[1]YANG Liangchen,ZHANG Nan.Water Conservation Capacity of Litter and Soil Layer in Three Mixed Forests in Along the Dam Area[J].Research of Soil and Water Conservation,2019,26(03):253-258.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 03
Page number:
253-258
Column:
Public date:
2019-04-12
- Title:
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Water Conservation Capacity of Litter and Soil Layer in Three Mixed Forests in Along the Dam Area
- Author(s):
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YANG Liangchen1, ZHANG Nan2
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1. Shexian Vocational and Technical Education Center of Hebei Province, Shexian, Hebei 056400, China;
2. Mulan-Weichang Forestry Administration of Hebei Province, Weichang, Hebei 068450, China
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- Keywords:
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along the dam area; litter layer; soil layer; water conservation
- CLC:
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S715.3
- DOI:
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- Abstract:
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In order to study the water conservation capacity of the litter layer and soil layer of three mixed forest types along the dam area, the indoor immersion method and the double ring knife method were used to examine the water conservation capacity of the litter layer and soil layer of three mixed forests. The results showed that:(1) the biomass of litter decreased in the order coniferous and broad-leaved mixed forest > broad-leaved mixed forest > coniferous mixed forest; (2) the maximum water holding capacity decreased in the sequence broad-leaved mixed forest > coniferous and broad-leaved mixed forest > coniferous mixed forest; effective storage decreased in the order broad-leaved mixed forest > coniferous and broad-leaved mixed forest > coniferous mixed forest; water holding capacity and water immersion time; the regression equation was expressed as Q=alnt+b(R2>0.89), and the regression equation of water holding rate and water immersion time was described as V=Ktn (R2>0.99); (3) the soil total porosity, non-capillary porosity and capillary porosity were higher in the broad-leaved mixed forest than the other two mixed forests, indicating that the geographical environment of broad-leaved mixed forest was more conducive to forest growth and water conservation; non-capillary porosity was closely related to soil water holding capacity, and its size was the same as soil water holding capacity, which decreased in the order broad-leaved mixed forest > coniferous and broad-leaved mixed forest > coniferous mixed forest, and the differences of initial infiltration rates of three forest layers were relatively large, and the initial infiltration rates decreased in the order coniferous mixed forest>broad-leaved mixed forest>coniferous and broad-leaved mixed forest; The regression equation of infiltration rate and infiltration time was described as f=at-b (R2>0.94).