Spatial variability of soil hydraulic and physical properties in erosive sloping agricultural fields

作     者：Deepak Singh Alok Kumar Mishra Sridhar Patra Sankar Mariappan Nisha Singh Saswat Kumar Kar Deepak Singh;Alok Kumar Mishra;Sridhar Patra;Sankar Mariappan;Nisha Singh;Saswat Kumar Kar

作者机构：ICAR-Indian Institute of Soil and Water ConservationDehradun 248195India Sam Higginbottom University of AgricultureTechnology and SciencesPrayagraj 211007India Hemvati Nandan Bahuguna Garhwal UniversitySrinagar(Garhwal)246174India 

出 版 物：《Water Science and Engineering》 (水科学与水工程（英文版）)

年 卷 期：2023年第16卷第1期

页      面：57-66页

核心收录：

学科分类：0707[理学-海洋科学] 080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 0815[工学-水利工程] 081502[工学-水力学及河流动力学] 0813[工学-建筑学] 0824[工学-船舶与海洋工程] 0814[工学-土木工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：IISWC Indian Council of Agricultural Research, ICAR 

主　　题：Hydraulic conductivity Macropore Conservation tillage Spatiotemporal variability Soil erosion 

摘      要：It is essential to minimize soil quality degradation in sloping agricultural fields through stabilization and improvement of soil hydraulic properties using sustainable soil *** study aimed to analyze the impact of different tillage practices,including conventional tillage(CT),minimum tillage(MT),and zero tillage(ZT),on soil hydraulic conductivity in a sloping agricultural field under maizeewheat *** results showed that the highest runoff volume(257.40 m3),runoff coefficient(42.84%),and soil loss(11.3 t)were observed when the CT treatment was *** contrast,the lowest runoff volume(67.95 m3),runoff coefficient(11.35%),and soil loss(1.05 t)were observed when the ZT treatment was *** soil organic carbon and aggregate mean weight diameter were found to be significantly greater(with mean values of 0.79%and 1.19 mm,respectively)with the ZT treatment than with the CT *** the tilled treatments(CT and MT),substantial changes in the saturated soil hydraulic conductivity(ks),near-saturated soil hydraulic conductivity(k),and water-conducting porosity(ε)were observed between two crop *** three soil parameters were significantly higher in the period after maize harvesting than in the wheat growing *** contrast,no significant difference in these soil parameters was found when the untilled treatment(ZT)was carried *** regard to the slope positions,ks,k,andεshowed different behaviors under different *** toe slope position showed significantly lower ks andεvalues than the summit and middle slope *** the evaluated tillage practices,ZT was found to be the most promising means to improve the soil hydro-physical properties and effectively reduce surface runoff and soil erosion.