Effects of soil and water conservation practices on soil physicochemical properties in Gumara watershed, Upper Blue Nile Basin, Ethiopia

作     者：Mengie Belayneh Teshome Yirgu Dereje Tsegaye 

作者机构：Department of Geography and Environmental StudiesMettu UniversityBox 318MettuEthiopia Department of Geography and Environmental StudiesArba Minch UniversityBox 21Arba MinchEthiopia Department of Plant ScienceCollege of Agricultural SciencesArba Minch UniversityBox 21Arba MinchEthiopia 

出 版 物：《Ecological Processes》 (生态过程（英文）)

年 卷 期：2019年第8卷第1期

页      面：451-464页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 09[农学] 0815[工学-水利工程] 0903[农学-农业资源与环境] 0713[理学-生态学] 090301[农学-土壤学] 

基　　金：Arba Minch University Mettu University 

主　　题：Soil properties Soil erosion Soil and water conservation Analysis of variance Gumara watershed 

摘      要：Background:Soil erosion is among the foremost causes of declining soil resources in Ethiopia,which in turn affect agricultural *** limit this problem,for the last two decades in Gumara watershed,soil and water conservation measures have been practiced through free labor community ***,their effect on soil fertility has not been *** study investigated the impact of implemented soil and water conservation measures on fertility improvement in the Gumara *** composite and core soil samples were taken from upstream,midstream,and downstream adjacent conserved and non-conserved cultivated and grazing *** soil fertility indicators were analyzed using standard laboratory ***:Soil and water conservation practices have resulted in a statistically significantly higher mean values of total nitrogen,exchangeable Na+and Mg2+at p0.01,and of soil organic carbon and organic matter at p0.05 in the *** clay content,soil reaction,cation exchange capacity,and exchangeable K+showed nonsignificant,but higher mean values in conserved ***,the effects of conservation practices on soil properties were found more effective in cultivated land uses as compared to that of grazing land *** is because conservation treatments had significant effects on organic carbon,total nitrogen,exchangeable Na+and Mg2+in cultivated land uses but only on exchangeable Na+in grazing land *** interaction effect of treatments and land uses did not reach a statistically significant result for any of the soil properties considered in this ***:Conservation measures have important implications for improving soil fertility in the Gumara ***,proper guidance and follow-up,use of agro-forestry and grass strips,and maintenance are required for the watershed’s sustainability and good soil conditions.