Evaluation Of Ecosystem Services Value Of Hangzhou Bay Area Based On Remote Sensing

Ecological asset is a comprehensive characterization of the biological resources direct value of ecological system and the indirect value of ecological services. It is the total assets of compound ecosystem in nature, economy and society. It is not only the material basis and guarantee of the national economic and social sustainable development, but also an important part of national competitiveness. In nowadays, the human society economy developing rapidly, ecological environment problem has become the bottleneck of economic development and social stability. In recent years, it has become the focus research in the field of ecology and economics at home and abroad. The development of remote sensing and geographic information technology not only can provide objective, rapid and dynamic information for ecological assets value assessment, but also reflect its time and space distribution characteristics. Thus, it has become the most effective means in today’s ecological asset.This paper integrated use of ecology, ecological economy theory、the remote sensing and geographic information technology, on the basis of defining the connotation of ecological asset 、 ecological value of the asset composition and ecosystem service functions, to human well-being as the starting point of MA classification system used as the main body framework to determine the classification system of ecosystem services, and combining ecology model and remote sensing information model, building the ecological asset remote sensing measurement evaluation index system. Using remote sensing images, soil, climate and ecological environment of MODIS data, to evaluate ecological assets in 2000、2005、2010、2015 of Hangzhou Bay, analyzing the change of the ecological asset and the status of the time and space distribution. Research conclusions are as follows:(1)Time changes of ecological asset showed that: the ecological asset value of Hangzhou Bay city in 2000,2005,2010 and 2015 has reached 781.86、811.085、824.40 and 810.37 billion yuan. The per unit area value, respectively was 586.98 million/km2, 608.92 million/km2, 618.92 million/km2 and 608.38 million/km2. From the different ecosystem types of ecological assets value point of view, forest ecosystem value > farmland ecosystem value > wetland ecosystem value > construction land ecosystem value > grassland ecosystem value. Among them, it has the lowest value and the minimum contribution.(2) The spatial distribution of ecological assets showed that: The distribution of Hangzhou Bay ecological asset value are gradually reduced from west to east in 2000、2005、2010and 2010. Among them, the western region was highest and the eastern was lowest. In 2000, the west of Hangzhou Bay ecological assets total value was 28.283 billion yuan, and the total value reached 52.028 billion yuan in 2010. Ecological assets in different areas were obvious. From the point of total value of ecological asset, ecological assets total value of Hangzhou Bay in 2000-2010 increased by 236.57 billion yuan, the per unit area value increased by 1.2417 million yuan.(3) The composition of ecological asset value showed that: From the aspects of single ecological asset value, in the structure of the ecological asset value in 2000、2005、2010 、2015three periods, follow the same rule, soil conservation value > water conservation value > air quality adjustment value > organic production value > nutrient cycling value. Among them, soil conservation value of 2000, 2005, 2010, 2015, respectively was 156.842 billion yuan, 289.781 billion yuan, 143.581 billion yuan. And least value was the value of nutrient cycling, respectively was 1.0542 million yuan, 1.6229 million yuan, 1.0952 million yuan.(4) Relationship between ecological asset and regional sustainable development showed that: From 2000 to 2015, the whole study area average ecological asset was on the rise. Ecological assets value assessment based on remote sensing provides objective and fast rating information and the spatial distribution characteristics. Research results can well reflect the status of regional ecological environment quality and its changes, it can provide important basis for regional sustainable development evaluation and ecological environment construction planning.