草业学报2017，Vol.26Issue(3)：65-74,10.DOI:10.11686/cyxb2016233
黄土丘陵沟壑区欧李栽植对土壤质量改良作用的评价
Improvement of soil quality by Chinese dwarf cherry cultivation in the Loess Plateau steep hill region
摘要
Abstract
In the process of ecological restoration in the Loess Plateau hilly gully region,selection of species for planting is important.Recently,Chinese dwarf cherry (Cerasus hum ilis) has been used for vegetation restoration in this region,but its ecological impact needs to be systematically evaluated.In this study,5-year-old plantings of Chinese dwarf cherry and Chinese pine (Pinus tabulaeformis) on level terraces near Liuyu town in Liulin county,Shanxi province,in the steep hill region of the Loess Plateau were compared.Soil samples were collected from 20 and 40 cm depth under the canopy of Chinese dwarf cherry bushes (UCC20,UCC40) and from the same soil depths at inter-row sites (IRC20,IRC40),and corresponding samples were collected from P.tabulaeformis plantations (designated UCP20 & UCP40),to compare the effects of the two plant species on soil properties.It was found that:1) compared with inter-row soil in Chinese dwarf cherry (IRC20 and IRC40),the pH values,nutrient contents (except available phosphorus) and enzyme activity values (except catalase activity for UCC40) were improved to differing degrees;2) planting with Chinese dwarf cherry (C) or pine (P) each had their own respective advantages.Alkali-hydrolysable nitrogen,total phosphorus content and enzyme activities of soil under the canopy of C (UCC20 and UCC40) were superior to those of P plantations (UCP20 and UCP40),while soil water content,electrical conductivity and other nutrient levels under the canopy of C were reduced compared to those under P.Results of a principal component analysis indicated that key factors for differentiation between different soil samples were,in descending order,invertase activity,organic matter content,pH value,total phosphorus,alkali-hydrolysable nitrogen and alkaline phosphatase activity.Mean scores for principal component 1 ranked in descending order:UCC20,UCP20,UCC40,IRC20,UCP40 and IRC40.In summary,the cultivation of Chinese dwarf cherry significantly enhanced comprehensive soil quality of the Loess Plateau steep hill region.关键词
土壤养分/土壤酶活性/根际/植被恢复/主成分分析Key words
soil nutrients/soil enzyme activities/rhizosphere/vegetation restoration/principal component analysis引用本文复制引用
王鹏飞,贾璐婷,杜俊杰,张建成,穆霄鹏,丁伟..黄土丘陵沟壑区欧李栽植对土壤质量改良作用的评价[J].草业学报,2017,26(3):65-74,10.基金项目
山西省科技重大专项(20121101010)和山西省科技基础条件平台建设项目(2013091004-0101)资助. （20121101010）
