南京林业大学学报（自然科学版）2024，Vol.48Issue(3)：117-124,8.DOI:10.12302/j.issn.1000-2006.202304015
基于CSLE模型的大连市果园土壤侵蚀特征研究
The spatio-temporal characteristics of soil erosion in orchards of Dalian City based on the CSLE model
摘要
Abstract
[Objective]The orchards in Dalian City suffer from soil erosion due to vigorous developmental activities.This study aimed to quantitatively analyze the status of soil erosion,determine the spatio-temporal characteristics of soil erosion in orchards in Dalian City,and explore the key factors that influence soil erosion.The results can provide significant insights for the healthy development and ecological protection of the orchard industry in Dalian City.[Method]The characteristics of soil erosion in orchards in Dalian City were assessed by using the Chinese soil loss equation(CSLE)model,based on geographic big data available online.The results were visually interpreted,and the dynamic changes and factors influencing soil erosion in the study area were subsequently analyzed.[Result]The area of soil erosion constituted approximately 40％of the total area of Dalian City,and the erosion was serious in the northern and southern mountainous and hilly regions.The average soil erosion modulus of the orchards in Dalian City was 1 230.29,1 150.95,2 311.36,6 384.55,3 399.60 and 3 484.24 t/(km2·a)in 2015,2016,2017,2018,2019 and 2020,respectively.Analysis of the intensity of soil erosion primarily revealed micro and slight erosion.Strong and above grade erosion was primarily observed in Ganjingzi,Jinzhou,and Lüshunkou District.Soil erosion was primarily observed in slope grades below 25° and in regions with rainfall grades ranging between 500 and 900 mm.The finding revealed that greenhouse coverage could reduce soil erosion in greenhouse orchards and open field/facility orchards,and vegetation coverage could effectively reduce soil erosion in open field orchards.[Conclusion]Soil erosion in the orchards in Dalian City exhibits obvious spatial distribution characteristics in that the intensity of erosion is high in the south and low in the north area.The successful control of soil erosion in orchards and the efficient promotion and sustainable development of the orchard industry can be achieved in future by increasing the area of greenhouse coverage,increasing the vegetation coverage of outdoor greenhouses,and selecting the location of orchards reasonably.关键词
土壤侵蚀/土壤侵蚀模数/CSLE模型/设施大棚/大连市果园Key words
soil erosion/soil erosion modulus/CSLE model/facility greenhouse/orchard of Dalian City分类
农业科技引用本文复制引用
纪昕雨,于悦,张思帆,刘媛媛..基于CSLE模型的大连市果园土壤侵蚀特征研究[J].南京林业大学学报（自然科学版）,2024,48(3):117-124,8.基金项目
辽宁省教育厅科学研究项目(LQ2019028) （LQ2019028）
辽宁师范大学2020高端科研成果培育计划(GD20L003). （GD20L003）
