| 抚育间伐对华北落叶松人工林涵养水源功能影响 |
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| 作者姓名： | 石丽丽 徐成立 王雄宾 谷建才 |
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| 作者单位： | 1.北京林业大学 水土保持学院；2.河北省石津灌区管理局；3.河北省木兰林管局；4.河北省水利科学研究院；5.河北农业大学 林学院 |
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| 摘 要： | 以冀北山地不同抚育间伐措施后华北落叶松人工林的植被层、枯落物层和土壤层为研究对象,对其水源涵养功能进行了初步分析。结果表明:华北落叶松林植被截留能力和枯落物持水功能随着间伐保留密度的减小而减小;土壤蓄水功能随着间伐强度的增大表现出逐渐增大趋势。间伐后进行枯落物收集、清除等经营活动可增大植被截留功能和枯落物持水功能,但会降低土壤蓄水功能。从涵养水源功能的组成来看,土壤蓄水功能最大,其次是枯落物持水功能,植被截留功能最小。由此认为,对华北落叶松人工林进行合理抚育间伐,能增强林地涵养水源功能。
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| 关 键 词： | 抚育间伐 植被截留 枯落物持水 土壤蓄水 涵养水源功能 华北落叶松人工林 |
Effects of Thinning on Water Conservation of Larix principis-rupprechtii Plantation in Mountainous Area of North Hebei |
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| Authors: | SHI Lili XU Chengli WANG Xiongbin GU Jiancai |
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| Abstract: | Forest thinning imposed the large effects on forest water conservation. Based on vegetation layer, litter layer and soil layer of Larix principis-rupprechtii plantation after thinning in different intensities in mountainous area of north Hebei province, forest water conservation was studied. Results showed that 1) vegetation interception and litter water retention decreased with the decrease in thinning intensity; 2) soil water-holding ability was raised by increased thinning intensity. Collecting litter after thinning could increase vegetation interception and litter water retention ability. Soil water-holding ability played the most important part in vegetation water conservation ability, next was litter water retention ability and least was vegetation interception ability. Larix principis-rupprechtii platation thinning reasonably could improve forest water conservation. |
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