风对不同海岸梯度防护林物种多样性及生长的影响  

Effects of Wind on Species Diversity & Growth of Protection Forest along Different Coastal Gradients

作　　者：高伟[1] 

机构地区：[1]福建省林业科学研究院,福建福州350012

出　　处：《防护林科技》2013年第3期4-8,共5页Protection Forest Science and Technology

基　　金：国家"十一五"科技支撑计划专题(2009BADB2B0302);国家林业局南方山地用材林培育重点实验室基金资助项目

摘　　要：为研究风对防护林物种多样性及生长的影响,在2010年第13号台风"鲇鱼"过后,对福建东山岛沙质海岸带4种不同海岸梯度木麻黄防护林的物种多样性及生长状况进行了调查。结果表明:所调查的4个样地共出现维管束植物38种,分属22科38属,乔木植物均为木麻黄,灌木和草本呈一定的梯度变化;随着与最高潮水位距离的增大,乡土植被的数量和重要值逐渐增大,总物种多样性指数不断增大,总均匀度Jsi指数先下降后上升再下降,Jsh、Jmc指数逐渐上升,总优势度指数逐渐下降;风对不同梯度木麻黄生长的影响有极显著差异,第Ⅰ梯度的枯死率较高,第Ⅱ梯度的折干率和掘根率相对较高,第Ⅳ梯度的受损情况比第Ⅲ梯度又有所升高,所以应重视第Ⅳ梯度防护林的建设。In order to study the effects of wind on species diversity ~. growth of protection forest,after No. 13 ty phoon＂Megi＂in 2010,species diversity ＆. growth of protection forest along four kinds of different coastal gradients on the coastal zone of Dongshan Island in Fujian Province were investigated. Result shows that： 38 kinds of vascular plants appear in the four sample plots ,and belong to 22 families and 38 generas;all of the arbor plants are all Casu arina equisetiJblia ;the shrub ＆ herb plants appear a certain gradient;with the inerease of distance from peak water level, the number and the importantance value of native vegetation increase gradually, so dose the total species diver- sity; the Simpson evenness（J^i ）decrease first, and then increase, and decrease again; Shannon Wiener evenness（J^h ）, McIntosh evevness （Jaic） increase gradually, and the total dominance decrease gradually; wind have significant differ- ences on the effects of growth with different gradients; the die rate are higher in gradient I; the broken rate ＆. the grub rate are higher in the gradient H ;the damage in the gradient are heavier than that in the gradient , which indicated that we should pay attention to the construction of the protection forest in the gradient IV.

关 键 词：东山岛 台风 防护林 物种多样性 林分生长 

分 类 号：S718[农业科学—林学]