Study on Water-holding Properties of Litters in Different Types of Forests of Yuntaishan Mountain Area in Shibing County, Guizhou Province

2018 5th International Conference on Advanced Composite Materials and Manufacturing Engineering

Li, Wenwen^1,2 ; Li, Yujie^1,2 ; Long, Mingzhong^3 ; Li, Xiaona^1,2

School of Karst Science, Guizhou Normal University, Guiyang, China^1

State Engineering Technology Institute for Karst Desertification Control, Guiyang, China^2

College of Eco-Environmental Engineering, Institute of Karst Wetland Ecology, Guizhou Minzu University, Guiyang

550001, China^3

关键词: Coniferous forests;    Evergreen broad-leaved forests;    Field observations;    Logarithmic curve;    Maximum water holding rates;    Water absorption rates;    Water holding capacity;    Water-holding rates;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/394/2/022057/pdf
DOI  :  10.1088/1757-899X/394/2/022057

来源: IOP

【 摘 要 】

Taking the coniferous forest, the hard leaf forest at mountain ridge and the evergreen broad-leaved forest as research objects, using field observations and indoor immersion test methods, analyzing the water holding capacity and water holding characteristics of litters. Through experimental monitoring and data analysis, compared the difference between the accumulation amount of litter, maximum water holding amount, maximum water holding rate and effective interception amount, and study on the relationship between water holding amount, water holding rate and soaking time, The results show: (1) Accumulation amount of litter: the coniferous forest 10.15t/hm2> the hard leaf forest at mountain ridge 8.73t/hm2> the evergreen broad-leaved forest 5.82t/hm2; maximum water-holding capacity: the hard leaf forest at mountain ridge 21.6t/hm2> the coniferous forest 21.41t/hm2> the evergreen broad-leaved forest 5.82t/hm2; maximum water holding rate: the evergreen broad-leaved forest 316.39% > the hard leaf forest at mountain ridge 247.73% > the coniferous forest 202.71%. (2) Effective interception amount: the coniferous forest 7.96t/hm2> the evergreen broad-leaved forest 6.41t/hm2> the hard leaf forest at mountain ridge 6.36t/hm2. (3) Litter soaking experiments show that the overall changing trend of water holding capacity, water holding rate and soaking time of the three kinds of litters are basically the same (logarithmic curve relationships); and the overall changing trend of water absorption rate and soaking time are basically the same, and it's monomial relationship.