摘要
为了研究不同土地利用方式与土壤肥力和土地退化的关系,以内蒙古黄土丘陵区为对象,选取耕地、草地、撂荒地、灌木林地和乔木林地5种土地利用类型的9个土壤理化指标,计算了不同土地利用类型的土壤肥力综合指数及土壤退化指数。结果表明:研究区内不同土地利用类型的土壤指标均存在显著性差异。5种土地利用类型的土壤肥力综合指数得分为耕地>草地>灌木林地>乔木林地>撂荒地。撂荒地和乔木林地土壤退化指数为负值;灌木林地和耕地土壤退化指数为正值。不同土地利用对土壤肥力影响不同,土壤肥力综合指数与土壤退化指数存在良好的线性关系。
In order to study the relationship between different land use patterns and soil fertility and land degradation,the loess hilly area of Inner Mongolia was used as the object,nine soil physical and chemical indicators of five kinds of land use types including cultivated land,grassland,abandoned land,shrub land and arbor forest woodland were selected.The study calculated the soil fertility composite index and the soil degradation index of different land use types.The results showed that there were significant differences in soil indicators among different land use types.The comprehensive index scores of soil fertility of five land use types were as follows,cultivated land>grassland>shrub land>arbor woodland>abandoned land.The soil degradation index of abandoned land and tree woodland were negative,the soil degradation index of shrub woodland and cultivated land were positive.Different land uses had different influence on soil fertility,it had a good linear relationship between soil fertility comprehensive index and soil degradation index.
作者
李晓琴
秦富仓
郑硕
杨振奇
LI Xiaoqin;QIN Fucang;ZHENG Shuo;YANG Zhenqi(College of Desert Control Science and Engineering,Inner Mongolia Agricultural University.Hohhot,Inner Mongolia 010019)
出处
《北方园艺》
CAS
北大核心
2019年第24期102-110,共9页
Northern Horticulture
基金
全球环境基金资助项目(GEF-NMG-2016001)
