大冶湖流域景观生态动态变化及空间异质性研究

Study on dynamic changes of landscape ecology and spatial heterogeneity of Daye lake basin

选取高程、坡度、年均温、年降水、年均相对湿度、土地利用、植被指数等7个因子,利用RS、GIS相关的分析技术,对大冶湖流域历年景观生态进行综合评价.研究结果表明,大冶湖流域景观质量总体偏低,但随时间推移不断好转;景观质量呈现偏正态分布,结构较稳定;大冶湖流域景观质量南部地区高于北部地区,南北差异明显,大冶湖周边地区景观质量较差;大冶湖流域景观的多样性较低,均一性程度较高,呈现不断扩大的趋势.

Selecting seven factors in total of elevation, slope, annual average temperature, annual precipitation, annual average relative humidity, land use, vegetation index and using RS, GIS analysis technology, a comprehensive evaluation about the landscape ecological of the Daye lake basin was made each year. The conclusion is as follows： The quality of Daye lake basin is on the low side, but it gets better as time goes by; The landscape quality is normal distribution, and the structure is stable; the landscape quality in southern is higher than the north, the differences is apparent, and the landscape which surround Daye lake area is low; The diversity of landscape is low, the degree of homogeneity is high and shows a trend of increasing.