摘要
以地理信息系统（ＡＲＣ／ＩＮＦＯ）为手段，利用遥感卫星图片（ＴＭ５）及其他相关图件，以地貌、土壤与植被作为景观分类指标，把黄河三角洲的景观分成８大类型，３０个景观类型．在此基础上，以斑块的周长面积比值、相对面积及与其他景观类型之间的空间相关关系作为识别基质的指标，判定黄河三角洲景观的基质是柽柳芦苇潮盐土斜平地景观；根据斑块的周长面积比值识别廊道，并进行定量化研究．采用斑块密度对黄河三角洲景观的破碎化进行分析，发现生态交错带内斑块密度大；
Based on the TM5 satellite images and other relevant maps, e.g., the
landform, soil and vegetation maps by GIS (PC ARC/INFO 3.4D), the landscape of Yellow River
delta was classified into 8 types and 30 subtypes. Accordingly, with the ratio of patch perimeter
to area as well as the relative area and the spatial relations of landscape types as the indexes
of identifying matrix, the landscape of Tamarix chinensis Phragmites communis saline fluvo
aquic soil inclined flat was discriminated as matrix in the landscapes of Yellow River delta. The
corridors were discriminated by statistics of the ratio of patch perimeter to area step by step.
The analyses on landscape fragmentation at Yellow River delta by patch density show that the
patch density was bigger in ecotones, and the landscape fragmentation nearby old river
courses was serious.
出处
《应用生态学报》
CAS
CSCD
1999年第3期321-324,共4页
Chinese Journal of Applied Ecology
基金
国家自然科学基金
关键词
景观结构
斑块密度
基质
廊道
Landscape structure,Patch density,Matrix,Corridor
