干旱区生态环境知识资源中心(Arid): Quantitative analysis of the impact of climate variability and human activities on grassland productivity of the Qilian Mountain National Park, China

Arid

DOI	10.1371/journal.pone.0300577
	Quantitative analysis of the impact of climate variability and human activities on grassland productivity of the Qilian Mountain National Park, China
	Li, Qiang; He, Guoxing; Zhang, Degang; Liu, Xiaoni
通讯作者	Li, Q
来源期刊	PLOS ONE
ISSN	1932-6203
出版年	2024
卷号	19 期号:5
英文摘要	To quantitatively analyze the impact of climate variability and human activities on grassland productivity of China's Qilian Mountain National Park, this study used Carnegic-Ames-Stanford Approach model (CASA) and Integrated Vegetation model improved by the Comprehensive and Sequential Classification System (CSCS) to assess the trends of grassland NPP from 2000 to 2015, the residual trend analysis method was used to quantify the impact of human activities and climate change on the grassland based on the NPP changes. The actual grassland NPP accumulation mainly occurred in June, July and August (autumn); the actual NPP showed a fluctuating upward trend with an average increase of 2.2 g Cm-2 a-1, while the potential NPP increase of 1.6 g Cm-2 a-1 and human-induced NPP decreased of 0.5 g Cm-2 a-1. The annual temperature showed a fluctuating upward trend with an average increase of 0.1 degrees C 10a-1, but annual precipitation showed a fluctuating upward trend with an average annual increase of 1.3 mm a-1 from 2000 to 2015. The area and NPP of grassland degradation caused by climate variability was significantly greater than that caused by human activities and mainly distributed in the northwest and central regions, but area and NPP of grassland restored caused by human activities was significantly greater than that caused by climate variability and mainly distributed in the southeast regions. In conclusion, grassland in Qilian Mountain National Park showed a trend of degradation based on distribution area, but showed a trend of restoration based on actual NPP. Climate variability was the main cause of grassland degradation in the northwestern region of study area, and restoration of grassland in the eastern region was the result of the combined effects of human activities and climate variability. Under global climate change, the establishment of Qilian Mountain National Park was of great significance to the grassland's protection and the grasslands ecological restoration that have been affected by humans.
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:001219469600017
WOS关键词	NET PRIMARY PRODUCTION ; LAND DEGRADATION ; CLASSIFICATION-SYSTEM ; VEGETATION ; DESERTIFICATION ; DYNAMICS
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405187
推荐引用方式 GB/T 7714	Li, Qiang,He, Guoxing,Zhang, Degang,et al. Quantitative analysis of the impact of climate variability and human activities on grassland productivity of the Qilian Mountain National Park, China[J],2024,19(5).
APA	Li, Qiang,He, Guoxing,Zhang, Degang,&Liu, Xiaoni.(2024).Quantitative analysis of the impact of climate variability and human activities on grassland productivity of the Qilian Mountain National Park, China.PLOS ONE,19(5).
MLA	Li, Qiang,et al."Quantitative analysis of the impact of climate variability and human activities on grassland productivity of the Qilian Mountain National Park, China".PLOS ONE 19.5(2024).