abstract:

Landscape indices are simple quantitative indicators that can highly concentrated the information of landscape pattern, reflect its composition and certain aspects of characteristics of spatial configuration .In this paper, taking sushuihe watershed as an example, using the TM image in 2008 of this watershed, apply RS and GIS technology ,and with the help of Fragstats software we analysis the 12 kinds of usual landscape pattern indices from the different scale. The result shows: (1) PD、ED、LSI、SHAPE-MN、FRAC-MN、CONTAG and AI showed a gradual downward trend With the increasing grain size. (2) PAFRAC showed a gradual upward trend with the increasing grain size. (3) LPI、SHDI and SHEI showed a complicate trend with the increasing grain size.