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[1]CAO Yunsheng,ZHAO Yanling.Study on Water Conservation Capacities of Litter Layer and Soil Layer in Different Shrub Forests[J].Research of Soil and Water Conservation,2019,26(06):179-183.

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Study on Water Conservation Capacities of Litter Layer and Soil Layer in Different Shrub Forests

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 06 Page number: 179-183 Column: Public date: 2019-10-17

Title:: Study on Water Conservation Capacities of Litter Layer and Soil Layer in Different Shrub Forests

Author(s):: CAO Yunsheng^1,2, ZHAO Yanling^1,3; 1. College of Earth Science and Surveying Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China;
2. Beijing Engineering Consulting Company, Beijing 100083, China;
3. Institute of Land Reclamation and Ecological Reconstruction, China University of Mining and Technology(Beijing), Beijing 100083, China

Keywords:: shrub; litter layer; soil layer; water conservation

CLC:: S715.3

DOI:: -

Abstract:: In order to explore the water conservation capacity of litter layer in different shrub forests, three shrub stands were selected as research samples. The indoor soaking method and double-ring knife method were used to measure the relevant indicators of the water conservation of the litter layers and soil layers of three shrubs. The results showed that:(1) the three important factors, accumulation the maximum water holding capacity and the effective storage capacity of the litter layer, decreased in the order:Vitex negundo L. var. heterophylla > Lespedeza bicolor > Spiraea trifida; (2) the water holding capacity and water holding rate of 0.25 h decrease in the order:Vitex negundo L. var. heterophylla > Lespedeza bicolor > Spiraea trifida, and the water holding capacity of the litter layer has the function relationship with the water immersion time, the function is expressed as Q=alnt+b (R²>0.97), the relation between the water holding rate of the litter layer and the water immersion time can be described by the power function which is expressed as V=Ktⁿ (R²>0.99); (3) the soil effective water holding capacity decreases in the order:Vitex negundo L. var. heterophylla > Spiraea trifida > Lespedeza bicolor; the initial infiltration rate and steady infiltration rate of forest stands decrease in the sequence:Vitex negundo L. var. heterophylla > Spiraea trifida > Lespedeza bicolor; there is a good functional relationship between infiltration time and infiltration rate of soil in the stands, and the relationship is expressed as:y=a·x^b (R²>0.94). The most abundant water source conservation abilities of the litter layer and the soil layer are observed in the Vitex negundo L. var. heterophylla shrub forest.

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