摘要
Abstract
Based on the spatial data of land utilization of Dandong in 2005 , choosing the number of patch, the separating degree of patch , diversity index of landscape, dominance index, evenness index, fragmentation index of landscape and other landscape features index to a quantitative analysis. Based on this, we analyze the land-use change, regional eco-environment in the study area. The results show: (1) Woodland landscape is the metric one in Dandong which owns largest area, the most extensive in distribution, strongest in consecution. Its area proportion is 65. 08% , patch number proportion 32. 9% , average patch area higher than 4. 56km /per, patch dispersion index only 0. 30. Next , the area proportion of farmland is also great by 22. 34% . The area proportion of paddy field is 4.75%. Grassland, shoal, towp, country land and the others are less than 3%. (2) A great part of woodland landscape is in the middle and north of Dandong in distribution. Paddy field,town and country land and other lands are in the east and south parts in concentrative distribution. ( 3 ) Eco-environment index in Dandong is higher by 0. 65 ,the condition of eco-environment is better than the other coastal cities.关键词
景观空间格局/景观特征指数/生态环境效应/丹东市Key words
landscape spatial pattern/ landscape metrics/ eco-environmental effect/Dandong分类
社会科学
