| 山地森林-干旱河谷交错带不同植被枯落物水文效益研究 |
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| 引用本文： | 程良爽,宫渊波,关灵,伍维翰,刘敏.山地森林-干旱河谷交错带不同植被枯落物水文效益研究[J].中国水土保持,2009(12). |
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| 作者姓名： | 程良爽 宫渊波 关灵 伍维翰 刘敏 |
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| 作者单位： | 1. 四川农业大学,长江上游林业生态工程四川省重点实验室,四川,雅安,625014
2. 理县林业局,四川,理县,623100 |
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| 基金项目： | "十一五"国家科技支撑计划重大项目，四川农业大学森林培育重点学科建设项目 |
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| 摘 要： | 对岷江上游山地森林-干旱河谷交错带的6种植被类型枯落物的水源调蓄功能及特征进行了研究,结果表明:6种植被类型按枯落物贮量大小排序为青冈次生林(46.20 t/hm2)>杨柳阔叶林(23.46 t/hm2)>针阔混交林(20.51t/hm2)>岷江柏幼林(16.02 t/hm2)>次生灌丛(11.17 t/hm2)>荒草坡(9.23 t/hm2),按枯落物层最大持水量、最大拦蓄量和有效拦蓄量大小排序均是青冈次生林>杨柳阔叶林>针阔混交林>岷江柏幼林>次生灌丛>荒草坡;在整个持水过程中,前2 h内各林分枯落物层吸水作用较强。
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| 关 键 词： | 枯落物 水文效益 植被类型 山地森林-干旱河谷交错带 |
Hydrological Effect of Different Vegetation Litter in Interlaced Zone of Mountain Forest and Arid River Valley |
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| Abstract: | It studies the functions of water regulation and storage and characteristics of litter of 6 vegetation types in interlaced zone of mountain forest and arid river valley on the upper stream of Minjiang River.The outcomes show that the sequence of litter storage of the 6 vegetation types is Cyclobalanopsis glauca secondary forest(46.2 t/hm2)>Salicaceae broadleaved forest(23.46 t/hm2)>mixed conifer forest(20.51 t/hm2)>Cupressus chengiana forest(16.02 t/hm2)>secondary shrub(11.17 t/hm2)>grassland slope(9.23 t/hm2).The sequence on the maximum moisture capacity,the maximum and effective interception amount of litter is Cyclobalanopsis glauca secondary forest>Salicaceae broadleaved forest > mixed conifer forest >Cupressus chengiana forest >secondary shrub >grassland slope.During the whole process of water holding,the water absorption of each forest litter in the first two hours is the stronger. |
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| Keywords: | litter hydrological benefits vegetation types interlaced zone of mountain forest and arid river valley |
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