文献类型：期刊文献

中文题名：不同抚育方式对人工幼林地水土流失的影响

英文题名：Effects of different tending techniques on the soil erosion andwater loss in young plantations

作者：李华[1,2] 郑路[1,2] 吴思达[1] 陈琳[1,2] 李朝英[1] 明安刚[1,2] 闵惠琳[1,2] 郝建[1]

第一作者：李华

机构：[1]中国林业科学研究院热带林业实验中心,广西凭祥532600;[2]广西友谊关森林生态系统国家定位观测研究站,崇左凭祥友谊关森林生态系统广西野外科学观测研究站,广西凭祥532600

年份：2024

卷号：22

期号：6

起止页码：96-105

中文期刊名：中国水土保持科学

外文期刊名：Science of Soil and Water Conservation

收录：CSTPCD;;北大核心:【北大核心2023】；CSCD:【CSCD_E2023_2024】；

基金：国家自然科学基金面上项目“近自然化改造提高松杉人工林土壤有机碳的作用机制”(32071764);政府间国际科技创新合作专项“森林生态系统韧性与质量提升技术模式”(2023YFE0105100-4);广西林业科技推广示范项目“广西松杉人工林近自然化改造与多功能提升关键技术研究与示范”(2024GXLK06);广西创新驱动发展专项资金项目“杉木人工林生态功能监测与增效研究”(桂AA17204087-8);中国林业科学研究院热带林业实验中心科学基金项目“割灌-块状抚育对人工幼林水土流失的抑制机理”(R L-2015-05)。

语种：中文

中文关键词：降雨特征;抚育方式;水土流失;炼山;广西南部

外文关键词：rainfall characteristics;tending techniques;soil erosion and water loss;control burning;southern Guangxi

分类号：S157.1

摘要：人工林皆伐炼山后林地水土流失严重,通过对不同抚育方式下人工幼林地水土流失的研究,为当地人工林的科学经营和生态管理提供依据。在广西南部马尾松采伐迹地炼山后,基于连续3 a的径流小区观测数据,对比研究割灌抚育和铲草抚育对林地水土流失的影响。结果表明:1)炼山后、在林地水土流失最为严重的前2年,割灌抚育年径流量分别是铲草抚育的65.4%和64.5%,年泥沙流失量分别是铲草抚育的46.9%和37.2%,降雨量、降雨强度大的月份,割灌抚育对水土流失的降低作用更为明显或显著(P<0.05),在炼山后的第3年、割灌抚育依然能显著降低抚育当月和全年的水土流失量;2)割灌抚育提高发生地表径流的最小降雨量,且随日降雨量的增加,水土流失量的增加幅度明显小于铲草抚育的。人工林皆伐炼山后,可通过抚育方式的改变来减少水土流失。
[Background]Soil erosion and water loss in the forest land after clear-cutting and control burning were serious,and it is the limiting factor of sustainable management of plantations.The young forest tending is one of the important measures of plantation management,which can promote the growth of young trees and accelerate the closure of young forest.Different tending techniques have different disturbance degrees to soil,can they effectively reduce soil and water loss in forest land?In this paper,the effects of different tending techniques on the soil erosion and water loss in young plantations after control burning were analyzed.[Methods]Two kinds of tending techniques(brush breaking tending and overall tending)were considered in a control burning site of 30-year-old Pinus massoniana plantation in southern Guangxi.Based on the fixed position observation of the 3 runoff plots of each tending techniques,the soil erosion and water loss were measured from^(2)018 to 2020.We compared the soil erosion and water loss,and analyzed the relationship between rainfall and runoff depth and sediment loss of the two different tending techniques.[Results]1)In the first two years after control burning in which the soil erosion and water loss was serious occurred,the annual volume of runoff of brush breaking tending plots were 65.4%and 64.5%of overall tending plots,respectively.The annual amount of sediment loss of brush breaking tending plots were 46.9%and 37.2%of overall tending plots,respectively.In rainy months,the soil erosion and water loss were more obvious or significant lower in the brush breaking tending plots than in the overall tending plots(P<0.05).In the third year after control burning,the brush breaking tending plots still significantly reduced the soil erosion and water loss in tending months and the whole year.2)Brush breaking tending treatment increased the minimum rainfall for surface runoff.With the increase of daily rainfall amount,the soil erosion and water loss were significantly lower in the brush breaking tending plots than in the overall tending plots.[Conclusions]In the clear-cutting and control burning site of southern Guangxi,it is effective to prevent soil erosion and water loss by changing tending techniques.