[1]TANG He,CHEN Yonghua,ZHANG Jianguo,et al.Effects of Thinning on Litter Water Holding Capacity of Quercus acutissima Secondary Forest[J].Research of Soil and Water Conservation,2018,25(04):104-109,115.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 04
Page number:
104-109,115
Column:
Public date:
2018-06-13
- Title:
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Effects of Thinning on Litter Water Holding Capacity of Quercus acutissima Secondary Forest
- Author(s):
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TANG He1, CHEN Yonghua2, ZHANG Jianguo2, XUE Wenyan1, ZHANG Wenhui1
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1. College of Forestry, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Huanglong Forest Bureau of Huanglongshan of Yan’an, Huanglong, Shaanxi 715700, China
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- Keywords:
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litter; water-holding capacity; Quercus acutissima; tending thinning; modified interception
- CLC:
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S715
- DOI:
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- Abstract:
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As an important means of forest management, thinning can affect the water holding capacity of litter. In order to evaluate the relationship between thinning intensity and the water-holding capacity of litter layer, the natural secondary Quercus acutissima of Qiaoshan Mountains in the south area of the Loess Plateau was used as our study area. Three plots with thinning intensities of 15%, 25% and 35% were established and plot that have not been thinned was selected as the control check (CK). The typical sampling method, drying method, soaking method were used to examine the effect of thinning intensity on the water-holding capacity of litter layer. The results showed as the follows. (1) the thinning reduced the total litter reserves, with the increase of the thinning intensity, the amount of the decomposed layer increased firstly and then decreased, the middle thinning (3.833 t/hm2) being the most and following the light thinning (21.838 t/hm2); (2) under light thinning, the maximum water-holding capacity of the litter was the highest (7.60 mm) and it was the lowest under the heavy thinning (6.21 mm); (3) light thinning plot saw the highest number of modified interception in litter layer (56.79 t/hm2) and in decomposed layer(38.56 t/hm2) and the second highest number in un-decomposed layer (18.21 t/hm2); (4) the water-absorbing rate was significantly correlated in all three thinning plots. In conclusion, light thinning can improve water-holding capacity of the natural secondary Quercus acutissima. The conclusion can be used as reference for the close-to-nature management of secondary forest of Quercus acutissima in Qiaoshan forest zone.