燕北山区板栗林地抗蚀抗冲性能及其临界坡长  

Soil Erosion Resistance of Chestnut Forest in Yanshan Mountainous Area and Its Critical Slope Length

作　　者：丁新辉 冯筱 田琴 张俊俊 刘孝盈[2] 刘广全[2] DING Xinhui;FENG Xiao;TIAN Qin;ZHANG Junjun;LIU Xiaoying;LIU Guangquan(School of Geography and Environment,Xianyang Normal University,Xianyang 712000,Shaanxi,China;China Institute ofWater Resources and Hydropower,Beijing 100048,China)

机构地区：[1]咸阳师范学院地理与环境学院,陕西咸阳712000 [2]中国水利水电科学研究院,北京100048

出　　处：《咸阳师范学院学报》2023年第4期41-45,共5页Journal of Xianyang Normal University

基　　金：国家自然科学基金项目(U2243210);陕西省自然科学基础研究计划项目(2022JQ176)。

摘　　要：以新开垦(新)板栗林地作对比,对开垦多年的(老)板栗林地水平阶和坡面进行抗蚀抗冲性研究。结果表明:新老板栗林土壤物理性质差异显著,老板栗林土壤稳渗率和有机质含量均低于新板栗林;随着经营年限的增加,老板栗林土壤抗蚀和抗冲能力下降明显,主要与林下无植被覆盖,土壤中无根系固结有关;坡度为28度时,新老板栗林地的临界坡长分别为8.8 m和3.3 m,老板栗林极易发生水土流失;考虑到工程措施造价高昂,结合新板栗林的经营方式,对老板栗林进行间伐,种植一些农作物或者灌木当作绿肥,以改良板栗林土壤性质,提升抗蚀抗冲能力。Compared with the newly cultivated(New)chestnut forest land,and to study the soil erosion resistance of the reclaimed(Old)chestnut forest land level bench and slope.The results showed that:Differences in soil physical properties of the old and new chestnut forest is significant,the soil infiltration rate and the content of organic matter of the old chestnut forest was lower than the new chestnut forest;with the increase of operating time,the soil erosion resistance of the old chestnut forest decreased significantly,which was mainly related to the non-vegetation cover and no thin root in the soil;When the slope is 28 degrees,the critical slope length of the old and new chestnut forest is 3.3 m and 8.8 m,and the soil erosion of the old chestnut forest is very easy to occur;taking the cost of the project into account,combined with the new chestnut forest management mode,thinning the old chestnut forest,and planting some crops or shrubs as green manure,make the chestnut forest management become sustainable.

关 键 词：板栗林 抗蚀性 抗冲性 临界坡长 

分 类 号：S664.2[农业科学—果树学]