上位阔叶林对毛竹林水分影响的研究
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摘要
本文共选取了A、B、C三种山顶存在阔叶林的毛竹林,另选取类型D(毛竹纯林)作为对照。主要研究了包括毛竹林土壤田间持水量在内的四项水分指标与一些自变量之间的函数关系,另对各类型毛竹林生产力等作了简要的调查,结果表明:
1.类型A、B、C的毛竹林平均田间持水量均高于类型D;
2.类型A、B、C毛竹林分别在距离山顶阔叶林为0～70m、0～50m、0～50m范围内,土壤质量含水率高于毛竹纯林:
3.类型A、B、C三种类型毛竹林竹鞭含水率在任何位置均大于毛竹纯林;
4.A、B、C三种类型毛竹林在距离阔叶林垂直距离分别为0-70m、0-70m、0-25m范围内竹根含水率大于类型D;
5.在毛竹林的各个坡位,土壤田间持水量、土壤质量含水率、竹根含水率均随着混交比例的增加而增加,而竹鞭含水率除了在上坡位置随混交比例增加而增加外,在中坡和下坡位置则出现随混交比例增加先减小而后增加的现象:
6.类型A阔叶林和毛竹林的水源涵养能力均优于其他三种类型,其次是类型B、C,类型D最差;
7.类型A、B、C的毛竹平均胸径从上坡到中坡再到下坡有明显的高、低、高的趋势,而类型D则不断增加;
8.各类型毛竹林平均土壤有机质含量以类型A最高,类型B次之,类型C再次,类型D最差;
9.各类型毛竹地下茎平均节间长和平均直径均以类型A最大,类型B次之,类型C再次,类型D最差。
This paper have chosen three types of Phyllostachys heterocycla var.pubescens forests that with broad-leaved forest on its upside and one type of pure stand of Phyllostachys heterocycla var.pubescens forests as comparison.We have mainly studentied the function relation between four moisture factors including field moisture capacity and some independent variables,the main conclusions are as follows:
1.The mean field moisture capacity of Phyllostachys heterocycla vat.pubescens forests of type A、B、C is higher than type D of Phyllostachys heterocycla var.pubescens forests.
2.The soil water content of Phyllostachys heterocycla var.pubescens forests of type A、B、C is higher than type D of Phyllostachys heterocycla vat.pubescens forests when vertical distance of Phyllostachys keterocycla var.pubescens forests of type A、B、C are between 0 and 70 meter、0 and 50 meter、0 and 50 meter.
3.At any distance,the water content of bamboo rhizome of Phyllostachys heterocycla var.pubescens forests of type A、B、C is higher than pure stand of Phyllostachys heterocycla var.pubescens forests.
4.The mean water content of rhizome root of type A、B、C is bigger than type D when vertical distance scope of Phyllostachys heterocycla var.pubescens of type A、B、C is 0 up to 70 meters、0 up to 70 meters、0 up to 25 meters.
5.The field moisture capacity、soil water content and water content of rhizome root of Phyllostachys heterocycla var.pubescens forests are all getting bigger with the increment of mixed proportion.The water content of bamboo rhizome also increase gradually with the increment of mixed proportion in upslope position,but decrease gradually at first,then increase gradually with the increment of mixed proportion in mesoslope position and downslope position.
6.Including broad-leaved forest and Phyllostachys heterocycla var.pubescens forest,the ability of conserving water of type A is the best,the second is type B,the third is type C,type D is the lowest.
7.Mean chest height diameter of Phyllostachys heterocycla var.pubescens forest with broad-leaved forest on its upside has obvious tendency of big、small、big from upslope position to mesoslope position to downslope position,but the Mean chest height diameter of pure stand Phyllostachys heterocycla var.pubescens forest increase gradually from upslope position to downslope position.
8.The mean soil organic substance content of type A is the biggest,type B is the second,type C is the third,type D is the worst.
9.Mean rhizome internode length and rhizome diameter of type A is the biggest, type B is the second,type C is the third,type D is the worst.
