基于MODIS遥感的江苏省景观格局

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。

SIGHT PATTERN OF JIANGSU PROVINCE BASED ON MODIS REMOTE-SENSING

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 areas 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.