摘要
运用室内浸提法对沿海防护林6种不同竹种凋落叶持水性能和失水性能进行研究,结果表明:花吊丝竹(381.8%)的最大持水率较高,其次分别是吊丝单竹372.71%,勃氏甜龙竹370.91%,绿竹359.04%,麻竹348.81%,而大头典竹(340.60%)的最大持水率则最低;各竹种凋落叶的最大失水率从大到小依次为花吊丝竹194.73%,勃氏甜龙竹186.76%,绿竹183.92%,吊丝单竹183.17%,麻竹173.69%,大头典竹最小为155.76%。从凋落叶的吸水过程来看,各竹种凋落叶的持水率在浸入水中0h-3h之间有一个较快上升的过程吸水速率都在1g.g-1.h-1左右,3h后随着浸泡时间的延长凋落叶持水率增加变缓,16h后逐渐趋于平稳;从各竹种凋落叶的失水过程来看,不同竹种凋落叶失水率在0h-8.5h之间以较快的速度增加,8.5h后其失水率增加的速度变缓并逐渐趋于平稳。综上可知各竹种凋落叶的持水性能远大于失水性能,因此6种沿海防护林竹种凋落叶能够起到很好的涵养水源的作用。
By-using-soaking-extract-method,-we-studied-the-water-absorbing-capacity-and-the-water-losing-capacity-of-six-kinds-of-bamboo-litter-in-coastal-protection-forest.-The-results-were-as-follows：-the-maximum-water-holding-rate-is-Dendrocalamus-minor-var.amoenus-（381.8%）-,-followed-by-the-Dendrocalamopsis-vario-striata-（372.71%）,-Dendrocala-mus-brandisii-（370.91%）,-Dendrocalamopsis-oldhami-（359.04%）,-Dendrocalamus-latiflorus-（348.81%）,while-the-mini-mum-of-water-holding-rate-is-Dendrocalamopsis-beecheyana-var.pubescens-（340.60%）.The-maximum-water-losing-rate-were-as-follows：-Dendrocalamus-minor-var.amoenus-（194.73%）﹑Dendrocalamus-brandisii-（186.76%）﹑Dendrocalamopsis-oldhami-（183.92）﹑Dendrocalamopsis-vario-striata-（183.17%）﹑Dendrocalamus-latiflorus-（173.69%）﹑Dendrocalamopsis-beecheyana-var.pubescens-（155.76%）.-Throughout-the-course-of-absorbent,-each-bamboo-litter-immersed-in-water-ab-sorption-in-the-0h--3h-have-a-rapid-rise-in-the-process,-the-water-holding-rate-is-about-1g.g-1.h-1-.-After-3h-with-pro-longed-immersion-time,-bamboo-litter-slows-increased-and-then-gradually-stabilized-after-16h.-In-the-process-of-bam-boo-litter-dehydration,-water-losing-rates-of-different-bamboo-litter-increase-at-a-faster-rate-between-0h-8.5h,-after-8.5h-the-rate-of-increasing-is-slower-and-gradually-stabilized.-Above-all,-the-water-holding-capability-of-bamboo-litter-can-be-much-larger-than-the-water-losing-capacity,-it-turns-out-that-six-kinds-of-bamboo-litter-in-coastal-protection-forest-play-a-good-role-in-water-conservation.
出处
《福建林业》
2014年第4期25-28,共4页
Fujian Forestry
基金
福建省农业科技重大专项(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)
关键词
沿海防护竹林
凋落叶
持水性
失水性
coastal protective bamboo forest
withered leaves
water-holding capacity
water-losing capacity
