Water-Holding Characteristics of Litter in Tropical Rainforest with Different Deforestation Methods in Jianfengling,Hainan Province

YAN Dong; LI Yi-de; XU Han; LUO Tu-shou; CHEN De-xiang; LIN Ming-xian

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Water-Holding Characteristics of Litter in Tropical Rainforest with Different Deforestation Methods in Jianfengling,Hainan Province

- Water-Holding Characteristics of Litter in Tropical Rainforest with Different Deforestation Methods in Jianfengling,Hainan Province
- Bulletin of Soiland Water Conservation Vol. 30, Issue 2, Pages: 57-60(2011)
- 作者机构：
  
  中国林业科学研究院热带林业研究所
- 作者简介：
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- Published：2011
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YAN Dong, LI Yi-de, XU Han, et al. Water-Holding Characteristics of Litter in Tropical Rainforest with Different Deforestation Methods in Jianfengling,Hainan Province[J]. Bulletin of Soiland Water Conservation, 2011, 30(2): 57-60.
DOI：

YAN Dong, LI Yi-de, XU Han, et al. Water-Holding Characteristics of Litter in Tropical Rainforest with Different Deforestation Methods in Jianfengling,Hainan Province[J]. Bulletin of Soiland Water Conservation, 2011, 30(2): 57-60. DOI：

摘要

以161个公里网格样地为基础

对尖峰岭热带雨林原始林和不同采伐方式(径级择伐和皆伐)下天然更新的次生林凋落物储量、持水量、持水率和吸水速率进行了研究。结果表明

原始林、径级择伐林和皆伐林的凋落物储量分别为6.42

6.29和6.66t/hm

;最大持水量分别为9.55

10.49和11.17t/hm

。3类型森林凋落物最大持水率大小依次为皆伐林(169.2%)>径级择伐林(168.0%)>原始林(155.6%)

经Kruskal—Wallis H检验表明

原始林、径级择伐林和皆伐林凋落物最大持水率间差异显著。凋落物持水量和凋落物持水率随着浸泡时间的增加符合W=alnt

模型而变化

凋落物吸水速率随着浸泡时间的增加依W=at

-b

模型下降。

Abstract

Based on field survey on the 161 grids with areas of 625 m2 in Jianfengling of Hainan Province

the water storage

water-holding capacity

water-holding rate and water absorption rate of forest litter were studied in different tropical rainforests(including primary forest

selectively logged forest and clear-cut forest).The results show that in primary forest

selectively logged forest and clear-cut forest

the litter storage was 6.42

6.29 and 6.66 t/hm2

and the max water-holding capacity was 9.55

10.49 and 11.17 t/hm2

respectively.Clear-cut forest has the highest max water-holding rate of 169.2%

followed by selectively logged forest(168.0%)

and primary forest(155.6%).The max water-holding rates in the three forests differed significantly as indicated by the Kruskal—Wallis H test.The water-holding capacity and water-holding rate of litter in all the forests increased logarithmically with soaking time(W=alnt+b).While

the water absorption rates of litter reduced followed equation W=at-b as soaking time increased.

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