抚育措施对红树植物幼树生长的影响

Effect of Tending on the Mangrove Sapling

关键词:  除灌  施肥  红树植物  幼树生长

Key words:  shrub control  fertilizing  mangrove  sapling growth

摘要:

采用随机区组试验设计,研究在次生红树灌木林(白骨壤+桐花树群落community Avicennia marina+Aegiceras corniculatum)改造中施肥及除灌两种抚育措施及其组合对红树植物木榄(Bruguiera gymnorrhiza)、红海榄(Rhizophora stylosa)幼树生长的影响。结果表明,除灌可使木榄高生长提高16.5%,基径生长提高38.9%,幼树叶面积提高43.3%;施肥可使红海榄高生长提高9.7%,基径生长提高14.3%,叶面积提高37.4%;除灌和施肥均不能增加红树植物叶片的叶绿素含量。

Abstract:

The effects of shrub control, fertilizing and their combination on Bruguiera gymnorrhiza and Rhizophora stylosa were studied by randomized block in a Avicennia marina+ Aegiceras corniculatum secondary community. For B. gymnorrhiza, the stand height, basal diameter and leaf area in shrub control were 16.5%,38.9% and 43.3% greater respectively than that in shrub condition. Fertilizing for R. stylosa could increase stand height by 9.7%, basal diameter by 14.3% and leaf areas by 37.4% respectively compared with the non-fertilizing.The two tending methods have no improvement in chlorophyll content of mangrove leaf.