Evaluation of Landscape Pattern Changes and Ecological Effects in Land Reclamation Project of Homestead in Hilly and Mountainous Regions of Southwest China

• Main Authors: LUO You-jin, YU Duan, HAN Guo-hui, WANG Wu, HU Jia-yu, XIE Yong-hong, LIAO Dun-xiu
• Format: Article
• Language: zho
• Published: Agro-Environmental Protection Institute, Ministry of Agriculture 2015-10-01
• Series: Journal of Agricultural Resources and Environment
• Subjects: land reclamation of homestead; land use; landscape; ecological effects
• Online Access: http://www.aed.org.cn/nyzyyhjxb/html/2015/5/20150502.htm
• ISSN: 2095-6819; 2095-6819

In order to research the effects of landscape pattern and ecological effects caused by homestead land reclamation in hilly and mountainous regions of southwest China, taking land reclamation project of homestead in Dazhu Village, Qiantang Town, Hechuan District of Chongqing City as an example, the land use structure and landscape pattern changes were studied based on ArcGIS and methods of landscape ecology. The ecological effects were evaluated with an indices system which was constructed with optimized landscape pattern and the weight assigned for each index by AHP (analytic hierarchy process) method. The results showed that the ecological environment was improved as a result of homestead land reclamation project. Almost of the evaluation index, such as length and density of corridor and ecological services value, had positive effects on ecosystem. But the dominance index and fractal dimension index had negative effects. In conclusion, the rural scattered residential areas were concentrated to some extent by implement of the homestead land reclamation project, which saved the rural residents living area to provide the land utilization index for urban and rural construction and conducive to the development of new rural construction and rural ecological civilization construction.