Landscape Spatial-Temporal Evolution and Ecological Effects in Kunming City over the Past Twenty Years

Landscape pattern change will cause flow and change of energy, material and nutrient between different units of land, and can cause regional ecological processes and systems functional changes. As the capital city of Yunnan Province and the southwest gateway to China, Kunming city landscape structure takes place significant changes under the high-intensity human disturbance, then the environmental effects are certainly very obvious. Based on the past two decades land cover changes of Kunming, study applies 10 types of landscape indices on class level and landscape level, analyzes the landscape changes of forest, grass land, water area, farm land, residential surface, industrial land and bare land from year 1990 to 2010, then explores the various types of spatial and temporal evolution of the landscape, the regional landscape effects on the ecosystem, and provides a scientific reference for understanding the trend of ecological environment and promoting the coordinated development of regional economy and environment.