Soil Water Storage and Infiltration Characteristics of Different Forest Soils in Laotudingzi Natural Reserve

Lü Gang; ZHANG You-song; ZHU Ye-ping

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Soil Water Storage and Infiltration Characteristics of Different Forest Soils in Laotudingzi Natural Reserve

- Soil Water Storage and Infiltration Characteristics of Different Forest Soils in Laotudingzi Natural Reserve
- Bulletin of Soiland Water Conservation Vol. 30, Issue 1, Pages: 109-113(2011)
- 作者机构：
  
  1. 辽宁工程技术大学资源与环境工程学院,辽宁,阜新,123000
  2. 北京林业大学水土保持学院,北京,100083
  3. 辽宁老秃顶子国家级自然保护区管理局, 辽宁恒仁,117219
- 作者简介：
- 基金信息：
- DOI：
  CLC： P332
- Published：2011
- 稿件说明：
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Lü Gang, ZHANG You-song, ZHU Ye-ping. Soil Water Storage and Infiltration Characteristics of Different Forest Soils in Laotudingzi Natural Reserve[J]. Bulletin of Soiland Water Conservation, 2011, 30(1): 109-113.
DOI：

Lü Gang, ZHANG You-song, ZHU Ye-ping. Soil Water Storage and Infiltration Characteristics of Different Forest Soils in Laotudingzi Natural Reserve[J]. Bulletin of Soiland Water Conservation, 2011, 30(1): 109-113. DOI：

摘要

为了评价老秃顶子自然保护区不同森林类型土壤水源涵养功能

对区内5种植被类型的土壤贮水能力与入渗特征进行了研究.结果表明

不同林型0-40cm土壤容重均值为0.76～1.71g/cm

非毛管孔隙度均值为8.15%～22.07%

毛管孔隙度均值为27.60%～53.28%

灌木林、岳桦林、杂木林等天然次生林的土壤孔隙状况要好于落叶松人工林和红松人工林;不同林型0-40cm土壤的蓄水容量为1 429.8～2 834.3t/hm

有效蓄容为325.9～882.7t/hm

毛管持水量为1 103.8～2 131.0t/hm

天然次生林土壤贮水能力相对较强;不同林型0-20cm土壤初渗率介于0.28～21.1mm/min之间

20-40cm土壤初渗率介于0.07～6.7mm/min之间

不同林型0-20cm土层稳渗率介于0.14～8.3mm/min之间

20-40cm土层稳渗率介于0.05～2.0mm/min之间

初渗率和稳渗率均表现为天然次生林高于人工林;土壤入渗速率与入渗时间存在良好的幂函数关系.

Abstract

In order to assess water conservational function of different forests types in Laotudingzi natural reserve

six forest soils were selected to test soil storage capacity and infiltration characteristics.The results indicate that soil bulk density(0-40cm)under these forests ranged from 0.76to 1.71g/cm3

non-capillary porosity ranged from 8.15%to 22.07%

capillary porosity ranged from 27.060%to 53.28%

soil porosity conditions of natural secondary forests

such as shrub

Betula ermanii

Spinney

were better thanLarix pricepis-ruprechtii andPinus koraiensis

soil water storage(0-40cm)ranged from 1 429.8 to 2834.3t/hm2

effective capacity ranged from 325.9to 882.7t/hm2

capillary water holding capacity ranged from 1103.8to 2131.0t/hm2

soil wate-holding capability of natural secondary forest was relatively stronger than plantation

initial infiltration rates(0-20cm)ranged from 0.28to 21.1mm/min

and initial infil-tration rates(20-40cm)ranged from 0.07to 6.7mm/min

steady infiltration rates(0-20cm)ranged from 0.14to 8.3mm/min

steady infiltration rates (20-40cm)ranged from 0.05to 2.0mm/min

initial infiltration rates and steady infiltration rates of natural secondary forests were relatively stronger than plantation.A power function can be used to describe the relationship between soil infiltration rate and time.

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