珠三角风景林下植被景观灌木资源评价研究

Evaluation of shrub species for understory landscape of scenic forest in Pearl River Delta

灌木是风景林的重要组成部分,尽管生物量较小,但在提高林下景观质量、群落多样性等方面具有重要意义.作者在风景林下植被调查的基础上,采用层次分析法,建立了包括生态适应性、观赏价值以及应用潜力3个准则层和11个因子的评价指标,对分布于珠三角风景林下灌木进行综合评价.结果表明70种灌木划分为3个等级,其中Ⅰ级13种、Ⅱ级20种、Ⅲ级37种.在风景林下植被景观营造中,处在Ⅰ级种类应该优先开发利用,适宜作为灌木层的基调树种;Ⅱ级种类比Ⅲ级具有一定的优势性,适宜作为灌木层的骨干树种;Ⅲ级的种类适宜作为灌木层的一般树种,观赏价值较高的可作为灌木层特色树种.

Shrub is an important part of scenic forest.Although its biomass is smaller,it is very important that the shrub improves landscape quality,communities diversity,etc in understory.According to surveying on understory vegetation,the analytical hierarchy process(AHP)was applied for evaluation using11evaluation indexes from the three aspects including environment suitability,ornamental value and utilization potentiality.Shrub species of understory of scenic forest were investigated and evaluated comprehensively,which mainly could be distributed in Pearl River Delta.The70species were classified into three grades,including LevelⅠ,13species was the highest;LevelⅡ,20species was higher;LevelⅢ,37species was general.In landscape construction of understory vegetation of scenic forest,the species of LevelⅠshould give priority to development,and were adapted to predominant tree species;the species of LevelⅡhad certain advantages compared with species of LevelⅢand were adapted to main tree species;the species of LevelⅢwere adapted to general species,and the species which were high ornamental value were adapted to characteristic tree species in shrub layer.