1.类型A、B、C的毛竹林平均田间持水量均高于类型D;
2.类型A、B、C毛竹林分别在距离山顶阔叶林为0～70m、0～50m、0～50m范围内,土壤质量含水率高于毛竹纯林:
3.类型A、B、C三种类型毛竹林竹鞭含水率在任何位置均大于毛竹纯林;
4.A、B、C三种类型毛竹林在距离阔叶林垂直距离分别为0-70m、0-70m、0-25m范围内竹根含水率大于类型D;
5.在毛竹林的各个坡位,土壤田间持水量、土壤质量含水率、竹根含水率均随着混交比例的增加而增加,而竹鞭含水率除了在上坡位置随混交比例增加而增加外,在中坡和下坡位置则出现随混交比例增加先减小而后增加的现象:
6.类型A阔叶林和毛竹林的水源涵养能力均优于其他三种类型,其次是类型B、C,类型D最差;
7.类型A、B、C的毛竹平均胸径从上坡到中坡再到下坡有明显的高、低、高的趋势,而类型D则不断增加;
8.各类型毛竹林平均土壤有机质含量以类型A最高,类型B次之,类型C再次,类型D最差;
9.各类型毛竹地下茎平均节间长和平均直径均以类型A最大,类型B次之,类型C再次,类型D最差。
This paper have chosen three types of Phyllostachys heterocycla var.pubescens forests that with broad-leaved forest on its upside and one type of pure stand of Phyllostachys heterocycla var.pubescens forests as comparison.We have mainly studentied the function relation between four moisture factors including field moisture capacity and some independent variables,the main conclusions are as follows:
1.The mean field moisture capacity of Phyllostachys heterocycla vat.pubescens forests of type A、B、C is higher than type D of Phyllostachys heterocycla var.pubescens forests.
2.The soil water content of Phyllostachys heterocycla var.pubescens forests of type A、B、C is higher than type D of Phyllostachys heterocycla vat.pubescens forests when vertical distance of Phyllostachys keterocycla var.pubescens forests of type A、B、C are between 0 and 70 meter、0 and 50 meter、0 and 50 meter.
3.At any distance,the water content of bamboo rhizome of Phyllostachys heterocycla var.pubescens forests of type A、B、C is higher than pure stand of Phyllostachys heterocycla var.pubescens forests.
4.The mean water content of rhizome root of type A、B、C is bigger than type D when vertical distance scope of Phyllostachys heterocycla var.pubescens of type A、B、C is 0 up to 70 meters、0 up to 70 meters、0 up to 25 meters.
5.The field moisture capacity、soil water content and water content of rhizome root of Phyllostachys heterocycla var.pubescens forests are all getting bigger with the increment of mixed proportion.The water content of bamboo rhizome also increase gradually with the increment of mixed proportion in upslope position,but decrease gradually at first,then increase gradually with the increment of mixed proportion in mesoslope position and downslope position.
6.Including broad-leaved forest and Phyllostachys heterocycla var.pubescens forest,the ability of conserving water of type A is the best,the second is type B,the third is type C,type D is the lowest.
7.Mean chest height diameter of Phyllostachys heterocycla var.pubescens forest with broad-leaved forest on its upside has obvious tendency of big、small、big from upslope position to mesoslope position to downslope position,but the Mean chest height diameter of pure stand Phyllostachys heterocycla var.pubescens forest increase gradually from upslope position to downslope position.
8.The mean soil organic substance content of type A is the biggest,type B is the second,type C is the third,type D is the worst.
9.Mean rhizome internode length and rhizome diameter of type A is the biggest, type B is the second,type C is the third,type D is the worst.
引文
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[9]高志勤,傅懋毅.不同毛竹林土壤水分物理性质的特征比较[J].林业科技开发,2005,19(6):12-15
[10]曹永慧,萧江华,陈双林,等.竹阔混交林中阔叶树对毛竹生长的影响及竞争关系[J].浙江林学院学报,2006,23(1):35-40
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