气候变化领域集成服务门户(CCPortal): Variation of net primary productivity and its drivers in China's forests during 2000-2018

CCPortal

DOI	10.1186/s40663-020-00229-0
	Variation of net primary productivity and its drivers in China's forests during 2000-2018
	Ji, Yuhe; Zhou, Guangsheng; Luo, Tianxiang; Dan, Yakir; Zhou, Li; Lv, Xiaomin
通讯作者	Zhou, GS (通讯作者)
发表日期	2020
ISSN	2095-6355
EISSN	2197-5620
卷号	7 期号:1
英文摘要	Background Net primary productivity (NPP) in forests plays an important role in the global carbon cycle. However, it is not well known about the increase rate of China's forest NPP, and there are different opinions about the key factors controlling the variability of forest NPP. Methods This paper established a statistics-based multiple regression model to estimate forest NPP, using the observed NPP, meteorological and remote sensing data in five major forest ecosystems. The fluctuation values of NPP and environment variables were extracted to identify the key variables influencing the variation of forest NPP by correlation analysis. Results The long-term trends and annual fluctuations of forest NPP between 2000 and 2018 were examined. The results showed a significant increase in forest NPP for all five forest ecosystems, with an average rise of 5.2 gC center dot m(- 2)center dot year(- 1) over China. Over 90% of the forest area had an increasing NPP range of 0-161 gC center dot m(- 2)center dot year(- 1). Forest NPP had an interannual fluctuation of 50-269 gC center dot m(- 2)center dot year(- 1) for the five major forest ecosystems. The evergreen broadleaf forest had the largest fluctuation. The variability in forest NPP was caused mainly by variations in precipitation, then by temperature fluctuations. Conclusions All five forest ecosystems in China exhibited a significant increasing NPP along with annual fluctuations evidently during 2000-2018. The variations in China's forest NPP were controlled mainly by changes in precipitation.
关键词	CLIMATE CONTROLS ECOSYSTEM DYNAMICS
英文关键词	Net primary production (NPP); Forest ecosystem; annual precipitation; NPP model; Fluctuation; Variability
语种	英语
WOS研究方向	Forestry
WOS类目	Forestry
WOS记录号	WOS:000522105500002
来源期刊	FOREST ECOSYSTEMS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259777
推荐引用方式 GB/T 7714	Ji, Yuhe,Zhou, Guangsheng,Luo, Tianxiang,et al. Variation of net primary productivity and its drivers in China's forests during 2000-2018[J]. 中国科学院青藏高原研究所,2020,7(1).
APA	Ji, Yuhe,Zhou, Guangsheng,Luo, Tianxiang,Dan, Yakir,Zhou, Li,&Lv, Xiaomin.(2020).Variation of net primary productivity and its drivers in China's forests during 2000-2018.FOREST ECOSYSTEMS,7(1).
MLA	Ji, Yuhe,et al."Variation of net primary productivity and its drivers in China's forests during 2000-2018".FOREST ECOSYSTEMS 7.1(2020).