Arid
DOI10.1016/j.geoderma.2012.08.014
Soil sorptivity enhancement with crop residue accumulation in semiarid dryland no-till agroecosystems
Shaver, T. M.1; Peterson, G. A.2; Ahuja, L. R.3; Westfall, D. G.2
通讯作者Shaver, T. M.
来源期刊GEODERMA
ISSN0016-7061
出版年2013
卷号192页码:254-258
英文摘要

Water capture and precipitation use efficiency are of great importance in dryland cropping systems because the world’s dependence on food produced in dryland areas continues to increase. Growing season evapotranspiration potential greatly exceeds growing season precipitation rates in dryland areas, creating a water deficit for crops. Management practices that positively impact soil physical properties increase the potential for soils to capture water. One way to assess the ability of soils to capture water is through the measurement of sorptivity. Sorptivity is defined as the cumulative infiltration proportionality constant and is governed by surface soil physical properties such as texture, degree of aggregation and aggregate stability. A study was conducted to determine how crop residue accumulation after 12 years of no-till management affects surface soil sorptivity under semi-arid dryland conditions and how sorptivity is related to surface soil physical properties known to be related to crop residue accumulation. Surface soil sorptivity, bulk density, porosity (total and effective) and aggregation measurements were made across cropping systems and soil positions representing a wide gradient of crop residue accumulation at 3 sites in eastern Colorado. Results show that increasing crop residue accumulation will have the indirect effect of increased sorptivity via improvements in soil aggregation, bulk density, and porosity that are conducive to water infiltration. Management practices that result in greater amounts of crop residue returned to the soil system lead to beneficial soil physical properties that increase water sorptivity, greatly reducing the potential for runoff and erosion, and thereby increase the precipitation use efficiency of the system. (C) 2012 Elsevier B.V. All rights reserved.


英文关键词Soil sorptivity Crop residue Soil physical properties
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000313154900027
WOS关键词PHYSICAL-PROPERTIES ; MANAGEMENT ; CARBON ; REMOVAL
WOS类目Soil Science
WOS研究方向Agriculture
来源机构Colorado State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/177323
作者单位1.Univ Nebraska Lincoln, Dept Agron & Hort, WCREC, N Platte, NE 69101 USA;
2.Colorado State Univ, Dept Soil & Crop Sci, Ft Collins, CO 80523 USA;
3.ARS, Agr Syst Res Unit, USDA, Ft Collins, CO 80526 USA
推荐引用方式
GB/T 7714
Shaver, T. M.,Peterson, G. A.,Ahuja, L. R.,et al. Soil sorptivity enhancement with crop residue accumulation in semiarid dryland no-till agroecosystems[J]. Colorado State University,2013,192:254-258.
APA Shaver, T. M.,Peterson, G. A.,Ahuja, L. R.,&Westfall, D. G..(2013).Soil sorptivity enhancement with crop residue accumulation in semiarid dryland no-till agroecosystems.GEODERMA,192,254-258.
MLA Shaver, T. M.,et al."Soil sorptivity enhancement with crop residue accumulation in semiarid dryland no-till agroecosystems".GEODERMA 192(2013):254-258.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Shaver, T. M.]的文章
[Peterson, G. A.]的文章
[Ahuja, L. R.]的文章
百度学术
百度学术中相似的文章
[Shaver, T. M.]的文章
[Peterson, G. A.]的文章
[Ahuja, L. R.]的文章
必应学术
必应学术中相似的文章
[Shaver, T. M.]的文章
[Peterson, G. A.]的文章
[Ahuja, L. R.]的文章
相关权益政策
暂无数据
收藏/分享

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。