1. 广东省德庆林场,广东,肇庆,526600
2. 中国林业科学研究院 热带林业研究所,广东,广州,510520
3. 广州市林业和园林科学研究院,广东,广州,510405
纸质出版:2024
移动端阅览
梁育兴, 袁在翔, 王凯, 等. 米老排与红锥的不同种植模式对林下凋落物和土壤水源涵养能力的影响[J]. 水土保持通报, 2024,44(6):57-67.
Liang Yuxing, Yuan Zaixiang, Wang Kai, et al. Effects of Different Planting Models of Mytilaria Laosensis and Castanopsis Hystrix on Water Conservation Capacity of Litter and Soil Under Forest[J]. Bulletin of Soiland Water Conservation, 2024, 44(6): 57-67.
梁育兴, 袁在翔, 王凯, 等. 米老排与红锥的不同种植模式对林下凋落物和土壤水源涵养能力的影响[J]. 水土保持通报, 2024,44(6):57-67. DOI: 10.13961/j.cnki.stbctb.2024.06.007.
Liang Yuxing, Yuan Zaixiang, Wang Kai, et al. Effects of Different Planting Models of Mytilaria Laosensis and Castanopsis Hystrix on Water Conservation Capacity of Litter and Soil Under Forest[J]. Bulletin of Soiland Water Conservation, 2024, 44(6): 57-67. DOI: 10.13961/j.cnki.stbctb.2024.06.007.
[目的
]
探究米老排与红锥混交组合模式的水源涵养能力特征,筛选出水源涵养能力最佳的混交组合模式,为西江流域水源涵养林的构建与经营管理提供科学依据。[方法
]
通过3种混交比例(1∶3,2∶2,3∶1)和3种混交方式(株间混交、行带混交、块状混交)设置了9种米老排与红锥的混交林组合模式,并以米老排、红锥纯林为对照,对比分析了11种种植模式凋落物层、土壤层的水源涵养能力差异,利用熵权TOPSIS (technique for order preference by similarity to an ideal solution)模型筛选出最佳水源涵养能力的混交组合模式。[结果
]
①试验林凋落物层生物量、自然持水量、有效拦蓄量和最大持水量分别为1.17~4.21,0.38~2.29,5.15~10.58,6.40~13.37 t/hm
2
,均与试验林中米老排比例显著正相关(p<0.05);相比于株间混交、块状混交,行带混交的凋落物层生物量与有效拦蓄量较高。②试验林0—30 cm土层的自然持水量、毛管持水量、非毛管持水量、饱和蓄水量的变化范围分别为756.14~1 007.21,1 130.73~1 388.40,117.96~422.63,1 444.70~1 590.66 t/hm
2
;其中,毛管持水量、非毛管持水量在不同林分之间差异显著,且均与试验林中米老排比例存在显著的线性回归关系(p<0.05)。③米老排与红锥以3∶1混交比例进行行带混交的林分水源涵养能力最好,米老排纯林次之,其后是其余混交林,最后是红锥纯林。[结论
]
在幼龄林阶段,米老排与红锥混交林的水源涵养能力在一定程度上好于各自的纯林,且这种混交效应受混交比例与混交方式的影响。
[Objective] The characteristics of water conservation capacity of the mixed combination models of Mytilaria laosensis and Castanopsis hystrix were explored
and the best mixed combination mode of water conservation capacity was selected
in order to provided a scientific basis for the construction
operation and management of water conservation forest in Xijiang River basin. [Methods] Nine mixed plantation patterns with three mixing proportions (i.e.
1∶3
2∶2
and 3∶1) and three mixing modes (i.e.
interplant mixing
strip and row mixing
and block mixing) of M. laosensis and C. hystrix were selected
and the pure plantations of both species served as controls. The differences in the water conservation capacity of litter and soil among the eleven planting models were evaluated
and the mixed plantation with the optimal water conservation capacity was identified using an entropy weight TOPSIS (technique for order preference by similarity to an ideal solution) model. [Results] ① The biomass
natural water storage
effective water interception
and maximum water interception in the litter layer ranged from 1.17 to 4.21
0.38 to 2.29
5.15 to 10.58
and 6.40 to 13.37 t/hm2
respectively. These indices were positively and significantly correlated with the percentage of M. laosensis in the plantations (p<0.05). Compared to interplant mixing and block mixing
the strip and row mixing of the plantations yielded higher biomass and effective water interception in the litter layer. ② The natural moisture storage
capillary water storage
non-capillary water storage
and saturated water storage in soil at a depth of 0—30 cm ranged from 756.14 to 1 007.21
1 130.73 to 1 388.40
117.96 to 422.63
and 1 444.70 to 1 590.66 t/hm2
respectively. Capillary and non-capillary water storage differed significantly among the plantations and were positively correlated with the percentage of M. laosensis in the plantations (p<0.05). ③ The mixed plantation of M. laosensis and C. hystrix with a ratio of 3∶1 and strip and row mixing exhibited the optimal water conservation capacity. The water conservation capacity of the other plantations ranked as follows: pure plantation of M. laosensis
other mixed plantation patterns
and pure plantation of C. hystrix. [Conclusion] The water conservation capacity of the mixed plantation of M. laosensis and C. hystrix was
to a certain extent
better than that of each pure plantation in the young stand stage
which was influenced by the mixing proportions and modes.
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