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FOREST RESOURCES WANAGEMENT ›› 2022›› Issue (zk1): 91-101.doi: 10.13466/j.cnki.lyzygl.2022.S0.014

• Scientific Research • Previous Articles     Next Articles

Litter and Soil Hydrological Effects of Different Types of Shelterbelts in Northern Yanshan

LI Yanru1(), ZHAO Peng1, LI Haishan2, CHEN Zhe1, DONG Dapeng1, GU Jiancai1, LU Guiqiao1()   

  1. 1. College of Forestry,Hebei Agricultural University,Baoding,Hebei 071000,China
    2. Hebei Forestry and Grassland Bureau,Shijiazhuang 050000,China
  • Received:2022-07-20 Revised:2022-11-03 Online:2022-12-25 Published:2023-04-21

Abstract:

The litter and soil hydrological effects of five types of shelterbelts were studied,including Larix principis-rupprechtii forest,Populus davidiana and Betula platyphylla forest,Larix principis-rupprechtii and Betula platyphylla forest,Pinus tabuliformis and Larix principis-rupprechtii forest,Betula platyphylla forest.Research methods were soaking method and the ring knife method.The results showed that:1) The litter accumulation ranged from 11.26 to 17.75 t/hm2,with that of the Populus davidiana and Betula platyphylla forest being the highest,followed by the Pinus tabuliformis and Larix principis-rupprechtii forest,and that of the Betula platyphylla forest being the lowest.The accumulation of undecomposed layer in the Larix principis-rupprechtii forest and the Pinus tabuliformis and Larix principis-rupprechtii forest were greater than that of the semi-decomposition layer,and the law of the Populus davidiana and Betula platyphylla forest,the Betula platyphylla forest,and the Larix principis-rupprechtii and Betula platyphylla forest were opposite.2) The maximum water-holding capacity of the litter was 31.27~51.75 t/hm2,and the effective storage capacity was 23.69~27.70 t/hm2,both of them were the highest in the Populus davidiana and Betula platyphylla forest,the lowest in the Larix principis-rupprechtii forest.The water-holding capacity(rate) and retention capacity(rate) of semi-decomposed layer were greater than those of undecomposed layer.The water-holding capacity and water-holding rate of litter were logarithmic and exponential functions with soaking time,respectively.3) The soil bulk density ranged from 1.18 to 1.23 g/cm3,and the total porosity ranged from 43.75% to 58.47%.The soil effective water-holding capacity ranged from 64.71 to 131.09 t/hm2,with that of the Populus davidiana and Betula platyphylla forest being the highest,followed by the Betula platyphylla forest,and that of the Larix principis-rupprechtii forest being the lowest.The soil infiltration rate and infiltration time showed a power function relationship.4) By sequence,water conservation capacity order of the five forests was Populus davidiana and Betula platyphylla forest>Larix principis-rupprechtii and Betula platyphylla forest>Betula platyphylla forest>Pinus tabuliformis and Larix principis-rupprechtii forest>Larix principis-rupprechtii forest.Broad-leaved mixed forest and coniferous and broad-leaved mixed forest had better water conservation capacity.

Key words: litter layer, soil layer, hydrological characteristics, Northern Yanshan, shelterbelts

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