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	Mutual influence between human activities and climate change in the Tibetan Plateau during recent years
	Du M. Y. ; Kawashima S. ; Yonemura S. ; Zhang X. Z. ; Chen S. B.
	2004
关键词	biomass climate change feedback grassland livestock Tibetan Plateau general-circulation surface albedo temperature impact desertification precipitation
英文摘要	It is well known that there is a vast expanse of grassland on the Tibetan Plateau, China. It is suggested that a major climatic factor limiting production of the grassland ecosystem is the low thermo-conditions on the Tibetan Plateau. An increase in temperature may therefore increase the productivity of grasslands on the Plateau. Monthly mean temperature and monthly precipitation data for recent years on the Tibetan Plateau were analyzed. It is clear that the increase in air temperature on the Plateau is greater than that in the whole China and East Asia. On the other hand, statistics :,how that the production of livestock or meat in the Tibetan Plateau has increased by one to three times since 1978, which means that there should be an equivalent increase in the consumption of plant biomass from the grassland. How is the "increased biomass" related to human activities and climate changes? This paper tries to clarify the relationship between human activities and climate change and to propose a possible answer by laying emphasis on the importance of grassland protection and CO2 flux monitoring. It is suggested that there is a positive feedback in which degradation of grassland by overgrazing will increase potential evapotranspiration level thereby promoting the climate warming and the degradation process. This feedback should be considered seriously in the future. (C) 2004 Elsevier B.V. All rights reserved.
出处	Global and Planetary Change
卷	41
期	3-4
页	241-249
收录类别	SCI
语种	英语
ISSN号	0921-8181
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/24104]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Du M. Y.,Kawashima S.,Yonemura S.,et al. Mutual influence between human activities and climate change in the Tibetan Plateau during recent years. 2004.

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