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Characteristics of Dried Soil Layers Under Apple Orchards of Different Ages and Their Applications in Soil Water Managements on the Loess Plateau of China
Wang Yunqiang1,2,3; Shao Mingan4; Liu Zhipeng2,3; Zhang Chencheng2,3
2015-08-01
发表期刊PEDOSPHERE
ISSN1002-0160
卷号25期号:4页码:546-554
文章类型Article
摘要

Negative soil water balance (i.e., water input < water output) can lead to soil desiccation and subsequently the occurrence of a dried soil layer (DSL). The DSLs are generally studied at a specific sampling depth (e.g., 500 cm), and the actual extent of DSLs remains unknown due to the challenge of collecting deep soil samples. To investigate the characteristics of actual DSLs under different ages of apple orchards and ascertain the optimal age of apple orchards for avoiding/controlling the formation of DSLs, soil samples were collected to a depth of 1 800 cm under apple orchards of different ages in Changwu on the Loess Plateau of China. As the ages increased, soil water content (SWC) and mean SWC in DSLs showed an overall decreasing trend, whereas while DSL thickness and the quantity of water deficit (QWD) in DSLs demonstrated an increasing trend. The DSL was the thickest (1 600 cm) under the 17-year-old orchard, the forming velocity of DSL thickness was the highest at the apple tree growth stage of 9-17 years (168 cm year(-1)), and the highest increasing velocity of QWD (-181 mm year(-1)) was also observed at this stage. The thickness of DSL was significantly correlated with growth age and root depth of apple trees (r > 0.88), whereas the QWD and mean SWC in DSLs were found to have no correlation with them. The optimal age of apple orchards for avoiding/controlling the formation of DSLs was about 9 years. This information provided pertinent references for the management of deep water resources by controlling the growth age of plants.

关键词Deep Soil Growth Age Plant Roots Soil Desiccation Soil Water Content Soil-plant Water Relation
WOS标题词Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]Moisture ; Desiccation ; Depletion ; Recovery ; Alfalfa ; Drought ; Balance ; Restoration ; Vegetation ; Pasture
收录类别SCI
语种英语
WOS研究方向Agriculture
WOS类目Soil Science
WOS记录号WOS:000358630600006
出版者SCIENCE PRESS
引用统计
被引频次:17[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9268
专题生态环境研究室
通讯作者Wang Yunqiang
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China
3.Minist Water Resources, Yangling 712100, Peoples R China
4.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式
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Wang Yunqiang,Shao Mingan,Liu Zhipeng,et al. Characteristics of Dried Soil Layers Under Apple Orchards of Different Ages and Their Applications in Soil Water Managements on the Loess Plateau of China[J]. PEDOSPHERE,2015,25(4):546-554.
APA Wang Yunqiang,Shao Mingan,Liu Zhipeng,&Zhang Chencheng.(2015).Characteristics of Dried Soil Layers Under Apple Orchards of Different Ages and Their Applications in Soil Water Managements on the Loess Plateau of China.PEDOSPHERE,25(4),546-554.
MLA Wang Yunqiang,et al."Characteristics of Dried Soil Layers Under Apple Orchards of Different Ages and Their Applications in Soil Water Managements on the Loess Plateau of China".PEDOSPHERE 25.4(2015):546-554.
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