瀋陽市東陵區景觀格局變化及其對環境影響的研究

CHANGE OF LANDSCAPE PATTERN AND ITS INFLUENCE ON THE ENVIRONMENT IN DONGLING DISTRICT OF SHENYANG CITY.

瀋陽市東陵區為城鄉交接型生態脆弱帶，人工干擾活動表現極為強烈。用景觀格局指數：各類嵌塊體占的百分比（Pi 、嵌塊體的平均大小（S）和數量（n）、嵌塊體的分數維（F），景觀的多樣性指數（H）、優勢度指數（D）、蔓延度指數（C）以及人工干擾指數（V），來研究景觀格局變化指出，東陵區的景觀日趨破碎、多樣性增加、優勢度下降、不同的地貌單元嵌塊體的分數維和蔓延度不等。景觀生態結構的這種變化既帶來某些效益，又造成某些生態環境的破壞。

Dongling district of Shenyang city is ecotone between city and country side. Human disturbances display seriousness. Change of landscape pattern is studied by using indices of landscape pattern: proportion of the landscape in different land use, average area and of quantity of patchs, fractal dimension of patchs, indices of diversity, dominance and contagion and index of human disturbance. There are much changes of the landscape pattern of Dangling district for the last 30 years and more. The landscape pattern is breaking, and the diversity increasing, the dominance decreasing. There are different fractal dimension and contagion in .distinct geomorphological unit. The changes of landscape pattern bring some beneficial result and cause deterioration of ecological environment.