Arid
DOI10.1016/j.actao.2013.12.006
Dynamic of grassland vegetation degradation and its quantitative assessment in the northwest China
Zhou, Wei1; Gang, Chengcheng1; Zhou, Liang2; Chen, Yizhao1; Li, Jianlong1; Ju, Weimin3; Odeh, Inakwu4
通讯作者Li, Jianlong
来源期刊ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY
ISSN1146-609X
EISSN1873-6238
出版年2014
卷号55页码:86-96
英文摘要

Grasslands, one of the most widespread land cover types in China, are of great importance to natural environmental protection and socioeconomic development. An accurate quantitative assessment of the effects of inter-annual climate change and human activities on grassland productivity has great theoretical significance to understanding the driving mechanisms of grassland degradation. Net primary productivity (NPP) was selected as an indicator for analyzing grassland vegetation dynamics from 2001 to 2010. Potential NPP and the difference between potential NPP and actual NPP were used to represent the effects of climate and human factors, respectively, on grassland degradation. The results showed that 61.49% of grassland areas underwent degradation, whereas only 38.51% exhibited restoration. In addition, 65.75% of grassland degradation was caused by human activities whereas 19.94% was caused by inter-annual climate change. By contrast, 32.32% of grassland restoration was caused by human activities, whereas 56.56% was caused by climatic factors. Therefore, inter-annual climate change is the primary cause of grassland restoration, whereas human activities are the primary cause of grassland degradation. Grassland dynamics and the relative roles of climate and human factors in grassland degradation and restoration varied greatly across the five provinces studied. The contribution of human activities to grassland degradation was greater than that of climate change in all five provinces. Three outcomes were observed in grassland restoration: First, the contribution of climate to grassland restoration was greater than that of human activities, particularly in Qinghai, Inner Mongolia, and Xinjiang. Second, the contribution of human activities to grassland restoration was greater than that of climate in Gansu. Third, the two factors almost equally contributed to grassland restoration in Tibet. Therefore, the effectiveness of ecological restoration programs should be enhanced whenever climate change promotes grassland restoration. (C) 2014 Elsevier Masson SAS. All rights reserved.


英文关键词Grassland degradation Climate change Human intervention Grassland restoration Tibetan plateau
类型Article
语种英语
国家Peoples R China ; Australia
收录类别SCI-E
WOS记录号WOS:000331773100012
WOS关键词NET PRIMARY PRODUCTION ; LAND DEGRADATION ; TIBETAN PLATEAU ; ASSESSING DESERTIFICATION ; HUMAN APPROPRIATION ; CLIMATE-CHANGE ; RELATIVE ROLE ; SOIL CARBON ; MANAGEMENT ; TRENDS
WOS类目Ecology
WOS研究方向Environmental Sciences & Ecology
来源机构南京大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/180357
作者单位1.Nanjing Univ, Sch Life Sci, Nanjing 210093, Jiangsu, Peoples R China;
2.Nanjing Univ, Sch Geog & Oceanog Sci, Nanjing 270093, Jiangsu, Peoples R China;
3.Nanjing Univ, Int Inst Earth Syst Sci, Nanjing 210093, Jiangsu, Peoples R China;
4.Univ Sydney, Fac Agr & Environm, Dept Environm Sci, Sydney, NSW 2006, Australia
推荐引用方式
GB/T 7714
Zhou, Wei,Gang, Chengcheng,Zhou, Liang,et al. Dynamic of grassland vegetation degradation and its quantitative assessment in the northwest China[J]. 南京大学,2014,55:86-96.
APA Zhou, Wei.,Gang, Chengcheng.,Zhou, Liang.,Chen, Yizhao.,Li, Jianlong.,...&Odeh, Inakwu.(2014).Dynamic of grassland vegetation degradation and its quantitative assessment in the northwest China.ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY,55,86-96.
MLA Zhou, Wei,et al."Dynamic of grassland vegetation degradation and its quantitative assessment in the northwest China".ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 55(2014):86-96.
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