[1]SUN Hao,LIU Xiaoyong,HE Qifa,et al.Assessments of Four Types of Forests on Soil Water Conservation Functions in the Upper Reaches of Xiu River[J].Research of Soil and Water Conservation,2017,24(04):337-341,348.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 04
Page number:
337-341,348
Column:
Public date:
2017-08-28
- Title:
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Assessments of Four Types of Forests on Soil Water Conservation Functions in the Upper Reaches of Xiu River
- Author(s):
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SUN Hao, LIU Xiaoyong, HE Qifa, JIANG Liuchun, XU Xin
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Institution of Forestry Survey and Planning in Jiangxi Province, Nanchang 330046, China
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- Keywords:
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upper reaches of Xiu river; soil water conservation functions; litterfall layer; soil layer
- CLC:
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S714.2;S715.7
- DOI:
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- Abstract:
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To understand the soil water conservation functions of different types of forests in the upper reaches of Xiu River, the eco-hydrological functions of the litterfall and soil were studied in the four main types of forests (i. e., Cuninghamia lanceolata forests, Pinus massoniana forests, broadleaved forests, Phyllostachys heterocycla forests). The results showed that:(1) the litter contents of the four types of forests ranged from 3.50~5.99 t/hm2, and the largest was observed in C. lanceolata foress, while the lowest was found in Ph.heterocycla forest; the largest water-holding capacities of litterfall decreased in the order: broadleaved forest > P.massoniana forest > C.lanceolata forest > Ph.heterocycla foress, which indicated that broadleaved forest had greater effect on soil water conservation than conifer forests; (2) the soil bulk densities in the four types of forest decreased in the sequence of P.massoniana forests > C.lanceolata forests > Ph.heterocycla forests > broadleaved forests, and the result showed that broadleaved forest was more beneficial to improve the soil structure; the water conservation of soil in Ph.heterocycla (376.50 t/hm2) forest was the largest among the four types of forests, followed by broadleaved forest (373.17 t/hm2) and P.massoniana forest (213.50 t/hm2), while C.lanceolata forest (186.42 t/hm2) was lower; (3) the comprehensive soil water conservation of litterfall and soil decreased in the sequence: Ph.Heterocycla forests > broadleaved forests > P.massoniana forests > C.lanceolata forests. These results suggested that the soil water conservation functions of broadleaved and Ph.heterocycla were superior to conifer forests, so we should do more to protect broadleaved and Ph. heterocycla.