Spatio-temporal pattern of net primary productivity in Hengduan Mountains area, China: impacts of climate change and human activities
文献类型：期刊论文
| 作者 | Chen Tiantian1,2 ; Peng Li1; Liu Shaoquan1; Wang Qiang3
|
| 刊名 | CHINESE GEOGRAPHICAL SCIENCE
 |
| 出版日期 | 2017-12-01 |
| 卷号 | 27期号:6页码:948-962 |
| 关键词 | Net Primary Productivity (Npp) Carnegie-ames-stanford Approach (Casa) Model Climate Change Human Activities Hengduan Mountains Area |
| ISSN号 | 1002-0063 |
| DOI | 10.1007/s11769-017-0895-5 |
| 通讯作者 | Li Peng |
| 英文摘要 | Net primary productivity (NPP), a metric used to define and identify changes in plant communities, is greatly affected by climate change, human activities and other factors. Here, we used the Carnegie-Ames-Stanford Approach (CASA) model to estimate the NPP of plant communities in Hengduan Mountains area of China, and to explore the relationship between NPP and altitude in this region. We examined the mechanisms underlying vegetation growth responses to climate change and quantitatively assessed the effects of ecological protection measures by partitioning the contributions of climate change and human activities to NPP changes. The results demonstrated that: 1) the average total and annual NPP values over the years were 209.15 Tg C and 468.06 g C/(m(2)center dot yr), respectively. Their trend increasingly fluctuated, with spatial distribution strongly linked to altitude (i.e., lower and higher NPP in high altitude and low altitude areas, respectively) and 2400 m represented the marginal altitude for vegetation differentiation; 2) areas where climate was the main factor affecting NPP accounted for 18.2% of the total research area, whereas human activities were the primary factor influencing NPP in 81.8% of the total research area, which indicated that human activity was the main force driving changes in NPP. Areas where climatic factors (i.e., temperature and precipitation) were the main driving factors occupied 13.6% (temperature) and 6.0% (precipitation) of the total research area, respectively. Therefore, the effect of temperature on NPP changes was stronger than that of precipitation; and 3) the majority of NPP residuals from 2001 to 2014 were positive, with human activities playing an active role in determining regional vegetation growth, possibly due to the return of farmland back to forest and natural forest protection. However, this positive trend is decreasing. This clearly shows the periodical nature of ecological projects and a lack of long-term effectiveness. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000415349200008 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/20623]  |
| 专题 | 成都山地灾害与环境研究所_山区发展研究中心 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chengdu Univ Technol, Chengdu 610059, Sichuan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen Tiantian,Peng Li,Liu Shaoquan,et al. Spatio-temporal pattern of net primary productivity in Hengduan Mountains area, China: impacts of climate change and human activities[J]. CHINESE GEOGRAPHICAL SCIENCE,2017,27(6):948-962. |
| APA | Chen Tiantian,Peng Li,Liu Shaoquan,&Wang Qiang.(2017).Spatio-temporal pattern of net primary productivity in Hengduan Mountains area, China: impacts of climate change and human activities.CHINESE GEOGRAPHICAL SCIENCE,27(6),948-962. |
| MLA | Chen Tiantian,et al."Spatio-temporal pattern of net primary productivity in Hengduan Mountains area, China: impacts of climate change and human activities".CHINESE GEOGRAPHICAL SCIENCE 27.6(2017):948-962. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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