IEECAS OpenIR  > 生态环境研究室
A new index to quantify dried soil layers in water-limited ecosystems: A case study on the Chinese Loess Plateau
Wang, Yunqiang1,2; Shao, Ming'an3,4; Zhu, Yuanjun3; Sun, Hui1; Fang, Linchuan3
2018-07-15
发表期刊GEODERMA
卷号322期号:7页码:1-11
文章类型Article
摘要Soil-water deficit causes dried soil layers (DSLs) worldwide in regions covered by deep soils including soils typically found on the Chinese Loess Plateau. Traditional indices for grading DSLs have a variety of units which may lead to inconsistent conclusions and comparisons. A new index to quantify DSLs is needed for studies in soil science, ecology, and hydrology. We proposed a new quantitative index (QI) to quantify the severity of DSLs and evaluated its utility using field data collected to a depth of 1800 cm at four sites. We then determined the spatial-temporal variation and influencing factors of the QI across the entire Loess Plateau based on data sets for 382 sites in 2008. The use of the QI decreased the influence of sampling depth and soil texture on DSL evaluation, and the inconsistency of the traditional indices in quantifying DSL severity. The comparison of traditional DSL indices and QI within the 0-1800 cm layer further verified that QI could capture the vertical changes of DSLs extent among different locations. The QIs ranged from 0.11 to 0.95 at a regional scale, with moderate variation (CV = 38%) throughout the Loess Plateau. Correlation, principal component, and minimum data set analyses showed that altitude, precipitation, normalized difference vegetation index, evaporation, land use, plant age and saturated soil water content explained, in descending order, most of the QI regional variation. A distributional map of QIs developed by using regression kriging indicated that most of the regions on the Loess Plateau had severe DSLs, especially in western part of the plateau. Land-use management (including plant age) most effectively mediated DSLs at different spatial and temporal scales. The proposed QI is expected to be widely used to characterise the overall condition of a DSL. The information on QI variation at a regional scale will be useful for reclaiming DSLs using land and vegetational management in regions around the world with deep soils.
关键词Deep Soil Moisture Land Use Quantitative Index Soil Desiccation Soil Water Management
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.geoderma.2018.02.007
关键词[WOS]EARTHS CRITICAL ZONE ; LAND-USE ; SPATIAL VARIABILITY ; MOISTURE RESPONSE ; TREE MORTALITY ; VEGETATION ; DROUGHT ; DESICCATION ; IMPACT ; REGION
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:000430777000001
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5155
专题生态环境研究室
作者单位1.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China
2.Beijing Normal Univ, Interdisciplinary Res Ctr Earth Sci Frontier, Beijing 100875, Peoples R China
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, 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
GB/T 7714
Wang, Yunqiang,Shao, Ming'an,Zhu, Yuanjun,et al. A new index to quantify dried soil layers in water-limited ecosystems: A case study on the Chinese Loess Plateau[J]. GEODERMA,2018,322(7):1-11.
APA Wang, Yunqiang,Shao, Ming'an,Zhu, Yuanjun,Sun, Hui,&Fang, Linchuan.(2018).A new index to quantify dried soil layers in water-limited ecosystems: A case study on the Chinese Loess Plateau.GEODERMA,322(7),1-11.
MLA Wang, Yunqiang,et al."A new index to quantify dried soil layers in water-limited ecosystems: A case study on the Chinese Loess Plateau".GEODERMA 322.7(2018):1-11.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
A new index to quant(1381KB)期刊论文出版稿开放获取CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Wang, Yunqiang]的文章
[Shao, Ming'an]的文章
[Zhu, Yuanjun]的文章
百度学术
百度学术中相似的文章
[Wang, Yunqiang]的文章
[Shao, Ming'an]的文章
[Zhu, Yuanjun]的文章
必应学术
必应学术中相似的文章
[Wang, Yunqiang]的文章
[Shao, Ming'an]的文章
[Zhu, Yuanjun]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。