VECTOR ANALYSIS THEORY ON LANDSCAPE PATTERN(VATLP)IN SANJIANG PLAIN MARSH,CHINA
- 出版年：2004
- 作者：ZHANG Shu-Qing； ZHANG Jun-Yan；LI Fang
- 单位1：Northeast Institute of Geography and Agricultural Ecology
- 出生年：1963
- 语种：中文
- 作者关键词：landscape pattern indices；theory of pattern analysis；mechanics；Sanjiang plain marsh；VATLP
- 起始页：161
- 总页数：10
- 经费资助：National Natural Science Foundation of china(Grant No .40371082).
- 刊名：湿地科学
- 是否内版：否
- 刊频：季刊
- 创刊时间：2003
- 主办单位：中国科学院东北地理与农业生态研究所
- 主编：陈宜瑜
- 电子信箱：wetlands@ mail.neigae.ac.cn
- 卷：2
- 期：3
摘要
Landscape indices are popular for the quantification of landscape pattern. But all landscape indices beingused so far are scalar quantity, which measure patterns without consideringsufficiently the pattern size and the direc-tionality together. Based on planar characteristics defined in mechanics such as centroid, moment of inertia,product ofinertia, principal axes and so on, vector analysis theory on landscape pattern (VATLP) is exPloredhere. Firstly we es-tablish a coordinate system of centroidal principal axes (CSCPA) of a patch or patches. Some related new indices in-cludingthose describingthe direction of patterndistribution (patch orientation (PO), vecctoriapatch orientation(VPO)), and those indicating the shape of patch's equivalent ellipse (major axis (MJA), minor axis (MIA) and ec-centric rate (ER)) are deduced.Tese landscape metrics are then applied to the pattern analysis of Sanjiang plainmarsh, the study area. Two temporal vecctor-based data sets of the study area come from interpretation of remote sens-ingimages MSS (1980) and TM (2000). Theaplication of the theory captures some shape properties of riparian wet-land in Sanjiangplain marsh. The dissymmetrktl featires of Sanjiang plain marsh around principal axes due to agricul-tural development could also be explained.