南京老山国家森林公园4种林分类型土壤的抗侵蚀性能评价  

Evaluation on Soil Anti-erosion of Four Forest Types in Laoshan National Forest Park in Nanjing

作　　者：徐慧[1] 管蓓[1] XU Hui;GUAN Bei(Nanjing Research Institute of Environmental Protection, Nanjing 210013, China)

机构地区：[1]南京市环境保护科学研究院,江苏南京210013

出　　处：《浙江林业科技》2017年第3期17-22,共6页Journal of Zhejiang Forestry Science and Technology

基　　金：南京市重金属污染现状及防治对策研究(201104)

摘　　要：2015年,以江苏省南京老山国家森林公园的杜仲Eucommia ulmoides林,麻栎Quercus acutissima林,毛竹Phyllostachys heterocycla‘Pubescens林’,黑松Pinus thunbergii林4种林分类型为研究对象,建立样方对其不同层次土壤进行测定。选取土壤容重、有机质含量、团聚体特征、抗剪切强度等15个指标来评估不同林分土壤的抗侵蚀性能。结果表明,相比其他3种林型,麻栎林在诸多指标上均表现最优;基于主成分分析法对15个指标进行筛选,其中有机质含量、内摩擦角、粉粒含量、砂粒含量可以作为评价研究区土壤抗侵蚀性能的最优指标;基于最优指标和加权平均法对各林分土壤抗侵蚀性能进行综合评价,结果表明麻栎林表层土壤的抗侵蚀性能最强,其次为杜仲林,再次为黑松林,毛竹林最弱。Sample plots were established in Eucommia uloides,Quercus acutissima,Phyllostachys heterocycla'Pubescens'and Pinus thunbergii stands of Laoshan National Forest Park in Nanjing,Jiangsu province in2015.Determinations were carried out on15soil indicators at different layersof the stands.Soil anti-erosion of different types of forest was evaluated by15measured indicators,such as bulk density,organic matter content,aggregate properties,etc.The results demonstrated that Q.acutissima forest had better performance than the other three forests.Principal component analysis on15indicators indicated that organic matter content,internal friction angle,fines content and sand content could be selected for evaluation indicators for soil anti-erosion.Comprehensive evaluation on soil anti-erosion of sampled stands by selected indicators and method of weighted mean resulted that the surface soil anti-erosion at Q.acutissima forest was the best,followed by E.uloides,P.thunbergii and Ph.heterocycla'Pubescens'.

关 键 词：南京 老山 林分类型 土壤抗侵蚀性能 主成分分析 

分 类 号：S759.91[农业科学—森林经理学] S714[农业科学—林学]