气候变化领域集成服务门户(CCPortal): Induced soil degradation risks and plant responses by salinity and sodicity in intensive irrigated agro-ecosystems of seasonally-frozen arid regions

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DOI	10.1016/j.jhydrol.2021.127036
	Induced soil degradation risks and plant responses by salinity and sodicity in intensive irrigated agro-ecosystems of seasonally-frozen arid regions
	Yin, Xinwei; Feng, Qi; Li, Yan; Liu, Wei; Zhu, Meng; Xu, Guiqing; Zheng, Xinjun; Sindikubwabo, Celestin
发表日期	2021
ISSN	0022-1694
EISSN	1879-2707
卷号	603
英文摘要	Salinity and sodicity posing large risks to soil hydroecological functioning and agricultural production. However, a comprehensive investigating of the long-term salinity and sodicity dynamics and how these contribute to soil degradation risk and plant response in intensive irrigated agro-ecosystems is still scarce, especially in cold/arid agricultural regions. To quantify long-term soil degradation risk and plant response as driven by rainfall, irrigation and groundwater in seasonally-frozen arid regions, taking into account the influence of capillary flux from shallow brackish groundwater and annual soil freezing-thawing cycles and snowmelt infiltration to soil moisture (s), salinity (C-s) and sodicity (E-x), we coupled the Salt of the Earth (SOTE) model and the Wavelet Neural Network (WNN) model (i.e. SOTE-WNN model) as well as improved the Crop Response to the Soil Environment (ANSWER) model. The long-term dynamics of root zone s, C-s and E-x and therefore soil degradation risks and plant responses in irrigated agro-ecosystems in three different hydrological regions (i.e. ADFO: alluvial-diluvial-fan oasis; APOU: alluvial-plain oasis in the upper part; and APOL: alluvial-plain oasis in the lower part) in the Sangong River watershed (SRW) of northwestern China were investigated. The SOTE-WNN model was calibrated and validated using field comprehensive observations during April 2018-April 2021. The simulated results of root zone s, C-s and E-x resulted in a good agreement with the observed values in the SRW. Results showed that the s in the three hydrological regions has a similar periodic steady state with sawtooth pattern; the C-s is the largest in the APOL and corresponding the crop relative yield is the lowest; in the APOU the E-x is the largest and corresponding the soil degradation risk is the highest. Carried out sensitivity analysis revealed that the increase in rainfall and snowfall can clearly alleviate soil degradation by reducing soil alkalization in the root zone. The irrigation water quality is one of the primary controls on long-term dynamics of root zone s, C-s and E-x, and imposing adverse impact on soil hydraulic conductivity and agricultural crop productivity. The shallow groundwater table and quality have non-monotonic effects on the root zone s, C-s and E-x dynamics, the 2-3 m is the critical water table interval that limits soil salinization and alkalization hazards in the SRW. The results highlight that the trade-offs between irrigation water quality and water table need to be emphasized at appropriate spatial and temporal scales when promoting intensive irrigation practices in arid/cold climate regions.
英文关键词	Soil salinity; Soil sodicity; SOTE-WNN model; Soil degradation risk; Plant response; Sustainable land management
WOS研究方向	Engineering ; Geology ; Water Resources
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS关键词	WATER-CONTROLLED ECOSYSTEMS ; RIVER-BASIN ; HYDROLOGIC PROCESSES ; ACTIVE-ROLE ; DYNAMICS ; MOISTURE ; STRESS
WOS记录号	WOS:000706318300091
来源期刊	JOURNAL OF HYDROLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239422
作者单位	[Yin, Xinwei; Feng, Qi; Liu, Wei; Zhu, Meng; Sindikubwabo, Celestin] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Peoples R China; [Yin, Xinwei; Sindikubwabo, Celestin] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Li, Yan] Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Hangzhou 311300, Peoples R China; [Li, Yan; Xu, Guiqing; Zheng, Xinjun] Chinese Acad Sci, Fukang Stn Desert Ecol, Fukang 831505, Xinjiang, Peoples R China; [Xu, Guiqing; Zheng, Xinjun] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China
推荐引用方式 GB/T 7714	Yin, Xinwei,Feng, Qi,Li, Yan,et al. Induced soil degradation risks and plant responses by salinity and sodicity in intensive irrigated agro-ecosystems of seasonally-frozen arid regions[J]. 中国科学院西北生态环境资源研究院,2021,603.
APA	Yin, Xinwei.,Feng, Qi.,Li, Yan.,Liu, Wei.,Zhu, Meng.,...&Sindikubwabo, Celestin.(2021).Induced soil degradation risks and plant responses by salinity and sodicity in intensive irrigated agro-ecosystems of seasonally-frozen arid regions.JOURNAL OF HYDROLOGY,603.
MLA	Yin, Xinwei,et al."Induced soil degradation risks and plant responses by salinity and sodicity in intensive irrigated agro-ecosystems of seasonally-frozen arid regions".JOURNAL OF HYDROLOGY 603(2021).