Relationships among Undergrowths, Contents of Chemical Substances in Leaves and Arthropod Community in Phyllostachys heterocycla cv. pubescens Forest
- 生命科学－已发表论文 
对垦复施肥、垦复、劈草、化学除草和撂荒5种典型管理措施下毛竹叶可溶性糖、蛋白质、单宁和类黄酮含量进行测定并对林下植被和节肢动物群落进行调查分析。结果表明:1)管理措施对竹叶化学成分的月含量及时序变化规律产生了极为复杂而显著的影响;2)4类化学成分对毛竹冠层优势害虫种群具有显著的促进或抑制作用,并因而影响到节肢动物群落的结构,表现为类黄酮和单宁含量显著促进竹冠层节肢动物的均匀度;3)林下植被与群落的关系主要表现为灌木层植物多样性对林下和冠层节肢动物多样性的促进作用,以及藤本层植物多样性对林下节肢动物均匀度的促进作用;4)经营管理措施可通过改变林下植被和竹叶化学成分而对群落产生显著影响,在害虫的控制中应注重科学管理和适度保护林下植被。Through biochemical tests of bamboo leaves, surveys of undergrowths and arthropod communities in Phyllostachys heterocycla cv. pubescens forests managed with 5 different measures including cultivating and fertilization, cultivating, weeding, spraying herbicide and non-management in Sanming, Fujian Province from 2001 to 2002, the relationships among undergrowths, contents of chemical subtances in bamboo leaves and the arthropod community were studied. The results showed that 1) the effects of management measures on the monthly contents and their time dynamic of the chemical substances in bamboo leaves were significant and complex greatly; 2) the chemical substances of protein, water_soluble, tannin and flavonoid in bamboo leaves could all promote or restrain the numbers of the dominant pest populations in the canopy of bamboo forest, and so the structure of the arthropod community was affected significantly, which appeared to the promotion of the contents of flavonoid and tannin to the arthropod evenness in the canopy of forest; 3) the relationships between the undergrowths and the arthropod community appeared to the promotion of the plant species diversity in the shrub to the arthropod species diversity in the canopy and underlayer of forest, and the promotion of the plant species diversity in the liana to the arthropod evenness in the underlayer of forest; 4) changes of the undergrowths and the chemical substances' contents in the leaves due to the management measures could lead to significant changes of the arthropod community, thus, scientific management and protection of undergrowths would be regarded in the IPM of bamboo forest.