鼎湖山不同植被类型下土壤肥力质量变化
作者:
作者单位:

(1.南昌工程学院,江西省樟树繁育与开发利用工程研究中心,江西 南昌 330099;2.江西省农业科学院土壤肥料与资源环境研究所,江西 南昌 330200)

作者简介:

张杰(1983-),女,山东省济南市人,讲师,博士,主要从事土壤肥力演变等方面的研究。E-mail:mn_zhangjie@163.com。通讯作者:刘佳,E-mail:liujia422@126.com。

通讯作者:

基金项目:

基金项目:国家自然科学基金项目(31660599,41661052,31560582);江西省教育厅科技项目(GJJ151120)。


Changes of soil fertility quality under different vegetation types of Dinghushan in subtropical China
Author:
Affiliation:

(1.Nanchang Institute ofTechnology,Jiangxi Provincial Engineering Research Center for Seed -breeding and Utilizationof Camphor Trees,Nanchang Jiangxi330099;2. Soil and Fertilizer & Resources and Environment Institute,JiangxiAcademy of AgriculturalSciences,Nanchang Jiangxi330200)

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
    摘要:

    为探究我国南亚热带不同植被类型下土壤肥力质量变化,以鼎湖山国家自然保护区内 6种典型植被土壤为研究对象,通过野外调查取样与室内分析相结合的方法,系统考察了 14项土壤物理、化学和生物肥力指标,运用主成分分析、聚类分析对各植被类型的土壤肥力质量进行综合评价。结果表明:1)鼎湖山原始顶级植被群落阔叶林的土壤物理结构良好、化学养分充足、生物肥力最高;马尾松林土壤的物理、化学和生物肥力均严重退化,竹林和混交林土壤的各项肥力指标大多介于阔叶林和马尾松林之间。2)与阔叶林相比,施用有机肥可改善茶园土壤的容重、含水量、速效化学养分、pH和 CEC,但其全量化学养分仍大幅降低,且生物肥力也明显下降。3)主成分分析将 14个肥力指标降维为 2个主成分,累积方差贡献率达到 75.75%,基于主成分分析的各植被类型土壤肥力质量得分排序为:阔叶林(0.60)>老茶园(0.33)>新茶园(0.12)>竹林(0.04)>混交林(-0.01)>马尾松林(-1.08)。4)通过聚类分析可将鼎湖山不同植被类型的土壤肥力质量分为 4类:第Ⅰ类为阔叶林,第Ⅱ类为新、老茶园,第Ⅲ类为竹林和混交林,第Ⅳ类为马尾松林。综上,鼎湖山不同植被类型的土壤肥力质量显著不同,原始阔叶林被破坏后,各种新的植被类型都会使土壤肥力质量明显降低,但变化各异,建议针对不同的植被类型采取不同的调控管理措施,以恢复和提高土壤肥力质量。

    Abstract:

    In order to study the changes of soil fertility quality under different vegetation types in Dinghushan National NatureReserve,soils of six representative vegetation types were sampled,and 14 soil physical,chemical and biological indiceswere determined inlaboratory.Andthen,principal component analysis and cluster analysis were used to comprehensivelyevaluate the soil fertilityquality.The results showedthat:1)The soil in broad -leaved forest had good physicalstructure,sufficient chemical nutrients and the highest biological fertility;while the soilphysical,chemical and biological fertility in Pinus massonianaforest were seriouslydegraded,and most of the soil fertility indices in bamboo forest and mixed forest were between broad-leaved forest and Pinus massonianaforest.2)Compared with broad -leavedforest,application of organicfertilizer improved the bulk density,water content,available chemical nutrients,pH and CEC of tea garden soils,butsoil total chemical nutrients were still obviouslydecreased.Moreover,the biological indicators of tea garden soils were alsodecreased obviously.3)Principal component analysis transformed 14 fertility indices into 2 principal components by data dimensionality reduction,and the 2 principal components explained 75.75% of the totalvariance.The soil fertility qualityscores under different vegetation types based on principal component analysis were ranked as follows:broad -leaved forest(0.60)>old teagarden(0.33)>new teagarden(0.12)>bambooforest(0.04)>mixedforest(-0.01)> Pinus massonianaforest(-1.08).4)The soil fertility quality under different vegetation types in Dinghushan could be divided into4 groups by clusteranalysis:(Ⅰ)broad -leavedforest,(Ⅱ)tea garden,(Ⅲ)bamboo forest and mixedforest,(Ⅳ) Pinus massonianaforest.In conclusion,the soil fertility quality under different vegetation types in Dinghushan showedsignificantly different.The shifts of vegetation types from natural broad -leaved forest to other types would lead to decreasesoil fertility quality,but with varyingvariations.Therefore,it is suggested that different control and management measures should be adopted for different vegetation types to restore and improve soil fertility quality.

    参考文献
    相似文献
    引证文献
引用本文

张杰,金志农,张海燕,赵姣,肖昌龙,张北红,刘佳.鼎湖山不同植被类型下土壤肥力质量变化[J].中国土壤与肥料,2020,(6):50-57.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
历史
  • 收稿日期:2019-11-19
  • 最后修改日期:
  • 录用日期:2020-01-04
  • 在线发布日期: 2021-01-21