Human appropriation of net primary production in the middle reach of Heihe River basin.

Chinese Journal of Applied Ecology

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Human appropriation of net primary production in the middle reach of Heihe River basin.

LONG Ai-hua^1,2;WANG Hao¹;CHENG Guo-dong²; YU Fu-liang¹

¹Department of Water Resources, China Institute of Water Resource and H
ydropower Research, Beijing 100044, China; ²State Key Laboratory of Frozen
Soil Engineering, Cold and Arid Environment and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

Received:2007-04-18 Revised:1900-01-01 Online:2008-04-20 Published:2008-04-20

Abstract

Abstract: Based on Miami model, this paper calculated the human appropriation of net primary production (HANPP) in the middle reach of Heihe River basin, discussed the relations between the HANPP and ecosystem diversity, and compared the values of HANPP and ecological footprint (EF) in sustainability assessment. The results showed that the increase of HANPP decreased the ecosystem diversity, and the current average HANPP in study area was 38.61%. The HANPP in Suzhou and Ganzhou districts already exceeded the potential maximum productivity. Considering the climate change and the development of social-economics, the ecosystems in study area would face more stress in the coming 40 years. Comparing with EF, HANPP was more available for the assessment of sustainability in the sight of ecosystem function change.

Key words: canopy photosynthesis, montane, rectangular hyperbola function, net ecosystem exchange, radiometer, slope-parallel installation

LONG Ai-hua^1,2;WANG Hao¹;CHENG Guo-dong²; YU Fu-liang¹. Human appropriation of net primary production in the middle reach of Heihe River basin. [J]. Chinese Journal of Applied Ecology.

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Human appropriation of net primary production in the middle reach of Heihe River basin.

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