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
发布时间：2018-09-18 09:39
【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。
[Abstract]:In 2015, four forest types of Eucommia ulmoides forest, Quercus acutissima forest, Phyllostachys pubescens Phyllostachys heterocycla'Pubescens forest and black pine Pinus thunbergii forest in Laoshan National Forest Park, Jiangsu Province, were studied. Soil bulk density, organic matter content, aggregate characteristics and shear strength were selected to evaluate the soil erosion resistance of different stands. The results showed that, compared with the other three forest types, Quercus acutissima forest had the best performance on many indexes, and selected 15 indexes based on principal component analysis, including organic matter content, internal friction angle, silt content, etc. The sand content can be used as the best index to evaluate the soil erosion resistance in the study area, and based on the optimal index and the weighted average method, the soil erosion resistance of each stand is evaluated. The results show that the surface soil of Quercus acutissima forest has the strongest resistance to erosion. Next is the Eucommia ulmoides forest, again is the black pine forest, the Phyllostachys pubescens forest is the weakest.
【作者单位】： 南京市环境保护科学研究院;
【基金】：南京市重金属污染现状及防治对策研究(201104)
【分类号】：S714.7
本文编号：2247510
[Abstract]:In 2015, four forest types of Eucommia ulmoides forest, Quercus acutissima forest, Phyllostachys pubescens Phyllostachys heterocycla'Pubescens forest and black pine Pinus thunbergii forest in Laoshan National Forest Park, Jiangsu Province, were studied. Soil bulk density, organic matter content, aggregate characteristics and shear strength were selected to evaluate the soil erosion resistance of different stands. The results showed that, compared with the other three forest types, Quercus acutissima forest had the best performance on many indexes, and selected 15 indexes based on principal component analysis, including organic matter content, internal friction angle, silt content, etc. The sand content can be used as the best index to evaluate the soil erosion resistance in the study area, and based on the optimal index and the weighted average method, the soil erosion resistance of each stand is evaluated. The results show that the surface soil of Quercus acutissima forest has the strongest resistance to erosion. Next is the Eucommia ulmoides forest, again is the black pine forest, the Phyllostachys pubescens forest is the weakest.
【作者单位】： 南京市环境保护科学研究院;
【基金】：南京市重金属污染现状及防治对策研究(201104)
【分类号】：S714.7
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