Evaluation of Water Conservation Function of Alnus Formosana Mixed Plantations in Guangxi Zhuang Autonomous Region

Peng Yuhua; Zheng Wei; Tan Changqiang; He Qinfei; Shen Wenhui; Cao Yanyun; Hao Haikun; Huang Zhiling; He Feng

doi:10.13961/j.cnki.stbctb.2019.05.014

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Evaluation of Water Conservation Function of Alnus Formosana Mixed Plantations in Guangxi Zhuang Autonomous Region

- Evaluation of Water Conservation Function of Alnus Formosana Mixed Plantations in Guangxi Zhuang Autonomous Region
- Bulletin of Soiland Water Conservation Vol. 39, Issue 5, Pages: 98-105(2019)
- 作者机构：
  
  广西壮族自治区林业科学研究院,广西,南宁,530002
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2019.05.014
  CLC： S726.2;S727.21
- Published：2019
- 稿件说明：
移动端阅览
Peng Yuhua, Zheng Wei, Tan Changqiang, et al. Evaluation of Water Conservation Function of Alnus Formosana Mixed Plantations in Guangxi Zhuang Autonomous Region[J]. Bulletin of Soiland Water Conservation, 2019, 39(5): 98-105.
DOI：

Peng Yuhua, Zheng Wei, Tan Changqiang, et al. Evaluation of Water Conservation Function of Alnus Formosana Mixed Plantations in Guangxi Zhuang Autonomous Region[J]. Bulletin of Soiland Water Conservation, 2019, 39(5): 98-105. DOI： 10.13961/j.cnki.stbctb.2019.05.014.

摘要

[目的] 研究台湾桤木混交造林的枯落物层和土壤层的水源涵养能力，为台湾桤木在广西壮族自治区的合理经营与利用提供理论依据。[方法] 采用熵权法对台湾桤木×马尾松、台湾桤木×巨尾桉、台湾桤木×红锥及台湾桤木纯林的林分枯落物层和土壤层的水文效应相关因子进行综合评价。[结果] ①枯落物最大持水量最大是台湾桤木×红锥（2：1），台湾桤木×马尾松（1：1）最少；台湾桤木×红锥（1：2）的枯落物有效拦蓄率最大，台湾桤木×红锥（2：1）的枯落物有效拦蓄量最大，台湾桤木×巨尾桉（2：1）的枯落物有效拦蓄率和有效拦蓄量均最小。②台湾桤木混交林土壤容重均明显低于台湾桤木纯林，土壤总孔隙度、毛管孔隙度、自然含水率、最大持水量和毛管持水量均是台湾桤木混交林大于台湾桤木纯林。③采用熵权法计算权重值占比例最大是枯落物最大持水量，最少是土壤毛管孔隙度；台湾桤木不同混交造林模式水源涵养能力综合评价排序为：台湾桤木×巨尾桉（1：2） > 台湾桤木×红锥（2：1） > 台湾桤木×马尾松（1：2） > 台湾桤木×红锥（1：1） > 台湾桤木×巨尾桉（1：1） > 台湾桤木×马尾松（2：1） > 台湾桤木×红锥（1：2） > 台湾桤木×巨尾桉（2：1） > 台湾桤木×马尾松（1：1） > 台湾桤木纯林。[结论] 台湾桤木与马尾松、巨尾桉和红锥混交造林的水源涵养能力均优于台湾桤木纯林。

Abstract

[Objective] The water conservation ability of the litter and soil layers of Alnus formosana mixed plantations was studied in order to provide a theoretical basis for the rational management and utilization of A. formosana in the Guangxi Zhuang Autonomous Region.[Methods] The entropy weight method was used to comprehensively evaluate the hydrological effect related factors. The mixed modes included A. formosana and Pinus massoniana

A. formosana and Eucalyptus grandis×urophylla

A. formosana and Castanopsis hystrix

and an A. formosana pure plantation as the control.[Results] ① The maximum water holding capacities of litter were largest in the mixed A. formosana and C. hystrix plantation with a 2:1 ratio and least in the mixed A. formosana and P. massoniana plantation with a 1:1 ratio. The effective retention rate of litter in the mixed A. formosana and C. hystrix plantation (with a 1:2 ratio) was the highest

the effective retention amount in the mixed A. formosana and C. hystrix plantation (with a 2:1 ratio) was the highest

whilst the effective retention rate and amount in the mixed A. formosana and E. grandis×urophylla plantation (2:1) were the lowest. ② The soil bulk density in the mixed plantations was significantly lower than that in the pure forest

however

the total porosity

capillary porosity

natural water content

maximum water holding capacity

and capillary water holding capacity of the soil were all higher in the mixed plantations. ③ The entropy weight method was used to calculate the weight value. The maximum water holding capacity of the litter was the largest

and the soil capillary porosity was the smallest. The comprehensive evaluation of the water conservation ability was ranked as follows:A. formosana and E. grandis×urophylla (1:2) > A. formosana and C. hystrix (2:1) > A. formosana and P. massoniana (1:2) > A. formosana and C. hystrix (1:1) > A. formosana and E. grandis×urophylla (1:1) > A. formosana and P. massoniana (2:1) > A. formosana and C. hystrix (1:2) > A. formosana and E. grandis×urophylla (2:1) > A. formosana and P. massoniana (1:1) > CK.[Conclusion] The water conservation ability of the mixed plantations of A. formosana was better than that of the pure plantation.

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