作　　者： ; ; ; ; ; ;

机构地区： 华南师范大学地理科学学院

出　　处： 《生态学杂志》 2011年第4期636-642,共7页

摘　　要： 利用1973、1988和2006年3期遥感数据,以归一化植被指数像元二分法为植被覆盖度估算模型计算连江流域不同时期的植被覆盖度,然后运用DEM地形高程数据及回归分析法和相关分析法,分析海拔高度、坡向、坡度与植被覆盖度的关系。结果表明:(1)高程200～1600m、坡向90°～160°和坡度10°～30°范围内,因人类活动干扰较少和温度、水分等条件较好,植被覆盖度高、质量较好。(2)植被覆盖度的空间分布特征主要受高程影响,其次为坡向,与坡度的相关性较小。(3)近33年连江流域植被覆盖度以剧烈增加区和稳定区为主,多分布于林场、自然保护区和人造林区等植被生境优越点。 Based on the 1973,1988,and 2006 remote sensing data,and with the model of pixel dichotomy and normalized vegetation index,the vegetation coverage in the Lianjiang River Basin of China was calculated.In meantime,DEM terrain elevation data and regression and correlation analysis methods were adopted to analyze the relations of vegetation coverage with altitude,aspect,and slope.The results showed that at altitude 200-1600 m,aspect 90°-160°,and slope 10°-30°,the vegetation coverage was high and had good quality,due to few human activities and good water and temperature conditions.The spatial distribution of the vegetation coverage was mainly affected by altitude,lesser by aspect,and least by slope.In recent 33 years,the vegetation coverage in the river basin was mainly centered in the fast increasing and stable vegetation areas,mostly distributing in the forest farm,natural reserve,and plantation areas with good habitat conditions.

关 键 词： 植被覆盖度 高程 坡向 坡度

领　　域： [自动化与计算机技术] [自动化与计算机技术]