干旱区研究2024，Vol.41Issue(10)：1789-1796,8.DOI:10.13866/j.azr.2024.10.16
不同土地利用方式对农田土壤有机碳组分及土壤微生物量碳的影响
Effects of different land-use methods on the organic carbon composition and soil microbial biomass carbon of farmland soil
摘要
Abstract
Investigating the content characteristics of organic carbon components and microbial biomass carbon in farmland soil under different land-use methods is of considerable significance for guiding the rational utiliza-tion and management of soil resources in the Ili River Valley.By combining field investigations,sample collec-tion,indoor analysis,and geostatistics,this study explored the content characteristics of soil SOC,POC,DOC,LFOC,EOC,and MBC in five land-use types,including dryland,irrigated land,paddy field,orchard,and aban-doned land in the Ili River Valley.This study compared and analyzed the effects of land-use changes on soil or-ganic carbon components and microbial biomass carbon in farmland in the Ili River Valley.Results showed that the contents of TN,AN,AP,and AK in soil were in the order of paddy field＞irrigated land＞dryland＞orchard＞fal-low land.The nutrient content of paddy soil was significantly higher than that of the other four land-use types.The soil SOC content showed significant differences,primarily reflected in paddy fields(25.62 g·kg-1)＞dryland(13.80 g·kg-1)＞irrigated land(12.19 g·kg-1)＞orchards(11.58 g·kg-1)＞abandoned land(8.81 g·kg-1),and all reached a significant difference level(P＜0.05).The contents of soil SOC,DOC,POC,LFOC,and MBC showed the characteristics of paddy field＞dryland＞irrigated land＞orchard＞abandoned land,with significant differences.The EOC content showed the characteristics of paddy field＞irrigated land＞dryland＞orchard＞abandoned land,with significant differences.The contents of SOC,DOC,POC,LFOC,MBC,and EOC in paddy soil were signifi-cantly higher than those in the other four land-use types.A highly significant positive correlation was detected be-tween soil SOC and POC,LFOC,and DOC in the five land-use types,with the correlation coefficients being 0.622,0.36,and 0.489,respectively(P＜0.01),indicating that soil SOC content is an important factor affecting soil particulate organic carbon,light organic carbon,and soluble organic carbon contents.关键词
土地利用方式/农田土壤/有机碳组分/微生物量碳/伊犁河谷Key words
land use mode/farmland soil/organic carbon fraction/microbial biomass carbon/Ili River Valley引用本文复制引用
李娜,信会男,赖宁,李永福,吕彩霞,耿庆龙,段婧婧,陈署晃..不同土地利用方式对农田土壤有机碳组分及土壤微生物量碳的影响[J].干旱区研究,2024,41(10):1789-1796,8.基金项目
新疆农业科学院自主培育项目"不同土地利用方式对土壤有机碳组分及土壤微生物量碳氮的影响"(nkyzzkj-013) （nkyzzkj-013）
新疆农业科学院农业科技创新稳定支持专项课题(xjnkywdzc-2023002) （xjnkywdzc-2023002）
中央引导地方科技发展专项资金项目(YDZX20186500001910) （YDZX20186500001910）
