Ecohydrological advantage of young apple tree-based agroforestry and its response to extreme droughts on the semiarid Loess Plateau
文献类型：期刊论文
| 作者 | Zhao, Lianhao1,2; Gao, Xiaodong2,3,4,6; He, Nana5; Zhao, Xining2,3,4 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2022-06-15 |
| 卷号 | 321页码:13 |
| ISSN号 | 0168-1923 |
| 关键词 | Extreme droughts Soil moisture Transpiration Hydraulic failure Intercropping Dryland |
| DOI | 10.1016/j.agrformet.2022.108969 |
| 通讯作者 | Gao, Xiaodong(gao_xiaodong@nwafu.edu.cn) |
| 英文摘要 | Agroforestry is considered to be climate-smart; not only can it be profitable for smallholders, but also it represents a sustainable form of intensive agriculture that can help buffer the effects of extreme climate. However, its feasibility remains under dispute in semiarid regions, especially where there can be extreme droughts. We therefore investigated how intercropping with annual bioenergy crops, soybean (Glycine max) and canola (Brassica rapa), affects ecohydrology in young apple trees, and how the trees respond to droughts of varying degrees on the semiarid Loess Plateau of China. A monoculture orchard was used as a control, and the droughts were controlled by reducing natural precipitation by 15% (moderate drought) and 25% (severe drought). We found that, compared with the monoculture, the agroforestry system increased soil water storage (SWS) in the 80-280 cm by 5-8%, apple tree's daily water use (Q) by 76-118%, and transpiration per unit leaf area (TrL) by 3371%; it also promoted tree growth. Both drought levels affected soil water availability and water use. Compared with agroforestry without an enforced drought, moderate drought conditions reduced SWS in the 80-180 cm by 11-15%, the Q value by 19-24%, and TrL value by 13-17%, and these apple trees still had higher Q and TrL levels than monoculture trees suffering no drought; and severe drought conditions caused the apple trees to absorb soil water from deeper soil layers, and reduced SWS in the 80-280 cm by 16-18%, Q by 50-60% and TrL by 12-38%. However, there were no significant difference in Q, TrL and aboveground growth parameters for trees between monoculture and severe drought treatments. These findings demonstrate that agroforestry has clear ecohydrological advantage to monoculture for young apple trees in semiarid regions. |
| WOS关键词 | WATER SOURCES ; SPATIAL-DISTRIBUTION ; MORTALITY ; ORCHARDS ; IMPROVE ; CLIMATE ; SYSTEM ; ROOTS ; COCOA ; FLOW |
| 资助项目 | National Key Research and Development Program of China[2021YFD1900700] ; National Natural Science Foundation of China[42125705] ; Cyrus Tang Foundation ; Shaanxi Key Research and Development Program[2020ZDLNY0704] ; Natural Science Basic Research Program of Shaanxi[2021JC-19] ; CAS 'Youth Scholar of West China' Program[XAB2018A04] |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000795690500005 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Cyrus Tang Foundation ; Shaanxi Key Research and Development Program ; Natural Science Basic Research Program of Shaanxi ; CAS 'Youth Scholar of West China' Program |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/177016]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Gao, Xiaodong |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 4.Natl Engn Res Ctr Water Saving & Irrigat Technol Y, Yangling 712100, Shaanxi, Peoples R China 5.Northwest A&F Univ, Coll Water Resources & Architectural Engn, Beijing 712100, Shaanxi, Peoples R China 6.26,Xinong Rd, Beijing 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Lianhao,Gao, Xiaodong,He, Nana,et al. Ecohydrological advantage of young apple tree-based agroforestry and its response to extreme droughts on the semiarid Loess Plateau[J]. AGRICULTURAL AND FOREST METEOROLOGY,2022,321:13. |
| APA | Zhao, Lianhao,Gao, Xiaodong,He, Nana,&Zhao, Xining.(2022).Ecohydrological advantage of young apple tree-based agroforestry and its response to extreme droughts on the semiarid Loess Plateau.AGRICULTURAL AND FOREST METEOROLOGY,321,13. |
| MLA | Zhao, Lianhao,et al."Ecohydrological advantage of young apple tree-based agroforestry and its response to extreme droughts on the semiarid Loess Plateau".AGRICULTURAL AND FOREST METEOROLOGY 321(2022):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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