Invasion of Prosopis juliflora and its effects on soil physicochemical properties in Afar region,Northeast Ethiopia  

作　　者：Wakshum Shiferaw Sebsebe Demissew Tamrat Bekele Ermias Aynekulu Wolfgang Pitroff 

机构地区：[1]Arba Minch University,College of Agricultural Sciences,Natural Resources Management,P.O.Box 21,Arba Minch,Ethiopia [2]Addis Ababa University,College of Natural Sciences,Plant Biology and Biodiversity Management,P.O.Box 3434,Addis Ababa,Ethiopia [3]The World Agroforestry Centre(ICRAF),UN Avenue,P.O.Box 30677,Nairobi,Kenya [4]College of Agriculture,Food and Natural Resources,University of Missouri,Columbia,USA

出　　处：《International Soil and Water Conservation Research》2021年第4期631-638,共8页国际水土保持研究（英文）

摘　　要：Woody species within pastures and savannas are often associated with‘resource islands’characterized by higher fertility under canopies trees.The aims of this study were to evaluate(1)the effects of Prosopis juliflora on some soil physicochemical properties and(2)the impacts of Prosopis invasion on soil salinity.For soil physicochemical analysis,a total of 104 soil samples from Teru and Yalo Districts were collected.The soil samples were collected from soil depths of 0-15 cm and 15-30 cm in Prosopis invaded and non-invaded open grazing lands.Invasion of Prosopis had significantly affected soil pH,exchangeable Na^(+),water soluble Ca^(2+)+Mg^(2+),water soluble Na^(+),and exchangeable sodium percentage in Teru and Yalo Districts(p<0.05).The invasion of Prosopis significantly increased soil pH(1.5%),but decreased exchangeable Na^(+)(24.2%),exchangeable sodium percentage(21.6%),and water soluble Ca^(2+)+Mg^(2+)(39.9%)than non-invaded lands.Clay content of Prosopis invaded lands was higher by 19%than non-invaded lands.However,sand content of soil was higher under non-invaded lands by 5.6%than Prosopis invaded lands.Most results indicated that invasion of Prosopis had positive effects on physicochemical properties and thus conducive for cereal crops and forages.

关 键 词：Phrase(s):invasion Open grazing lands PROSOPIS Rangelands reclamation Soil properties 

分 类 号：S15[农业科学—土壤学]