[1]YANG Liangchen,ZHANG Chunru.Comprehensive Evaluation of Water Conservation Capacity in Litter and Soil Layer of Three Typical Forest Types Along the Highland Area[J].Research of Soil and Water Conservation,2018,25(06):177-182.
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Comprehensive Evaluation of Water Conservation Capacity in Litter and Soil Layer of Three Typical Forest Types Along the Highland Area
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 06
Page number:
177-182
Column:
Public date:
2018-10-26
- Title:
- Comprehensive Evaluation of Water Conservation Capacity in Litter and Soil Layer of Three Typical Forest Types Along the Highland Area
- Keywords:
- highland area; litter layer; soil layer; water conservation
- CLC:
- S714.7;S715
- DOI:
- -
- Abstract:
- In order to study the water conservation ability of the litter layer and soil layer of 3 typical stands along the highland area, the entropy weight method was used to evaluate the relative factors of the litter and soil layers. The results showed that: (1) the maximum water holding capacity of the litter layer decreased in the order: Coniferous and broad-leaved forest > Pinus tabuliformis forest > Larix gmelinii pure forest; the effective retention amount decreased in the order: Coniferous and broad-leaved forest > Pinus tabuliformis forest > Larix gmelinii pure forest; (2) the regression equation of water holding capacity and soaking time was presented as Q=alnt+b(R2 > 0.97), and the regression equation of water holding rate and soaking time was presented as V=Ktn(R2 > 0.94); (3) the total soil porosity of 3 types of forest types decreased in the order: Coniferous and broad-leaved mixed forest > Pinus tabuliformis forest > Larix gmelinii pure forest; the soil water holding capacity decreased in the order: Coniferous and broad-leaved mixed forest > Larix gmelinii pure forest > Pinus tabuliformis forest; the initial infiltration rate of soil layer of 3 kinds of stand was larger, the size decreased in the order: Coniferous broad-leaved mixed forest > Larix gmelinii pure forest > Pinus tabuliformis forest; the stable infiltration rate of the stand decreased in the oder: Coniferous and broad-leaved mixed forest > Larix gmelinii pure forest > Pinus tabuliformis forest; the regression equation of infiltration rate and infiltration time was presented as f=at-b(R > 0.96); (4) the weights calculated by the entropy weight method followed the sequence: the maximum water holding capacity of the litter > the effective blocking amount of the litter=soil water holding capacity > initial infiltration rate > soil capillary porosity > soil bulk weight > litter volume=soil non capillary porosity, and comprehensive scoring of 3 types of forest type decreased in the order: Coniferous and broad-leaved mixed forest > Pinus tabuliformis forest > Larix gmelinii pure forest. Coniferous and broad-leaved mixed forest is the best water conservation forest, which has the strongest function of soil and water conservation.
- References:
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1900-01-01