城市水源地5种森林枯落物水文效应特征
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学资助项目"气候与土地利用变化对石羊河流域水资源影响研究"(51369003); 水利部公益性行业科研专项(201301081)和甘肃省技术研究与开发专项计划项目(1205TCYA005)


Water-holding Capacity of Litters in Five Different Typical Forest Types in Urban Water Source
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:

    [目的] 探讨云南省蒙自市菲白城市水源地5种主要森林类型林下枯落物的持水效应特征,为菲白水源地营造水土保持林、水源涵养林提供理论依据. [方法] 利用样方调查法、烘干法、浸泡法对其枯落物蓄积量、持水量、吸水速率、最大持水能力和拦蓄量等进行了研究. [结果] 各林分总蓄积量相差较大,依次为:杉木林> 华山松+杉木> 人工柏树林> 青冈栎+云南松> 人工桉树林;不同森林类型枯落物最大持水量变化范围7.85~13.91 t/hm2,最大持水率为165.85%~242.45%,最大拦蓄量为7.48~12.62 t/hm2,有效拦蓄量为6.53~11.03 t/hm2;5种森林枯落物持水量与时间呈较显著的对数函数关系,各层与浸水时间之间存在着显著的幂函数关系. [结论] 综合比较5种森林类型的持水性能,杉树的持水能力较好,能够很好地涵养水源.

    Abstract:

    [Objective] To clarify the water holding capacity of forest litters of 5 different forest types (Cupressus funebris, Pinus armandii+Cunninghamia lanceolata, Cyclobalanopsis glauca+ Pinus yunnanensis, Eucalyptus robusta, C. lanceolata) in Feibai reservoir area in Mengzi City of Yunan Province in order to provide theoretical basis for constructing the forest of water and soil conservation, and for constructing the forest of conservation of water supply in the study area. [Methods] We used the quadrat sampling method, oven drying method and soaking method to determine the litter preservation, water holding capacity, water absorption rate and water interception. [Results] The litter amount in different forests followed an order of C. lanceolata(9.48 t/hm2)> P. armandii+ C. lanceolata(7.09 t/hm2)> C. funebris(7.02 t/hm2)> C. glauca+ P. yunnanensis(6.13 t/hm2)> E. robusta(3.20 t/hm2);The maximum water holding volume of different forests litters ranged from 7.85 to 13.91 t/hm2, the maximum water holding rate ranged from 165.85% to 242.45%, and the maximum interception amount and the effective interception amount ranged from 7.48 to 12.62 t/hm2 and 6.53 to 11.03 t/hm2 respectively. The relationships between water-holding rate and immersion time in 5 different forest types were significantly fitted by logarithmic equation. The relationships between water absorption speed rate and soaking time could be described by power function. [Conclusion] The comprehensive analysis of water holding capacity of 5 different species indicated that Eucalyptus has a higher water-holding capacity and is more beneficial to the water conservation.

    参考文献
    相似文献
    引证文献
引用本文

曾建军,史正涛.城市水源地5种森林枯落物水文效应特征[J].水土保持通报,2016,36(1):38-43

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:2014-12-03
  • 最后修改日期:2014-12-15
  • 录用日期:
  • 在线发布日期: 2016-04-15
  • 出版日期: