干旱区生态环境知识资源中心(Arid): Soil modeling for soil loss tolerance estimations: Exploring natural baselines and long-term variations

Arid

DOI	10.1016/j.gloplacha.2021.103548
	Soil modeling for soil loss tolerance estimations: Exploring natural baselines and long-term variations
	Ranathunga, Keerthika N.; Finke, Peter A.; Yin, Qiuzhen; Verdoodt, Ann; Yu, YanYan
通讯作者	Ranathunga, KN (corresponding author), Univ Ghent, Dept Environm, Res Grp Soilscape Genesis, Coupure Links 653, B-9000 Ghent, Belgium.
来源期刊	GLOBAL AND PLANETARY CHANGE
ISSN	0921-8181
EISSN	1872-6364
出版年	2021
卷号	204
英文摘要	Quantification of soil stocks and ecosystem services (ES) under changing climate need time series of climate and soil data. Here, we propose a new approach combining process-based soil and climate simulations to obtain such time series, and apply it onto a recent interglacial, Marine Isotope Stage (MIS) 5e. We combined the LOVECLIM climate model and the SoilGen2 soil evolution model to simulate soil development under two scenarios: dust addition plus erosion and erosion-only (both with five erosion rates corresponding to low, natural erosion rates: 0, 0.5, 1.0, 1.5 and 2.0 Mg ha(-1) y(-1)). We quantified five target variables: two soil stocks, Exchangeable Bases (EB) and Soil Organic Carbon (SOC), and three ES: Carbon Sequestration Capacity (CSC), Water Yield (WY) and the ratio of actual over potential evapotranspiration (omega) at four sites on an aridity gradient on the Chinese Loess Plateau (CLP). We used the obtained time series of these target variables to estimate Soil Loss Tolerance (SLT) threshold values over the full extent of MIS 5e (22 ka). Under increased erosion, EB increases while SOC always declines in both scenarios. In both scenarios, the simulated CSC increases with erosion; contrastingly, the WY decreases with increasing erosion rates. Both CSC, WY and omega gradually decrease towards the northwest CLP (semi-arid region). For EB and SOC, the determined SLT thresholds are relatively higher in the dust addition than in the erosion-only scenarios, and strictly follow the climate gradient in the CLP. Combined performance index for (1-CSC), WY and omega, showed that soil ES performance is worse above 1.0 Mg ha(-1) y(-1). This implies that benchmark levels must be chosen carefully. Our research highlights the potential of using SoilGen2 with LOVECLIM for quantifying soil-based ES and SLT.
英文关键词	Chinese loess plateau Exchangeable bases Soil organic carbon Carbon sequestration capacity Water yield Last Interglacial
类型	Article
语种	英语
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000687257000004
WOS关键词	CHINESE LOESS PLATEAU ; ECOSYSTEM SERVICES ; CARBON SATURATION ; NORTHERN CHINA ; EROSION RATES ; FRAMEWORK ; CLIMATE ; CLAY ; QUANTIFICATION ; STABILIZATION
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363448
作者单位	[Ranathunga, Keerthika N.; Finke, Peter A.] Univ Ghent, Dept Environm, Res Grp Soilscape Genesis, Coupure Links 653, B-9000 Ghent, Belgium; [Ranathunga, Keerthika N.; Yin, Qiuzhen] Catholic Univ Louvain, Georges Lemaitre Ctr Earth & Climate Res, Earth & Life Inst, Pl Louis Pasteur 3, B-1348 Louvain La Neuve, Belgium; [Verdoodt, Ann] Univ Ghent, Dept Environm, Res Grp Soil Degradat & Conservat, Coupure Links 653, B-9000 Ghent, Belgium; [Yu, YanYan] Chinese Acad Sci IGGCAS, Inst Geol & Geophys, 19,Beitucheng Xilu, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Ranathunga, Keerthika N.,Finke, Peter A.,Yin, Qiuzhen,et al. Soil modeling for soil loss tolerance estimations: Exploring natural baselines and long-term variations[J],2021,204.
APA	Ranathunga, Keerthika N.,Finke, Peter A.,Yin, Qiuzhen,Verdoodt, Ann,&Yu, YanYan.(2021).Soil modeling for soil loss tolerance estimations: Exploring natural baselines and long-term variations.GLOBAL AND PLANETARY CHANGE,204.
MLA	Ranathunga, Keerthika N.,et al."Soil modeling for soil loss tolerance estimations: Exploring natural baselines and long-term variations".GLOBAL AND PLANETARY CHANGE 204(2021).