长江科学院院报

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2015 , Vol. 32 >Issue 1: 43 - 48

DOI: https://doi.org/10.3969/j.issn.1001-5485.2015.01.009

水资源与环境

保山北庙水库集水区5种森林类型枯落物持水特性研究

  • 沈盈佳 ,
  • 曾建军
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  • 云南师范大学 旅游与地理科学学院,昆明 650500
沈盈佳(1973-),女,云南昆明人,讲师,硕士,从事区域生态与土地规划工作,(电话)15987181018(电子信箱)ssm999888@yahoo.com.cn。

收稿日期: 2013-09-03

  网络出版日期: 2015-01-15

基金资助

水利部公益性行业项目(201001058);云南省社会发展科技项目(2011FB042)

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Water Retention Characteristic of Five Forest Litters in Beimiao Reservoir in Baoshan City

  • SHEN Ying-jia ,
  • ZENG Jian-jun
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  • College of Tourism and Geography Science, Yunnan Normal University, Kunming 650500, China

Received date: 2013-09-03

  Online published: 2015-01-15

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摘要

利用样方调查法、烘干法、浸泡法分析了云南省保山市北庙水库集水区纯云南松、纯人工桉树林、混交林Ⅰ(云南松+桉树混交林)、混交林Ⅱ(云南松+华山松+杉木+青冈栎混交林)和纯华山松5种森林类型枯落物的持水能力。结果表明:5种森林类型枯落物蓄积量都较小,最大为7.27 t/hm2,最小为4.51 t/hm2;枯落物未分解层和半分解层持水量随着浸泡时间增加,在8 h时平均持水量分别为5.22,5.83 t/hm2,24 h时分别为5.69,6.26 t/hm2;吸水速率随着浸泡时间减少,在8 h时平均吸水速率分别为0.65,0.73 mm/h,到24 h时分别为0.24,0.26 mm/h,且均是半分解层＞未分解层;纯华山松和混交林Ⅱ 2种森林类型枯落物持水性能优于其他3种森林类型。研究结果可为水源区植被恢复、选择最佳树种、合理配植森林类型、森林涵养水源提供科学依据。

关键词： 北庙水库; 森林枯落物; 最大持水量; 最大拦蓄量; 有效拦蓄量

本文引用格式

沈盈佳 , 曾建军 . 保山北庙水库集水区5种森林类型枯落物持水特性研究[J]. 长江科学院院报, 2015 , 32(1) : 43 -48 . DOI: 10.3969/j.issn.1001-5485.2015.01.009

Abstract

The water-holding capacities of five forest litters are analysed by using quadrat survey method and drying and soaking. These forest litters include Pinus yunnanensis, artificial Eucalyptus forest, mingled forest Ⅰ(Pinus yunnanensis + Eucalyptus), mingled forest Ⅱ(Pinus yunnanensis+Pinus armandi+Cunninghamia lanceolata+Cyclobalanopsis glauca),and Pinus armandi in the catchment area of Beimiao Reservoir in Baoshan City. Results show that the storage capacity of these five forest litters are small, with the maximum reaching 7.27 t/hm2, and the minimum 4.51 t/hm2; the average water-holding capacity of forest litter’s undecomposed layer and half-decomposed layer increase with soaking time (respectively 5.22 mm and 5.83 mm in 8 h and 5.69 mm and 6.26 mm in 24 h); while the water absorption rate reduce with soaking time (respectively 0.65 mm/h and 0.73 mm/h in 8h, and 0.24 mm/h and 0.26 mm/h in 24 h). All of these values of half-decomposed layer are larger than those of undecomposed layer. The water holding performance of Eucalyptus and mingled forestⅡare better than that of the others.

Key words： Beimiao reservoir; forest litters; maximum water-holding capacity; maximum interception capacity; effective interception capacity

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