Water-holding Capacity of Litter of Forest for Water Conservation in Great Liaohe River Basin
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    Abstract:

    Pinus koraiensis,Larix keampfari,Quercus mongolica,polar-birch,Populus davidiana,weed trees,Shrubbery of Juglans mandshurica and the grass land in Great Liaohe River basin were investigated and studied to explore the hydrological characteristic of litter layer of water conservation forest and the relations between water-holding capacity,water absorption rate and soaking time of litters were established through field investigate and soak experiment.The results indicated that:(1)Among all the types of litters, the total thickness and existing litter amount of Quercus mongolica were the largest,4.83cm and 30.70t/hm2 respectively,and the shrubbery was the least with 0.65cm and 3.32t/hm2 respectively.(2)The maximum water holding capacity ranged from 3.97t/hm2 to 36.02t/hm2,the mixed water retaining capacity from 3.34t/hm2 to 34.06t/hm2,and the most effective water reaining capacity from 0.85t/hm2 to 20.39t/hm2 with the highest value in the Quercus mongolicaforest and the lowest in grassland.(3)Soak experiments demonstrated that water holding capacity and soaking time had remarkable logarithmic correlation, while the absorption rate and soaking time was of a power function.The dynamic changes of the water-holding capacity and the water-absorption rate were generally similar for litters of different forest types.

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周娟,陈丽华,郭文体,李长暄,李海燕.大辽河流域水源涵养林枯落物持水特性研究[J].水土保持通报英文版,2013,(4):136-141

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History
  • Received:November 29,2012
  • Revised:December 26,2012
  • Adopted:
  • Online: November 11,2014
  • Published: