山地森林-干旱河谷交错带不同植被枯落物水文效益研究  

Hydrological Effect of Different Vegetation Litter in Interlaced zone of Mountain Forest and Arid River Valley

作　　者：程良爽[1] 宫渊波[1] 关灵[1] 伍维翰[1] 刘敏[2] 

机构地区：[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

出　　处：《中国水土保持》2009年第12期36-39,共4页Soil and Water Conservation in China

基　　金："十一五"国家科技支撑计划重大项目(2006BAC01A11);四川农业大学森林培育重点学科建设项目

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。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.

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 

分 类 号：S714.7[农业科学—林学]