Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4380111 | Acta Ecologica Sinica | 2010 | 8 Pages |
Abstract
Research on ecosystems patterns and dynamics is critical for understanding the regional problems of resources and environment. In this study, based on the technology of RS and GIS, the composition, patterns and dynamics of the ecosystems in Haihe river basin during 1990-2005 were analyzed using landscape indices including the area of average patches, aggregation index and Shannon-Weaver diversity index. According to the development situation of economy and society in Haihe river basin, some driving factors for dynamics of ecosystems patterns were concluded based on correlation analysis. Results showed that the ecosystems patterns in Haihe river basin changed greatly from 1990 to 2005. The area of urban and grassland increased, but farmland, forest and wetland decreased. As for landscape indices, the area of average patches, value of aggregation index, clump index and diversity index all increased, indicating the trend of evenness for the whole ecosystems. Growth of population, economy growth together with urbanization and policy were the main driving factors for dynamics of ecosystem pattern in this basin.
Keywords
Related Topics
Life Sciences
Agricultural and Biological Sciences
Ecology, Evolution, Behavior and Systematics
Authors
Bai Yang, Ouyang Zhiyun, Zheng Hua, Xu Weihua, Zhang Cheng, Zhuang Changwei, Chen Shuai, Jiang Bo,