Large-scale estimates of gross primary production on the Qinghai-Tibet plateau based on remote sensing data

NWIPB OpenIR

	Large-scale estimates of gross primary production on the Qinghai-Tibet plateau based on remote sensing data
	Ma, Minna; Yuan, Wenping; Dong, Jie; Zhang, Fawei; Cai, Wenwen; Li, Hongqin
	2018
发表期刊	INTERNATIONAL JOURNAL OF DIGITAL EARTH
卷号	11 期号:11
摘要	Vegetation gross primary production (GPP) is an important variable for the carbon cycle on the Qinghai-Tibetan Plateau (QTP). Based on the measurements from 12 eddy covariance flux sites, we validated a light use efficiency model (i.e. EC-LUE) to evaluate the spatial-temporal patterns of GPP and the effect of environmental variables on QTP. In general, EC-LUE model performed well in predicting GPP at different time scale over QTP. Annual GPP over the entire QTP ranged from 575 to 703 Tg C, and showed a significantly increasing trend from 1982 to 2013. However, there were large spatial heterogeneities in long-term trends of GPP. Throughout the entire QTP, air temperature increase had a greater influence than solar radiation and precipitation (PREC) changes on productivity. Moreover, our results highlight the large uncertainties of previous GPP estimates due to insufficient parameterization and validations. When compared with GPP estimates of the EC-LUE model, most Coupled Model Intercomparison Project (CMIP5) GPP products overestimate the magnitude and increasing trends of regional GPP, which potentially impact the feedback of ecosystems to regional climate changes.
关键词	Qinghai-Tibetan Plateau gross primary production EC-LUE model eddy covariance light use efficiency
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/60030
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Ma, Minna,Yuan, Wenping,Dong, Jie,et al. Large-scale estimates of gross primary production on the Qinghai-Tibet plateau based on remote sensing data[J]. INTERNATIONAL JOURNAL OF DIGITAL EARTH,2018,11(11).
APA	Ma, Minna,Yuan, Wenping,Dong, Jie,Zhang, Fawei,Cai, Wenwen,&Li, Hongqin.(2018).Large-scale estimates of gross primary production on the Qinghai-Tibet plateau based on remote sensing data.INTERNATIONAL JOURNAL OF DIGITAL EARTH,11(11).
MLA	Ma, Minna,et al."Large-scale estimates of gross primary production on the Qinghai-Tibet plateau based on remote sensing data".INTERNATIONAL JOURNAL OF DIGITAL EARTH 11.11(2018).