干旱区生态环境知识资源中心(Arid): Study on the performance of contour vegetative barriers in an arid region using numerical models

Arid

DOI	10.1016/S0378-3774(98)00114-0
	Study on the performance of contour vegetative barriers in an arid region using numerical models
	Sharma, KD; Joshi, NL; Singh, HP; Bohra, DN; Kalla, AK; Joshi, PK
通讯作者	Sharma, KD
ISSN	0378-3774
出版年	1999
卷号	41 期号:1 页码:41-56
英文摘要	The purpose of the study was to evaluate and derive the optimum spacing of contour vegetative barriers (CVB) of locally adapted, drought resistant plant species as soil and water conservation measures for rainfed crop-fields in an arid region. Adapted perennial grasses performed the best and formed effective barriers against soil erosion. Runoff volume and specific peak discharge were reduced by 28 to 97% and 22 to 96%, respectively using CVB with negligible soil loss. The resultant increase in soil moisture storage increased pearl millet crop yield by 35%. Hydrologic processes with respect to crop response for digitally generated CVB layouts were simulated using the distributed numerical models SWAMREG (rainfall-runoff) and SWACROP (moisture storage-plant transpiration-crop yield), and a personal computer-based geographic information system (GIS) for designing optimum CVB spacing. Inputs needed for these models are soil hydraulic parameters, daily meteorological data, and crop characteristics. Simulated outputs were validated with the observed runoff soil moisture storage and pearl millet yield data. At an optimum simulated vertical spacing of CVB between 0.5 and 0.6 m, 24% reduction in runoff resulted in better moisture regime and crop yield improvement by 70% over control. (C) 1999 Elsevier Science B.V. All rights reserved.
英文关键词	simulation vegetative barriers vertical interval soil moisture runoff surface storage transpiration yield
类型	Article
语种	英语
国家	India
收录类别	SCI-E
WOS记录号	WOS:000080505100004
WOS关键词	GRASS HEDGES ; SOIL
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
来源机构	ICAR Central Arid Zone Research Institute
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/136835
作者单位	(1)Cent Arid Zone Res Inst, Jodhpur 342003, Rajasthan, India;(2)Cent Res Inst Dry Land Agr, Hyderabad 500059, Andhra Pradesh, India
推荐引用方式 GB/T 7714	Sharma, KD,Joshi, NL,Singh, HP,et al. Study on the performance of contour vegetative barriers in an arid region using numerical models[J]. ICAR Central Arid Zone Research Institute,1999,41(1):41-56.
APA	Sharma, KD,Joshi, NL,Singh, HP,Bohra, DN,Kalla, AK,&Joshi, PK.(1999).Study on the performance of contour vegetative barriers in an arid region using numerical models.,41(1),41-56.
MLA	Sharma, KD,et al."Study on the performance of contour vegetative barriers in an arid region using numerical models".41.1(1999):41-56.