西南林业大学学报2024，Vol.44Issue(9)：93-100,8.DOI:10.11929/j.swfu.202307029
土地利用方式对峰丛洼地石漠化区土壤酶活性及肥力的影响
Effects of Land Use Patterns on Soil Enzyme Activity and Fertility in Rocky Desertification Area of Peak-cluster Depression
摘要
Abstract
Three enzyme indexes of soil sucrase,urease and phosphatase and 5 fertility indexes of organic matter,total nitrogen,total phosphorus,alkali-hydrolyzable nitrogen and available phosphorus in different land use patterns in typical peak-cluster depression area were selected.Soil enzyme index method(SEI)and soil fertil-ity index method(IFI)were used to study soil enzyme activity and fertility in rocky desertification area.The find-ings indicated that there were significant differences in enzyme activities of different land use modes,and the range of soil sucrase,urease and phosphatase activities in different land use modes was 20.15-40.05 mg/(g·24 h),32.05-109.59 mg/(g·24 h),0.81-1.06 mg/(g·24 h),the changes of soil enzyme index were as follows:shrub grass-land(0.581)＞arbor shrub grassland(0.517)＞maize field(0.479)＞kiwifruit land(0.381)＞walnut land(0.369)＞wasteland(0.348);there were significant differences in soil fertility between different land use methods,and the contents of organic matter,alkaline hydrolyzable nitrogen,total nitrogen,total nitrogen,total phosphorus and available phosphorus in different land use methods were 27.96-76.25 g/kg,99.40-263.45 mg/kg,1.002-2.35 g/kg,0.41-1.19 g/kg,4.67-21.73 mg/kg,the changes of soil comprehensive fertility index were as follows:barren land(0.978)＞shrub grassland(0.868)＞maize field(0.733)＞walnut field(0.665)＞arbor shrub grassland(0.476)＞kiwi land(0.421);in addition to kiwifruit field,there was a significant correlation between soil enzyme activity and fertility in other land use modes in the rocky desertification area of the peak-cluster depression(P＜0.05).In order to restore and rationally use the land in the rocky desertification area of the peak-cluster depression,human interference should be minimized for abandoned land.For shrub grassland,arbor-shrub grassland,corn land,wal-nut land,and kiwifruit land with human intervention,reasonable artificial measures can be applied to improve soil quality.Shrub grassland can be used as a priority land use type in the ecological restoration process of the rocky desertification area of the peak-cluster depression.关键词
峰丛洼地/石漠化/土地利用/酶活性/土壤肥力/相关性/综合指数Key words
peak-cluster depression/rocky desertification/land use/enzymatic activity/soil fertility/correla-tion/composite index分类
林学引用本文复制引用
刀明宽,刘云根,王妍,姚平,邵晗,张水琳,马丽娜,张凌恺..土地利用方式对峰丛洼地石漠化区土壤酶活性及肥力的影响[J].西南林业大学学报,2024,44(9):93-100,8.基金项目
国家自然科学基金项目(32260420)资助 （32260420）
云南省科技计划项目(202001AT070115)资助 （202001AT070115）
云南省教育厅科学研究基金项目(2023Y0711,2020Y0388)资助. （2023Y0711,2020Y0388）
