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林业资源管理 ›› 2020›› Issue (4): 87-94.doi: 10.13466/j.cnki.lyzygl.2020.04.013

• 科学研究 • 上一篇    下一篇

甘肃子午岭林区不同林分水源涵养能力研究

魏宏征1(), 肖战峰2, 何小军1, 李世轩1, 佘占军2   

  1. 1.甘肃省子午岭林业管理局合水分局,甘肃 合水 745400
    2.甘肃省子午岭林业管理局合水分局蒿咀铺林场,甘肃 合水 745405
  • 收稿日期:2020-05-06 修回日期:2020-07-02 出版日期:2020-08-28 发布日期:2020-10-10
  • 作者简介:魏宏征(1963-),男,甘肃西峰人,高工,学士,主要从事森林经营管理、森林生态效益监测等研究工作。Email: 479381213@qq.com
  • 基金资助:
    甘肃省林业科技项目(2019kj057)

A Study on the Conservation Capacity of Different Forest Water Sources in Ziwu Mountain of Gansu Province

WEI Hongzheng1(), XIAO Zhan feng2, HE Xiaojun1, LI Shixuan1, SHE Zhanjun2   

  1. 1. Gansu Province Meridian Ridge Forestry Administration,Gansu Heshui 745400,China
    2. Gansu Province Meridian Ridge Forestry Administration,Artemisinin Tsui Forest Farm Gansu Water 745405,China
  • Received:2020-05-06 Revised:2020-07-02 Online:2020-08-28 Published:2020-10-10

摘要:

通过对甘肃子午岭林区针阔混交林、阔叶混交林、油松纯林的乔木植被、乔灌植被、乔灌草等植被类型的树冠截持量、地表径流量、枯落物持水量和土壤含水量测定分析发现:针阔混交林树冠截持量高于阔叶混交林和油松纯林;针阔混交林乔灌草植被地表径流量(3.24mm)、土壤侵蚀模数(0.46 t/(km2·a))最小;枯落物已分解层持水率(19.68%)最高,土壤层年均水源涵养量(318.28mm)高于枯落物层(187.17mm),混交林水源涵养能力高于纯林。综合分析得出:针阔混交林乔灌草植被水源涵养能力最大(592.18mm),油松纯林乔木植被水源涵养能力最小(376.92mm)。可以通过造林树种搭配和人工促进天然更新等措施,调整林分结构和植被类型分布,增强林分水源涵养功能。

关键词: 甘肃子午岭, 不同类型, 水源涵养, 能力研究

Abstract:

In the analysis of tree vegetation,joe irrigation vegetation,and grass-fed vegetation in Ziwu Mountain of Gansu Province,it is found that crown intercept of the coniferous mixed forest is higher than that of broad-leaf mixed forest and oil pine pure forest,and the surface runoff of the irrigation vegetation (3.24mm) and the soil erosion module (0.46 t/(km2·a)) are the smallest among them while the dry-falling layer holds the highest (19.68%),and the average annual water conservation of the soil layer (318.28mm) is higher than that of the dead-water layer (187.17mm),and the water conservation capacity of mixed forest is higher than that of pure forest. The comprehensive analysis results show that: the well-mixed forest joe irrigation grass (592.18mm) owns the strongest water conservation capacity while the pure forest vegetation of oil pine forest (376.92mm) owns the weakest. Water conservation capacity can be enhanced by the combination of planted tree species and the artificial promotion of natural renewal,and the adjustment of distribution of vegetation.

Key words: Ziwu Mountain of Gansu Province, different types, water conservation, capacity study

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