| 6种不同沿海防护混交林凋落叶持水性能比较 |
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| 引用本文： | 郑晶晶,蔡锰柯,林宇,魏建康,陈礼光,荣俊冬,郑郁善. 6种不同沿海防护混交林凋落叶持水性能比较[J]. 水土保持通报, 2015, 35(5): 111-116 |
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| 作者姓名： | 郑晶晶 蔡锰柯 林宇 魏建康 陈礼光 荣俊冬 郑郁善 |
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| 作者单位： | 福建农林大学 林学院, 福建 福州 350002;福建农林大学 林学院, 福建 福州 350002;福建省长乐大鹤国有防护林场, 福建 长乐 350212;福建农林大学 林学院, 福建 福州 350002;福建农林大学 林学院, 福建 福州 350002;福建农林大学 竹类研究所, 福建 福州 350002;福建农林大学 林学院, 福建 福州 350002;福建农林大学 竹类研究所, 福建 福州 350002;福建农林大学 林学院, 福建 福州 350002;福建农林大学 竹类研究所, 福建 福州 350002 |
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| 基金项目： | 福建省农业科技重大专项"特色林木种质材料选育与高效培育关键技术研究"(2013NZ0001);福建省农业科技重大项目(2010N5002);中央财政林业科技推广项目([2013]7号) |
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| 摘 要： | [目的]了解并比较沿海地区6片木麻黄与竹子防护混交林凋落叶持水性能状况,为沿海防护林树种选择提供理论依据。[方法]通过设置标准地,样方搜集和室内浸水试验,测量凋落叶自然含水率、持水率、吸水速率、失水率和失水速率,比较分析混交林凋落叶持水性能。[结果]木麻黄与花吊丝竹混交林凋落叶的最大持水率较高,其次为吊丝单竹+木麻黄、勃氏甜龙竹+木麻黄、绿竹+木麻黄、麻竹+木麻黄和大头典竹+木麻黄;而自然含水率从高到低依次为勃氏甜龙竹+木麻黄花吊丝竹+木麻黄绿竹+木麻黄大头典竹+木麻黄吊丝单竹+木麻黄麻竹+木麻黄;从凋落叶的吸水和自然风干过程来看,6种混交凋落叶的持水率、吸水速率、失水率和失水速率在浸泡或自然风干的0~2h有一个迅速变化的趋势,2h后凋落叶持水率和吸水速率逐步变缓,16h后逐渐趋于平稳。[结论]回归分析结果表明,持水率和浸泡时间及失水率和风干时间之间的关系均为对数函数关系,而吸水速率与浸泡时间及失水速率与风干时间的关系均为幂函数关系。
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| 关 键 词： | 沿海防护混交林 竹子 凋落叶 持水性 失水性 |
| 收稿时间： | 2014-09-25 |
| 修稿时间： | 2015-01-17 |
Comparative Study on Water-holding Capacity of Litters in Six Different Mixed Forests for Coastal Protection |
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| ZHENG Jingjing,CAI Mengke,LIN Yu,WEI Jiankang,CHEN Liguang,RONG Jundong and ZHENG Yushan. Comparative Study on Water-holding Capacity of Litters in Six Different Mixed Forests for Coastal Protection[J]. Bulletin of Soil and Water Conservation, 2015, 35(5): 111-116 |
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| Authors: | ZHENG Jingjing CAI Mengke LIN Yu WEI Jiankang CHEN Liguang RONG Jundong ZHENG Yushan |
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| Affiliation: | College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;Changle Dahe State-owned Protection Forest Farm of Fujian Province, Changle, Fujian 350212, China;College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;Research Institute of Bamboo, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;Research Institute of Bamboo, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;Research Institute of Bamboo, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China |
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| Abstract: | [Objective] Comparing the water-holding capacity of litters in six different bamboo forests mixed with Casuarina equisetifolia is of great importance to tree species selection in coastal protection forest.[Methods] By setting the standard plots, samples collection and laboratory immersion experiment, original water-holding rate, water-absorbing characteristic and the water-losing characteristic of litters in 6 mixed forest were measured to compare the water-holding capacity of litters in six different coastal protection mixed forests.[Results] The forest with maximum water-holding rate was Dendrocalamus minor var. amoenus, followed by the Dendrocalamopsis vario-striata, Dendrocalamus brandisii, Bambusa oldhami, Dendrocalamus latiflorus, Bambusa beecheyana var. pubescens. while the forest with higher original water content is D. brandisii, followed by D. minor var.amoenus, B. oldhami, B. beecheyana var.pubescens, D. vario-striata, D. latiflorus. In absorbing and natural drying process, water-holding rate, water-absorbing speed, water-losing rate and water-losing speed of all kinds of litters in mix forest increased rapidly in the first two hours. From then on, the rates slowed down with prolonged immersion time, and gradually became stabilized after 16 hours.[Conclusion] Water-holding rate and water-losing rate of litters increased following a log function with the time immersed in water, and the water-absorbing speed rate and water-losing speed followed a power function |
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| Keywords: | mixed forests for coast protection bamboo litters water-holding characteristic water-losing characteristic |
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