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[1]ZHAO Yang,QI Rui,WANG Fei,et al.Water Conservation Effect of Litter and Soil Layer of Five Typical Forests in Bailongjiang and Taohe River Forest of Gansu[J].Research of Soil and Water Conservation,2021,28(03):118-125.

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Water Conservation Effect of Litter and Soil Layer of Five Typical Forests in Bailongjiang and Taohe River Forest of Gansu

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 03 Page number: 118-125 Column: Public date: 2021-04-20

Title:: Water Conservation Effect of Litter and Soil Layer of Five Typical Forests in Bailongjiang and Taohe River Forest of Gansu

Author(s):: ZHAO Yang^1,2, QI Rui^1,2, WANG Fei^1,2, CHEN Xuelong^1,2, LEI Wei^1,2, CAO Xiuwen^1,2, LIU Jinqian^1,2, YANG Yonghong^1,2; (1.Institute of Forestry Science of Bailongjiang in Gansu Province, Lanzhou 730070, China; 2.GanSu Bailongjiang National Forest Ecosystem Research Station, Zhouqu, Gansu 746300, China)

Keywords:: Bailongjiang and Taohe river forest; litter; soil; water conservation function

CLC:: S718.5

DOI:: -

Abstract:: Five kinds of typical forests in Bailongjiang and Taohe River forest were taken as the research objects to study their forestland water conservation capacity. The research about the forest litter and soil water-holding capacity was carried out in the 5 typical forests by means of indoor immersion and cutting-ring method. The results show that there was no significant difference in litter accumulation among 5 different forest types, and the maximum water holding capacity was between 21.07～29.20 t/hm², water holding capacity decreased in the order: Abies faxoniana>Quercus liaotungensis>Larix gmelinii>Betula>Pinus tabuliformis; the relationship between water-holding capacity and immersion time of litter followed the the logarithmic function(Q=aln(t)+b), and the relationship between water absorption rate and soaking time followd the power function(V=k·tⁿ); water conservation capacity of soil layer was between 2 848.97～3 168.15 t/hm², the maximum water capacity of soil layer decreaded in the order: Abies faxoniana>Betula>Quercus liaotungensis>Pinus tabuliformis>Larix gmelinii; the maximum water-holding capacity of 5 forest types accounted for more than 99% of the total water holding capacity of forestland, and water conservation capacity of forestland was between 2 876.63～ 3 197.35 t/hm², water conservation capacity decreased in the order: Abies faxoniana>Betula>Quercus liaotungensis>Larix gmelinii>Pinus tabuliformis. The semi-decomposed layer is the main body of litter water absorption, water conservation capacity of forestland is affected by forest species, soil, site and climate. Soil layer is the mainstay of water conservation of forestland.

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Last Update: 2021-04-20