生态环境学报2026，Vol.35Issue(8)：1246-1255,10.DOI:10.16258/j.cnki.1674-5906.2026.08.008
基于间歇性人工降雨的灯塔盆地山地茶园土壤侵蚀试验研究
Experimental Study on Soil Erosion in Mountain Tea Plantations of the Dengta Basin Based on Intermittent Artificial Rainfall
摘要
Abstract
[Objective]The Dengta Basin in Heyuan,Guangdong,has extensive tea plantation areas and faces severe soil erosion problems.This study aims to investigate the soil erosion characteristics of mountainous tea plantations in this region under different slope management practices.[Methods]This study employed intermittent artificial rainfall simulation experiments(15° slope,70 mm·h-1 rainfall intensity)and established three slope treatments—bare soil,rice(Oryza sativa L.)straw mulch,and early-stage planting(Vicia dasycarpa Ten.)—for observation.[Results]Straw mulch significantly reduced runoff and sediment loss;its total runoff(33.3 L)was 10.4%less than that of bare soil and the early-stage planting treatment(both 37.2 L),and its total eroded sediment(20.4 g)was only 21.1%of that from bare soil(96.6 g)and 12.5%of that from the early-stage planting treatment(164 g).Erosion was most severe in the early planting treatment,with total sediment loads 1.69 times and 8.02 times those of bare soil and straw mulch,respectively,and sediment yield ranging from 2.42 to 6.91 g·m-2·min-1—far higher than those of bare soil and straw mulch.The dynamics of sediment yield differed markedly among the three treatments:the sediment yield of bare soil initially rose rapidly before stabilizing with slight fluctuations;the erosion rate under straw mulch showed an overall downward trend and stabilized in the later stages;although the erosion rate during the early planting stage decreased over time,it remained at the highest level throughout.The cumulative runoff and sediment volumes for all three slope treatments exhibited a good linear relationship with time(R2＞0.99),while the sediment loss during specific time periods showed significant linear and quadratic relationships with runoff and rainfall,respectively(R2＞0.78).[Conclusion]Straw mulching can effectively reduce soil and water loss in tea plantations in this region,whereas during the early stages of planting,significant surface disturbance and low vegetation cover actually exacerbate erosion.The findings of this study provide a scientific basis for soil and water conservation efforts in tea plantations in the Dengta Basin.关键词
人工降雨/间歇性/土壤侵蚀/灯塔盆地/茶园Key words
artificial rainfall/intermittent/soil erosion/Dengta Basin/tea plantations分类
农业科技引用本文复制引用
张宇婷,孙健,唐文德,袁再健,廖义善,王赢利..基于间歇性人工降雨的灯塔盆地山地茶园土壤侵蚀试验研究[J].生态环境学报,2026,35(8):1246-1255,10.基金项目
国家自然科学基金项目(42377349) （42377349）
梅州市科技计划项目(2025A03032006) （2025A03032006）
2021 年校级科技重点项目(2021KJZ05) （2021KJZ05）
2024-2025广东省科学技术厅第二轮"百千万工程"农村科技特派员重点派驻项目(KTP20240302) （KTP20240302）
2024 年广东省质量工程项目(ZLGC2024116) （ZLGC2024116）
2024 年校级科产教基地项目(ZLGC2024401) （ZLGC2024401）
