| 攸县3种不同水土保持林土壤抗侵蚀性能 |
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| 引用本文： | 郑茂,吴立潮,徐杰,何介南,康文星. 攸县3种不同水土保持林土壤抗侵蚀性能[J]. 湖南林业科技, 2016, 0(3): 37-42. DOI: 10.3969/j.issn.1003-5710.2016.03.007 |
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| 作者姓名： | 郑茂 吴立潮 徐杰 何介南 康文星 |
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| 作者单位： | 1. 中南林业科技大学,湖南长沙,410004;2. 中南林业科技大学，湖南长沙 410004; 南方林业生态应用技术国家工程实验室，湖南长沙 410004 |
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| 基金项目： | 湖南省水利厅科技计划项目([2011]237－20)“典型红壤丘陵区水土保持生物调控机制研究”资助。 |
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| 摘 要： | 为了研究湖南省攸县境内的不同水土保持林对土壤抗侵蚀性能的影响,本文从林地土壤的物理性状、土壤抗蚀性能和土壤抗冲性能3个方面来进行对比研究。测定其林地0~20 cm层土壤的容重、孔隙度、水稳定指数、渗透系数、土壤团聚体占土样百分比和抗冲指数几个指标,进而分析不同林分类型之间的林地土壤抗侵蚀性能的差异。结果表明:从土壤的物理性状来看,楠+桤木+枫香混交林的容重和孔隙度均比其他两种林分要好;从土壤的抗蚀性能来看,3种不同林分的水稳性指数大小按照大小顺序为楠+桤木+枫香混交林枫香+栾树+桤木混交林杉木+柏木+马尾松混交林,楠+桤木+枫香混交林的渗透性能优于杉木+柏木+马尾松混交林和枫香+栾树+桤木混交林,且3种林分的水稳性指数与渗透系数均大于荒坡地;从土壤抗冲性能来看,土壤总团聚体占土样百分比和土壤抗冲指数按照楠+桤木+枫香混交林枫香+栾树+桤木混交林杉木+柏木+马尾松混交林的大小排列顺序,且指标均大于荒坡地。
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| 关 键 词： | 石灰岩红壤 土壤抗冲性能 土壤抗蚀性能 水土保持林 |
Comparison of soil anti-erodibility of 3 types soil and water conservation forest in Youxian County |
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| Abstract: | This article studied soil anti-erodibility of different soil and water conservation forest in Youxian County,Hu-nan Province by comparing physical character of forestry soil ,soil anti-scourability and soil anti-erodibility.To analysis the differences of soil anti-erodibility of three types forestry,we measured soil bulk density,soil proosity,water stable index,soil permeability coefficient,soil aggregate of 0~20 cm forestry soil.The results showed that,the soil bulk den-sity and soil proosity of Phoebe zhennan S.Lee+Alnus cremastogyne Burk+Liquidambar formosana Hance mixed forests were better than the other two stands;water stable index of three types forestry decreased in this order:Phoebe zhennan S.Lee +Alnus cremastogyne Burk +Liquidambar formosana Hance mixed forests >Liquidambar formosana Hance +Koelreuteria elegans+Alnus cremastogyne Burk mixed forests >Cunninghamia lanceolata+Cupressus funebris Endl. +Pi-nusm assoniana mixed forests,soil permeability coefficient of Phoebe zhennan S.Lee+Alnus cremastogyne Burk+Liq-uidambar formosana Hance mixed forests was better than the others.What’s more,water stable index and soil permeabil-ity coefficient of the three types forestry were better than bare slope land.From the performance point of view of soil anti-scourability,soil total aggregate percentage accounted for soil samples and soil anti-scourability index decreased in this order:Phoebe zhennan S.Lee+Alnus cremastogyne Burk+Liquidambar formosana Hance mixed forests >Liquidambar formosana Hance+Koelreuteria elegans+Alnus cremastogyne Burk mixed forests >Cunninghamia lanceolata+Cupressus funebris Endl. +Pinusm assoniana mixed forests ,and they were greater than bare slope land. |
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| Keywords: | limestone red-soil soil anti-scourability soil anti-erodibility soil and water conservation forest |
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