文章摘要
袁秀锦, 王晓荣, 潘磊, 雷静品, 崔鸿侠, 肖文发.三峡库区不同类型马尾松林枯落物层持水特性比较[J].水土保持学报,2018,32(3):160~166
三峡库区不同类型马尾松林枯落物层持水特性比较
Comparison of Water Holding Capacities of Litter in Different Types of Pinus massoniana Plantation in the Three Gorges Reservoir Area
投稿时间:2017-12-03  
DOI:10.13870/j.cnki.stbcxb.2018.03.025
中文关键词: 三峡库区  马尾松林  林分类型  枯落物  持水性
英文关键词: the Three Gorges Reservoir Area  Pinus massoniana plantationt  forest types  litter  water holding capacity
基金项目:国家"十二五"科技支撑计划项目(2015BAD07B0403)
作者单位E-mail
袁秀锦1, 王晓荣1,2, 潘磊2, 雷静品3, 崔鸿侠2, 肖文发1 1. 中国林业科学研究院森林生态环境与保护研究所, 国家林业局森林生态环境重点实验室, 北京 100091

2. 湖北省林业科学研究院
, 武汉 430075

3. 中国林业科学研究院林业研究所
, 国家林业局林木培育重点实验室, 北京 100091 
xiaowenf@caf.ac.cn 
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中文摘要:
      为了研究三峡库区不同林分类型马尾松林的枯落物持水性能,采用野外调查和室内浸泡法,对马尾松纯林(Ⅰ)、马尾松+香椿混交林(Ⅱ)、马尾松+檫木混交林(Ⅲ)、马尾松+盐肤木混交林(Ⅳ)、马尾松+槲栎+檫木混交林(Ⅴ)、马尾松+光皮桦混交林(Ⅵ)、马尾松+木姜子混交林(Ⅶ)7种马尾松林分类型枯落物持水特性进行了研究。结果表明:三峡库区不同林分类型马尾松林枯落物储蓄量为5.39~11.77 t/hm2,枯落物总厚度变化范围为2.14~3.73 cm,枯落物总蓄积量排列顺序为Ⅲ > Ⅳ > Ⅵ > Ⅱ > Ⅴ > Ⅰ > Ⅶ,最大持水量变化范围为11.94~23.42 t/hm2,最大持水率变化范围为198.53%~266.17%,7种类型马尾松林枯落物有效拦蓄量范围为8.34~15.90 t/hm2,有效拦蓄率范围为135.79%~195.81%,不同类型马尾松林枯落物有效拦蓄量排序与最大持水量排序相一致,均表现为Ⅲ > Ⅴ > Ⅳ > Ⅰ > Ⅱ > Ⅵ > Ⅶ。而枯落物有效拦蓄率排序除了类型Ⅶ和类型Ⅱ,其他类型大小顺序与最大持水率保持一致。7种类型马尾松林枯落物持水量随着浸泡时间延长呈对数形式增加,浸泡5 min时,不同林分类型枯落物吸水速率最大,浸泡1 h后,不同层次枯落物吸水速率均呈现缓慢下降。吸水速率V与浸泡时间t以幂函数拟合效果较好,吸水速率随着浸泡时间延长以幂函数形式降低。
英文摘要:
      In order to study the water holding capacity of the litter of Pinus massoniana plantation in different forest types in the Three Gorges Reservoir Area, the methods of field survey and soaking extraction was applied to study the water holding capacity of P. massoniana plantation (Ⅰ), P. massoniana + Toona sinensis mixed forest (Ⅱ), P. massoniana + Sassafras tzumu mixed forest (Ⅲ), P. massoniana + Rhus chinensis mixed forest (Ⅳ), P. massoniana + Quercus aliena + Sassafras tzumu mixed forest (Ⅴ), P. massoniana + Betula luminifera mixed forest (Ⅵ), P. massoniana + Litsea pungens mixed forest (Ⅶ). The result showed the litter amount in different types of P. massoniana forest in the Three Gorges Reservoir Area ranged from 5.39 t/hm2 to 11.77 t/hm2, the litter thickness ranged from 2.14 cm to 3.73 cm, and the order of total litter amount was Ⅲ > Ⅳ > Ⅵ > Ⅱ > Ⅴ > Ⅰ > Ⅶ, the maximum water holding quantity ranged from 11.94 t/hm2 to 23.42 t/hm2, the maximum water holding rate ranged from 198.53% to 266.17%. The effective interception of the seven types of P. massoniana forest litter ranged from 8.34 to 15.90 t/hm2, and the effective interception rate ranged from 135.79% to 195.81%, the effective interception of litter and the maximum water holding quantity, all showed Ⅲ > Ⅴ > Ⅳ > Ⅰ > Ⅱ > Ⅵ > Ⅶ. However, except for Type Ⅶ and Type Ⅱ, the effective interception rate was consistent with the maximum water holding rate of other types. The water holding capacity of seven types of P. massoniana plantation increased logarithmically with the soaking time. After soaking for 5 minutes, the water absorption rate of litter in different forest types was the highest, and it showed slow decline after soaking for 1 hour. The water absorption rate V and socking time t fit better with power function, and the water absorption rate decreased with the prolongation of the soaking time in power function form.
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