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

作　　者：唐张轩 钟壬琳 叶子豪 林子墨 庄需印 吴家森[1] Tang Zhangxuan;Zhong Renlin;Ye Zihao;Lin Zimo;Zhuang Xuyin;Wu Jiasen(College of Environment and Resource Sciences,Zhejiang A&F University,Hangzhou 311300,China;Water Resources Management Center of Zhejiang Province,Hangzhou 310020 China;Soil and Water Conservation Scientific Experimental Station of Changshan County,Quzhou,Zhejiang 324200,China)

机构地区：[1]浙江农林大学环境与资源学院,杭州311300 [2]浙江省水资源水电中心,杭州310020 [3]常山县水土保持科学试验站,浙江衢州324200

出　　处：《水土保持研究》2025年第3期55-62,共8页Research of Soil and Water Conservation

基　　金：百山祖国家公园科学研究项目(2021ZDLY01);浙江省大学生科技创新活动计划(2023R412008)。

摘　　要：[目的]探讨南方丘陵柑橘园水保效益及土壤理化性质对不同水保措施的响应程度以及土壤有机碳储量与影响因子的量化关系,提出南方丘陵柑橘园水保及固碳综合效益最优的种植措施,以期为科学评估水土保持综合治理的碳增汇效益提供数据支撑和理论支持。[方法]选取浙江省衢州市常山县胡柚园常规种植(CG)、覆草种植(FC)、梯地种植(TD)3种典型水保种植方式作为研究对象,以裸露坡地(LD)为对照,监测不同处理9年的径流量和土壤流失量,采集不同处理0—10 cm,10—30 cm土壤样品,分析了土壤水保效益、团聚体粒径组分、土壤有机碳含量及其相关性。[结果](1)不同水保措施下,保土效益和保水效益均表现为FC>CG>TD>LD。(2)与LD相比,土壤有机碳储量在0—10 cm土层提高了97.70%~207.91%,具体表现为FC>CG>TD,而10—30 cm土层则提高了42.72%~66.92%,两土层间差异显著(p<0.05)。(3)土壤颗粒主要集中分布于0.25~2.00 mm粒径,其中以中团聚体(0.05~2 mm)有机碳储量最多,黏粒最少,不同措施间团聚体粒径组分有机碳储量差异以微团聚体最为显著(p<0.05),表现为FC>TD>CG。(4)水土流失因子和团聚体粒径组分对土壤有机碳储量具有总的负向影响(-0.83,-0.24),而土壤养分对土壤有机碳储量则具有总的正向影响(1.03)。[结论]水土流失因子通过影响土壤养分而间接影响土壤有机碳储量;团聚体组分中大团聚体的占比对土壤有机碳储量的影响有直接的负影响。覆草种植对提高南方丘陵地区柑橘园水保效益及维持土壤碳库稳定性的效果最好,在未来的种植中可进行推广。[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 soi

关 键 词：南方丘陵 水保效益 团聚体 土壤养分 有机碳储量 

分 类 号：S278[农业科学—农业水土工程]