| 毛竹杉木混交林水源涵养功能研究 |
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| 引用本文： | 李仁昌.毛竹杉木混交林水源涵养功能研究[J].福建林业科技,2001(Z1). |
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| 作者姓名： | 李仁昌 |
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| 作者单位： | 福建省松溪国有林场 福建松溪353500 |
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| 摘 要： | 毛竹杉木混交林水源涵养能力和经济效益分析结果表明 :杉木密度为 135 0株·hm-2 的混交林分涵养水源能力最强 ,林冠层持水量比杉木纯林多 0 5 4 5t·hm-2 ,比毛竹纯林多 3 0 4 9t·hm-2 ;地上部分总持水量达 2 5 4 2 4t·hm-2 ,分别比杉木纯林、毛竹纯林增加 3 14 3t·hm-2 、3 30 9t·hm-2 ;0～ 4 0cm土壤层贮水量达 6 11 2t·hm-2 ,比杉木纯林、毛竹纯林和其它混交林都大 ;初渗值达 6 0 86mm·min-1,稳渗值达 2 4 32mm·min-1,分别是杉木纯林 2 8倍、2 3倍 ,是毛竹纯林的 2 5倍、1 6倍 ;年水源涵养量达 14 4 15t·hm-2 ,比荒山大 2 376t·hm-2 ,比杉木纯林大 74 0t·hm-2 。
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| 关 键 词： | 杉木 毛竹 混交林 持水量 水源涵养 |
Studies on the Water Conservation Functions of Phyllostachys pubescens and Cunninghamia lanceolata Mixed Forests |
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| LI Ren,chang.Studies on the Water Conservation Functions of Phyllostachys pubescens and Cunninghamia lanceolata Mixed Forests[J].Journal of Fujian Forestry Science and Technology,2001(Z1). |
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| Authors: | LI Ren chang |
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| Abstract: | The analysis results show that the ability of conserving water of mixed stands with the Cunninghamia lanceolata density of 1350 trees/hm 2 is strongest.The canopy layer water holding capacity is 0.545 tons/hm 2 more than that of pure C.lanceolata forests,3.049 tons/hm 2 more than that of pure P.pubescens forests.The total water holding capacity of above ground portion is 25.424 tons/hm 2,3 143 tons/hm 2 more than that of pure C.lanceolata forests and 3.309 tons/hm 2 more than that of pure P.pubescens forests respectively.The water reserve of soil layer (0～40cm) is 611.2 tons/hm 2,all bigger than that of pure C.lanceolata and P.pubescens forests as well as other mixed forests.The original osmosis value and stable osmosis value reach 60.80 mm/min and 20.32 mm/min respectively,2.8 times and 2.3 times as much as those of pure C.lanceolata forests,2.5 times and 1.6 times as much as those of pure P.pubescens forests accordingly.The annual water conservation amount is 14415 tons/hm 2,2376 tons/hm 2 more than that of barren mountains and 740 tons/hm 2 more than that of pure C.lanceolata forests respectively. |
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| Keywords: | Cunninghamia lanceolata Phyllostachys pubescens Mixed forest Water holding capacity Water conservation |
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