Measurement of ecological capital of Chinese terrestrial ecosystem based on remote sensing |
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Authors: | Pan?Yaozhong Peijun?Shi Wenquan?Zhu Xiaohe?Gu Email author" target="_blank">Yida?FanEmail author Jing?Li |
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Institution: | Key Laboratory of Environmental Change and Natural Disaster of the Ministry of Education of China, Beijing Normal University, Beijing 100875, China |
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Abstract: | The biosphere of the Earth is essential to human survival and development. The services of ecosystems are critical to the
functioning of the Earth’s life-support system. They contribute to human welfare both directly and indirectly. Ecological
capital refers to the sum of the direct biological resources value and the indirect ecosystem services value. It is necessary
to estimate the ecological capital in order to bring it to the society and market economic system, and draw the social attention
to ecological environment constructions. An estimation model for ecological capital based on remote sensing is presented in
this paper. The parameters in the model are quantitatively measured using NOAA/AVHRR and other ancillary data, including the
land cover types, the vegetation coverage, and the vegetation net primary productivity (NPP) of terrestrial ecosystem. Based
on the economic parameters in previously published studies and a few original calculations, the annual ecological capital
of the entire terrestrial ecosystem of China is quantitatively estimated at 6.44 trillion (1012) yuan (RMB), and the spatial distribution of the ecological capital is also analyzed. Traditional ecological methods to ecological
capital measurement are based on homogeneous plot scales, and the regional scaling is a key problem in their applications.
As the proposed remote sensing approach, it provides a new method to ecological capital measurement completely based on observation
data. It can not only overcome the regional scaling problem easily, but also allows the ecological capital to be estimated
objectively and spatial-explicitly. |
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Keywords: | terrestrial ecosystem ecological capital remote sensing quantitative measurement |
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