ANALYSIS ON THE CHANGE OF VEGETATION COVERAGE IN QINGHAI PROVINCE FROM 2000 TO 2012

摘要

Qinghai Province is one of the important provinces on the Qinghai-Tibet Plateau in China. Its unique alpine meadow ecosystemmakes it become the most concentrated areas of biodiversity in high altitudes in the world. Researching the vegetation coverage andchanges of Qinghai province can reflect effectively and timely processing of changes and problems of ecological quality in theregion. This research will give a long time series monitoring of the vegetation coverage of Qinghai province based on maximumvalue composite (MVC) and S-G filtering algorithm using MODIS data of the year of 2000–2012, then analyze the change usingcoefficient of variability(CV) and trend line analysis. According to research, during the past 13 years, more than half of QinghaiProvince’s vegetation coverage is well, both the east and south have a high coverage, while the northwest is lower. The changing ofvegetation coverage also has showed a steady and improving trend in 13 years. The largest area is slight improved area is about29.08% of the total area, and the second largest area is significant improved area is about 21.09% of the total area. In this researchcan learn directly the vegetation coverage and changes of Qinghai province and provide reference and scientific basis for theprotection and governance of ecological environment.