水土保持研究2025，Vol.32Issue(3)：55-62,8.DOI:10.13869/j.cnki.rswc.2025.03.025
南方丘陵柑橘园水保效益及土壤有机碳储量
Soil and water conservation benefits and soil organic carbon storage in southern hilly citrus orchards
摘要
Abstract
[Objective]The study explores the response of soil and water conservation benefits and soil physical and chemical properties to different soil and water conservation measures,quantifies the relationship between soil organic carbon storage and influencing factors,and proposes the optimal planting measures for maximizing comprehensive soil and water conservation and carbon sequestration benefits in southern hilly citrus orchards.This aims to provide data and theoretical support for the scientific evaluation of carbon sequestration benefits from comprehensive soil and water conservation management.[Methods]Three typical soil and water conservation planting methods,including conventional planting(CG),straw mulching planting(FC)and terrace planting(TD),were selected as the research objects in the Huyou citrus orchards in Changshan County,Quzhou City,Zhejiang Province,with bare slope land(LD)serving as the control.Runoff and soil loss of different treatments were monitored for 9 years,and soil samples of 0-10 cm and 10-30 cm layers were collected.Soil and water conservation benefits,aggregate particle size composition,soil organic carbon content,and their correlation were analyzed.[Results](1)Under various soil and water conservation measures,the soil and water conservation benefits were ranked as FC>CG>TD>LD.(2)Compared with LD,soil organic carbon storage in 0-10 cm soil layer increased by 97.70%～207.91%,showing the order FC>CG>TD,while in 10-30 cm soil layer increased by only 42.72%～66.92%,with significant differences between layers(p<0.05).(3)Soil particles were mainly distributed in the particle size of 0.25～2.00 mm,in which the organic carbon storage of medium aggregates(0.05～2 mm)was the largest and the clay was the least.The difference in organic carbon storage of aggregate particle size components was the most significant in micro-aggregates(p<0.05),which showed FC>TD>CG.(4)Soil erosion factors and aggregate size fractions had a total negative impact on soil organic carbon storage(-0.83,-0.24),while soil nutrients had a total positive impact on soil organic carbon storage(1.03).[Conclusion]Soil erosion factors indirectly influence soil organic carbon storage by impacting soil nutrients.The proportion of large aggregates in aggregate components has a direct negative impact on soil organic carbon storage.Mulching planting has the best effect on improving soil and water conservation benefits and maintaining soil carbon pool stability in citrus orchards in the hilly regions of southern China,and can be promoted in future planting practices.关键词
南方丘陵/水保效益/团聚体/土壤养分/有机碳储量Key words
southern hills/soil and water conservation benefits/aggregates/soil nutrients/organic carbon storage分类
农业科技引用本文复制引用
唐张轩,钟壬琳,叶子豪,林子墨,庄需印,吴家森..南方丘陵柑橘园水保效益及土壤有机碳储量[J].水土保持研究,2025,32(3):55-62,8.基金项目
百山祖国家公园科学研究项目(2021ZDLY01) （2021ZDLY01）
浙江省大学生科技创新活动计划(2023R412008) （2023R412008）
