干旱区生态环境知识资源中心(Arid): MODELING ROOT ZONE SALINITY DYNAMICS USING INTEGRATED EFFECT OF SOIL, WATER, CROP AND CLIMATE FOR SEMI-ARID REGION

Arid

DOI	10.21162/PAKJAS/20.9582
	MODELING ROOT ZONE SALINITY DYNAMICS USING INTEGRATED EFFECT OF SOIL, WATER, CROP AND CLIMATE FOR SEMI-ARID REGION
	Kashif, Muhammad 1; Arshad, Muhammad 1; Cheema, Jehanzeb Masud 1; Waraich, Ejaz Ahmad 2
通讯作者	Kashif, Muhammad
来源期刊	PAKISTAN JOURNAL OF AGRICULTURAL SCIENCES
ISSN	0552-9034
EISSN	2076-0906
出版年	2020
卷号	57 期号:3 页码:849-863
英文摘要	The soil salinization in Indus Basin of Pakistan is becoming an important ecological unit among current issues. The use of poor quality groundwater for irrigation has aggravated the main problem of secondary salinization of the soil. Ground water due to the presence of salts can be a source of root zone salinization through capillary pressure-induced upward water flow or through its direct application for irrigation. To identify the more hazardous condition which results in root zone salt concentrations, we have used a combination of the mass balance equations for water and salt transport, accounting with rainfall distribution, irrigation application and groundwater contribution. In this study, a stochastic modeling frame work has been developed to evaluate the behavior of sugarcane cropping system on soil salinity with different irrigation scenarios and watertable conditions. The simulations were performed for a period of 34-years using actual climatic data for sugarcane crop. The results indicated that using PDF (Probability Density Functions) drawn value of groundwater salinity in simulations (i.e 0.009 mol(c).L-1), the mixing of canal water (having salinity value of 0.003 mol(c).L-1) with saline groundwater in any ratio i.e. 0.003 molc.L1,0.0048 mol(c).L-1, 0.006 mol(c).L-1, 0.0072 mol(c).L-1 and 0.009 mol(c).L-1 for S-1, S-2, S-3, S-4 and S-5 scenarios respectively, did not cause severe salinity problems under 300 cm, 600 cm and 1150 cm deep watertable conditions and long-term rootzone salt concentration remained below the crop threshold limit (i.e. 0.017 mol(c).L-1 for sugarcane crop). The maximum simulated value estimated under 300 cm deep watertable using S-5, was 0.0145 mol(c).L-1. On other hand, using the highest mean value of groundwater salinity in simulations (i.e 0.051 mol(c).L-1), enhanced the root zone salinity level up to and more than crop threshold value, particularly under shallow watertable conditions. The maximum simulated values for scenario S5 (0.051 mol(c).L-1 salinity) estimated under 300 cm, 600 cm and 1150 cm deep watertables, were 0.0485 mol(c).L-1, 0.0283 mol(c).L-1 and 0.0255 mol(c).L-1 respectively. The results showed that there was a greater influence of capillary flux on root zone salt concentration than irrigation water, the shallow saline watertable attributed greater root zone salinity due to more contribution through capillary up flow.
英文关键词	Sugarcane irrigation scenarios rainfall water table depth numerical modeling salt concentration capillary flux leaching flux crop ET
类型	Article
语种	英语
国家	Pakistan
收录类别	SCI-E
WOS记录号	WOS:000546678300030
WOS关键词	HYDRAULIC REDISTRIBUTION ; CONTROLLED ECOSYSTEMS ; HYDROLOGIC PROCESSES ; ACTIVE-ROLE ; IRRIGATION ; PLANTS ; VEGETATION ; QUALITY ; STRESS ; AREA
WOS类目	Agriculture, Multidisciplinary
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319719
作者单位	1.Univ Agr Faisalabad, Fac Agr Engn & Technol, Dept Irrigat & Drainage, Faisalabad, Pakistan; 2.Univ Agr Faisalabad, Dept Crop Physiol, Fac Agr, Faisalabad, Pakistan
推荐引用方式 GB/T 7714	Kashif, Muhammad,Arshad, Muhammad,Cheema, Jehanzeb Masud,et al. MODELING ROOT ZONE SALINITY DYNAMICS USING INTEGRATED EFFECT OF SOIL, WATER, CROP AND CLIMATE FOR SEMI-ARID REGION[J],2020,57(3):849-863.
APA	Kashif, Muhammad,Arshad, Muhammad,Cheema, Jehanzeb Masud,&Waraich, Ejaz Ahmad.(2020).MODELING ROOT ZONE SALINITY DYNAMICS USING INTEGRATED EFFECT OF SOIL, WATER, CROP AND CLIMATE FOR SEMI-ARID REGION.PAKISTAN JOURNAL OF AGRICULTURAL SCIENCES,57(3),849-863.
MLA	Kashif, Muhammad,et al."MODELING ROOT ZONE SALINITY DYNAMICS USING INTEGRATED EFFECT OF SOIL, WATER, CROP AND CLIMATE FOR SEMI-ARID REGION".PAKISTAN JOURNAL OF AGRICULTURAL SCIENCES 57.3(2020):849-863.