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测定了处于不同次生演替阶段的植物群落的物种多样性和冠层叶吸附水量,并分析了二者间的相关关系。结果表明:物种多样性从高到低依次是半湿润常绿阔叶林(49.33)、针阔叶混交林(38.33)、云南松林(28.67)、灌草丛(17.00)和桉树人工林(4.33),与其对应的冠层叶总吸附水量分别为12.93,7.29,5.86,3.81,4.86 t/hm2;总吸附水量与物种多样性间呈显著正相关关系(r2=0.593,n=15,p<0.01)。在木本植物层,随物种多样性递增,对应群落叶吸附水量先降后升;而草本层的叶吸附水量与物种多样性间未表现明显的相关关系。群落随演替的进行,植物多样性增加,群落截留效应逐步增大,且木本层的贡献也逐渐增大。
The species diversity of plant communities and the amount of water adsorbed by the canopy leaf in different secondary succession stages were determined, and the correlation between them was analyzed. The results showed that the species diversity from high to low was semi-humid evergreen broad-leaved forest (49.33), coniferous and broad-leaved mixed forest (38.33), Yunnan pine forest (28.67), shrub grass (17.00) and eucalyptus plantation , And the total amount of water absorbed by canopy leaf was 12.93, 7.29, 5.86, 3.81 and 4.86 t / hm2, respectively. There was a significant positive correlation between total water adsorption and species diversity (r2 = 0.593, n = 15, p <0.01 ). In the woody plant layer, with the increase of species diversity, the amount of water adsorbed on the leaf of the corresponding community first decreased and then rose; however, there was no significant correlation between leaf water adsorption and species diversity of the herb layer. With succession of communities, plant diversity increased, community interception effect gradually increased, and the contribution of woody layer also increased gradually.