西北水电Issue(6)：7-11,17,6.DOI:10.3969/j.issn.1006-2610.2023.06.002
陕北黄土高原不同生态修复方式下土壤理化性状比较
Comparison of Soil Physicochemical Properties under Different Ecological Restoration Methods in Loess Plateau of Northern Shaanxi Province
摘要
Abstract
Taking Yuyang District of Yulin City,a typical semi-arid loess hilly and gully region,as the study area and soils restored with four different methods such as planting sea-buckthorn,caragana,natural recovery and grassland as the study object,the soil's physico-chemical properties are compared;the membership values of various fertility indicators are calculated and the soil quality index is adopted to evaluate the soil fertility status.The results revealed the following findings:as for soil moisture content in the soil at depth of 0～60 cm,the soil under sea-buckthorn and caragana is significantly higher than soil restored with other methods.There is no significant differ-ences in soil bulk density among the four soils under different vegetation types.Significant differences are observed in chemical properties among soils under different vegetation types.In the 0～20 cm and 40～60 cm soil layers,soil under sea-buckthorn displayed significantly higher pH,conductivity,and total phosphorus levels compared to soils under other vegetation types.Meanwhile,the alkali-hydrolyzed nitrogen content of soil under caragana is notably higher than that of soils with other vegetation types.In the20～40 cm soil layer,soil of natural grassland displayed significantly higher pH,soil under sea-buckthorn has higher electrical conductivity and higher total phosphor-us,and soil under caragana displayed higher alkali-hydrolyzed nitrogen levels compared to soils under other vegetation types.The soil quality index under different vegetation types followed the order of seabuckthorn(0.49)>caragana(0.46)>abandoned land(0.45)>grassland(0.34).关键词
黄土高原/生态修复/土壤质量Key words
loess plateau/ecological restoration/soil quality分类
农业科学引用本文复制引用
王瑞科,邓文婷,胥维纤,马欢..陕北黄土高原不同生态修复方式下土壤理化性状比较[J].西北水电,2023,(6):7-11,17,6.基金项目
陕西省自然科学基金(2021JQ-982). （2021JQ-982）
