Landscape fragmentation analysis of Liaohe River delta wetland
Based on "3S" technology and remote sensing data during different periods in 7 years from 1988 to 2009 in Liaohe delta wetland, this study analyzes the degree of landscape fragmentation of Liaohe delta wetland using 6 indexes including patch density index, fractal dimension, separation, landscape diversity index, landscape dominance index and landscape Shannon diversity index. The results reveals that (1) between 1988 and 2009, Liaohe delta wetland landscape pattern shows a trend of fragmentation; (2) among different types of wetland landscape, the fragmentation of reed swamp is the most significant with a lowest fractal dimension and highest separation degree; (3) the landscape diversity index and landscape Shannon diversity index show a rising trend and landscape dominance index appeared a downward trend. All the studies demonstrate that the Liaohe delta wetland landscape fragmentation has an enhanced trend.
国家科技期刊平台
NSTL
万方数据
维普
