基于MODIS遥感的江苏省景观格局

SIGHT PATTERN OF JIANGSU PROVINCE BASED ON MODIS REMOTE-SENSING

关键词:  遥感  景观格局  江苏省

Key words:  MODIS

摘要:

景观格局是由自然或人为因素形成的一系列大小、形状各异、排列不同的景观要素共同作用的结果.文章利用2005年3月份MODIS卫星数据,经过一系列处理后得到江苏省景观图,利用决策数分类法将研究区分为5种景观类型:耕地、城镇用地、水体、自然植被、其它用地,选取斑块数、斑块密度、破碎度、斑块分维数、多样性指数,优势度、均匀度、聚集度、分离度等景观指数,从斑块、斑块类型和景观3个层次上对研究区景观格局进行定量分析.结果表明:江苏省景观斑块共57 030万块,总面积为10.18万km2;在5种景观类型中,耕地和城镇用地是主要景观类型,占全省总面积的68.6451%.江苏省景观多样性程度不高,且斑块空间形状较简单.

Abstract:

Sight pattern is an outcome jointly functioned by a series of nature or manmade elements of different sizes，shapes in different ranges．This paper uses NODIS secondary planet data issued in March 2005．and gets sight pattern of Jiangsu Province after a series treatment．It adopts taxonomy of decision making and divides the studied areas into 5 sight types：arable land，township used field，water body,nature vegetation，others；selects 9 sight patter indexes and conducts quantitative analysis on the studied are as sight patter from spot block，type of spot block and sight 3 levels．The results indicate there are 57'030 spot blocks of sight in Jiangsu Province with total areas of 10，184275 million KM2．Among all 5 sight types，arable land and township used field are the major sight types，which accounts for 68．6451％of the total areas of the Province．The diversity degree of sight in Jiangsu Province is not high，and the special shape of its spot block is relatively simple．