Sensitivity analysis of the DeNitrification and Decomposition model for simulating regional carbon budget at the wetland-grassland area on the Zoige Plateau, china

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2016 > Vol13 No.7

	Sensitivity analysis of the DeNitrification and Decomposition model for simulating regional carbon budget at the wetland-grassland area on the Zoige Plateau, china
	Wang Jiyan 1,2; Li Ainong 1; Jin Huaan 1; Li Ai-nong; Jin Hua-an; Wang Ji-yan
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2016-07-01
卷号	13 期号:7 页码:1200-1216
关键词	Sensitivity analysis OAT EFAST DNDC model Carbon budget Zoige Plateau
ISSN号	1672-6316
通讯作者	LI Ainong
英文摘要	Although mathematical models (e.g., DeNitrification and DeComposition (DNDC) provide a powerful tool to study regional carbon budget, it is still difficult to obtain accurate simulation results because there exists large uncertainties in modeling regional carbon budget. Through the investigation on the sensitivity of model output parameters to the input parameters, sensitivity analysis (SA) has been proved to be able to identify the key sources of uncertainties and be helpful to reduce the model uncertainties. However, some input parameters with discrete values (e.g., land use type and soil type) and the regional effect of the sensitive parameters were rarely examined in SA. In this paper, taking the Zoige Plateau as a case area, we combined the one-factor-at-a-time (OAT) with Extended Fourier Amplitude Sensitivity Test (EFAST) to conduct a SA of DNDC for simulating the regional carbon budget, including Gross Primary Productivity (GPP), Net Primary Productivity (NPP), Net Ecosystem Productivity (NEP), autotrophic respiration (Ra), soil microbial heterotrophic respiration (Rh) and ecosystem respiration (Re). The result showed that the combination of OAT and EFAST could test the contribution of the input parameters with discrete values to the output parameters. In DNDC model, land use type and soil type had a significant impact on the regional carbon budget of the Zoige Plateau, and daily temperature was also confirmed to be one of the most important parameters for carbon budget. For the other input parameters, with the change of land use type or soil type at regional scale, the sensitive parameters of carbon budget would vary accordingly. The SA results would provide scientific evidence to optimize DNDC model and they suggested that we should pay attention to the spatial/temporal effect of SA and try to use the appropriate data in simulation of the regional carbon budget.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	GREENHOUSE-GAS EMISSIONS ; PROCESS-ORIENTED MODEL ; NET PRIMARY PRODUCTION ; ECOSYSTEM RESPIRATION ; HYDROLOGICAL MODEL ; NO EMISSIONS ; FOREST SOILS ; PARAMETERS ; UNCERTAINTY ; PEATLAND
收录类别	SCI
语种	英语
WOS记录号	WOS:000379268900006
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/17259]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2016_Vol13 No.7 成都山地灾害与环境研究所_数字山地与遥感应用中心
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang Jiyan,Li Ainong,Jin Huaan,et al. Sensitivity analysis of the DeNitrification and Decomposition model for simulating regional carbon budget at the wetland-grassland area on the Zoige Plateau, china[J]. JOURNAL OF MOUNTAIN SCIENCE,2016,13(7):1200-1216.
APA	Wang Jiyan,Li Ainong,Jin Huaan,Li Ai-nong,Jin Hua-an,&Wang Ji-yan.(2016).Sensitivity analysis of the DeNitrification and Decomposition model for simulating regional carbon budget at the wetland-grassland area on the Zoige Plateau, china.JOURNAL OF MOUNTAIN SCIENCE,13(7),1200-1216.
MLA	Wang Jiyan,et al."Sensitivity analysis of the DeNitrification and Decomposition model for simulating regional carbon budget at the wetland-grassland area on the Zoige Plateau, china".JOURNAL OF MOUNTAIN SCIENCE 13.7(2016):1200-1216.