不同干扰措施下黄土丘陵区人工刺槐林生长结构及土壤理化性质分析
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

陕西省科学院科技计划重点项目“陕北黄土丘陵区植被恢复及动植物多样性保护关键技术”(2008k-04);中国科学院百人计划项目“黄土高原半干旱区群落水分平衡与调控机理”(kzcx2-yw-BR-02)


Soil Physio-Chemical Properties and Growth Structure with Different Interfering Measures in Robinia Pswudoacacia Forests in Loess Hilly Region
Author:
Affiliation:

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
  • |
  • 文章评论
    摘要:

    为合理经营管理人工刺槐林,提高其稳定性,通过野外调查与室内分析相结合的方法,对不同干扰措施下林龄为30a左右的刺槐×柠条,刺槐×油松,刺槐×连翘等3种混交林中刺槐与33龄刺槐纯林的生长指标、土壤理化性质及林下植物多样性进行了分析。结果表明,不同的抚育管理方式对混交林和纯林中刺槐乔木的密度影响较小,刺槐通过无性繁殖自我修复,密度均维持在1000~1500株/hm2;纯林中乔木蓄积量显著高于3种混交林;纯林径阶主要分布在8~16cm,占样地内刺槐的79.31%,混交林主要分布在2~12cm,占样地内刺槐的82.58%左右;纯林内刺槐胸径与其树冠的投影面积相关系数r=0.385,混交林内的刺槐为r=0.735,混交林内刺槐树形结构好于纯林;纯林对土壤容重、有机质的改善作用差于混交林,混交林中以刺槐×柠条林改善土壤容重作用最显著,纯林和混交林在0—5cm土层的有机质含量平均值分别为15.50,15.19g/kg,5—60cm土层有机质含量平均值混交林较纯林高70.6%;纯林林下草本层多样性指数高于混交林,但丰富度指数、均匀度指数均低于混交林。

    Abstract:

    The major goal of this study is to develop reasonable operation and management practices of Robinia pswudoacacia plantation and improve its stability.Different interfering measures,including Robinia with Caragana,Robinia with pine and Robinia with Forsythia,and Robiniapure forest were investigated through field survey and labortory analysis to analysis and compare the physical and chemical properties,the growth status,and understory species diversity of artificial pure and mixed Robinia.The result showed that different management methods have low influence on population density for the both mixed and pure Robinia;the density of Robinaremained 1 000~1 500plant/hm2 through self-propagation and repair.However,the volume of the pure forest was significant higher than the mixed forests.The stem diameter of pure forest ranged from 8cm to 16cm,accounting for 79.31%of Robiniain sample plot,while stem diameter of the mixed varied from 2cm to 12cm for 82.58%of the Robinia.The coefficient of correlation between diameter and the projection area of Robinia was 0.385in pure forest,and 0.735in the mixed forests.The structure and tree shape of mixed forests was better than that of the pure forest.The pure forest showed less effectiveness inimproving soil bulk density and organic matter than the mixed forests;specifically,the Robinia and Caragana mixed forest exhibited the highest effectiveness.Soil organic matter contents of the pure and mixed forests in 0to 5cm soil layer were 15.50g/kg and 15.19g/kg,respectively.The average organic matter in 5cm to 60 cm soil layer under the mixed forest was 70.6% higher than that under the pure forest.Diversity index of understory herb layer in pure forest was higher than the mixed,however,the richness and evenness index were lower

    参考文献
    相似文献
    引证文献
引用本文

高俊芳,陈云明,许鹏辉,王铁梅.不同干扰措施下黄土丘陵区人工刺槐林生长结构及土壤理化性质分析[J].水土保持通报,2011,(5):69-74

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2010-12-17
  • 最后修改日期:2011-01-21
  • 录用日期:
  • 在线发布日期: 2014-11-26
  • 出版日期: