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Synergy and trade-off between carbon sequestration and soil water balance: impact of revegetation choices

文献类型：期刊论文

作者Liu, Yu1,2; Li, Ya1,2
刊名ENVIRONMENTAL EARTH SCIENCES
出版日期2019-12-01
卷号78期号:23页码:10
关键词Soil carbon sequestration Soil moisture Trade-off and synergy Semiarid environment
ISSN号1866-6280
DOI10.1007/s12665-019-8646-9
通讯作者Liu, Yu(liuyu@igsnrr.ac.cn)
英文摘要Revegetation is an effective measure for preventing land degradation and for mitigating climate change by reducing carbon dioxide in the atmosphere. However, vegetation cover is also generally considered to be a cause of a dried soil layer in drylands. The trade-off between soil water storage and soil carbon sequestration along a precipitation gradient in dryland ecosystems is well known, but the contributions of revegetation measures on the variations in the trade-off between carbon sequestration and soil water resource maintenance in soil profiles are often ignored. In this study, the trade-off and synergy between soil moisture content (SMC) maintenance and soil organic carbon (SOC) improvement in soil profiles on a semiarid hillslope are investigated in the context of revegetation choices. Three revegetation choices were selected for the comparative analysis: (a) afforestation using single tree species (Robinia pseudoacacia); (b) mixed tree species (R. pseudoacacia and Hippophae rhamnoides Linn); and (c) a mosaic of single tree bands (R. pseudoacacia, Armeniaca vulgaris, and H. rhamnoides Linn). Our results reveal a shift of synergy to trade-off at a depth of around 10-30 cm and a weakened trade-off between the middle (30-40 cm) and deep soil layers. For afforestation using a single tree species, there is a trade-off between SOC improvement and SMC promotion, as indicated by a negative correlation between the relative benefit of SOC and the relative benefit of SMC. For revegetation using mixed tree species and a mosaic of tree bands, positive correlations appeared. We draw two conclusions from these results: first, a shift in the trade-off and synergy between SMC maintenance and SOC improvement exists in soil profiles after revegetation on this semiarid hillslope; second, revegetation choices matter when reconciling the trade-off between SMC maintenance and SOC improvement. Revegetation with a single tree species (R. pseudoacacia) is not a good choice. When discussing the trade-off between carbon sequestration and soil water resource conservation in water-limited regions, more attention should be paid to site-level mechanisms and revegetation choices.
WOS关键词SEMIARID LOESS PLATEAU ; LAND-USE ; ORGANIC-CARBON ; PRECIPITATION GRADIENT ; RAINFALL INTERCEPTION ; CANOPY INTERCEPTION ; ECOSYSTEM SERVICES ; BLACK LOCUST ; VEGETATION ; EVAPOTRANSPIRATION
资助项目National Natural Science Foundation[41671186] ; National Natural Science Foundation[41390464] ; International Partnership Program of the Chinese Academy of Sciences[121311KYSB20170004]
WOS研究方向Environmental Sciences & Ecology ; Geology ; Water Resources
语种英语
WOS记录号WOS:000511851000001
出版者SPRINGER
资助机构National Natural Science Foundation ; International Partnership Program of the Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/132449]  
专题中国科学院地理科学与资源研究所
通讯作者Liu, Yu
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resource & Environm, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Yu,Li, Ya. Synergy and trade-off between carbon sequestration and soil water balance: impact of revegetation choices[J]. ENVIRONMENTAL EARTH SCIENCES,2019,78(23):10.
APA Liu, Yu,&Li, Ya.(2019).Synergy and trade-off between carbon sequestration and soil water balance: impact of revegetation choices.ENVIRONMENTAL EARTH SCIENCES,78(23),10.
MLA Liu, Yu,et al."Synergy and trade-off between carbon sequestration and soil water balance: impact of revegetation choices".ENVIRONMENTAL EARTH SCIENCES 78.23(2019):10.

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来源：地理科学与资源研究所

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