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Disentangling the formation and evolvement mechanism of plants-induced dried soil layers on China's Loess Plateau
Jia, YH (Jia, Yuhua)1; Li, TC (Li, Tongchuan)2; Shao, MA (Shao, Ming'an)3; Hao, JH (Hao, Jianhui)1,7; Wang, YQ (Wang, Yunqiang)4; Jia, XX (Jia, Xiaoxu)2; Zeng, C (Zeng, Ceng)5; Fu, XL (Fu, Xiaoli)2; Liu, BX (Liu, Bingxia)6; Gan, M (Gan, Miao)1; Zhao, MY (Zhao, Mingyang)1; Ju, XN (Ju, Xinni)1
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
2019
Volume269Issue:0Pages:57-70
DOI10.1016/j.agrformet.2019.02.011
Abstract

The extent of the effect of China's Loess Plateau on global climate change partially depends on the achievements of the Grain for Green Program (GFGP). This region is prone to drought problems, especially the widespread creation of dried soil layer (DSL), which is intensified by the revegetation from GFGP initiatives. A DSL is the result of soil desiccation in deep soil profiles. The occurrence and expansion of DSLs are strengthened by the high risk of the Loess Plateau to climate change. On the basis of the 14-year data of soil water content (SWC) of four revegetation types on a loessial slope, we investigated the evolution processes and recovery possibility of DSL. Results showed that both variation trends and abrupt changes in the SWC time series were distinctly affected by revegetation. The 40 cm thickness of the DSL was triggered when Medicago sativa and Caragana korshinskii grew for 2 and 4 years, respectively. The downward extension depth of DSL reached 580 cm under the two plants above within 7 and 8 years of planting. However, the results suggested the possibility of DSL disappearance as shown by the formation depth dynamics of DSL, the fluctuation of DSL-SWC, and the phenomenon of sandwiched DSL. During deep moisture recharge and DSL recovery, although the SWC sensitivity to textural variation was present in the vertical profile, the effects of soil texture on SWC were decreased. Wet climate was linked to both DSL thinning and thickening. Thus, the effect of wet climate is bidirectional for DSL development, thereby highlighting the important role of revegetation. The results of this work enhance our understanding of DSL and may help alleviate the risk of drought in the Loess Plateau.

Subject AreaAtmospheric Sciences
WOS IDWOS:000463120900006
Language英语
Indexed BySCI
KeywordTemporal Stability Climate-change Spatial Variability Water Storage Vegetation Moisture Desiccation Responses Dynamics Afforestation
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
Cooperation Status国内
ISSN0168-1923
Department环境变化与地表过程
URL查看原文
PublisherELSEVIER
SubtypeArticle
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9302
Collection图书馆
Corresponding AuthorJia, YH (Jia, Yuhua); Shao, MA (Shao, Ming'an)
Affiliation1.Shenyang Agr Univ, Shenyang 110866, Liaoning, Peoples R China;
2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China;
3.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China;
4.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China;
5.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China;
6.Chinese Acad Sci, Hebei Lab Agr Water Saving, Key Lab Agr Water Resources, Ctr Agr Resources Res,Inst Genet & Dev Biol, Shijiazhuang 050021, Hebei, Peoples R China;
7.Inner Mongolia Univ Nationalities, Tongliao 028000, Inner Mongolia, Peoples R China.
Recommended Citation
GB/T 7714
Jia, YH ,Li, TC ,Shao, MA ,et al. Disentangling the formation and evolvement mechanism of plants-induced dried soil layers on China's Loess Plateau[J]. AGRICULTURAL AND FOREST METEOROLOGY,2019,269(0):57-70.
APA Jia, YH .,Li, TC .,Shao, MA .,Hao, JH .,Wang, YQ .,...&Ju, XN .(2019).Disentangling the formation and evolvement mechanism of plants-induced dried soil layers on China's Loess Plateau.AGRICULTURAL AND FOREST METEOROLOGY,269(0),57-70.
MLA Jia, YH ,et al."Disentangling the formation and evolvement mechanism of plants-induced dried soil layers on China's Loess Plateau".AGRICULTURAL AND FOREST METEOROLOGY 269.0(2019):57-70.
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