Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
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ISSN | 1146-609X |
EISSN | 1873-6238 |
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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文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
Dynamic of grassland(2703KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 |
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