Spatial gradients pattern of landscapes and their relations with environmental factors in Haihe River basin Analysis on the landscape structure of the Heihe River Basin, Northwest China Urban ecological land in Changsha City: Its quantitative analysis and optimization. Quantitative analysis of landscape patterns at the juncture of Shaanxi,Shanxi and Inner Mongolia,based on remote sensing data—Taking Yulin sheet TM image as an example A quantitative analysis on the landscape pattern change in Menglun, Xishuangbanna, China Dynamics of Landscape Pattern in Huanglong Mountain Forest Region of Northern Shaanxi Province Effects of changing grain size on landscape pattern analysis Landscape change in middle Heihe River Basin