为了解高温干旱对毛竹林下植被数量特征、群落结构变化特点的影响及群落演变趋势,对2013年安吉县高温干旱受灾毛竹林林下植被进行了调查。结果表明：受高温干旱灾害影响的毛竹林的林下植被以喜阳类植物为主,平均盖度达0.95,物种丰富度为44,高度达1.20 m；而未受灾毛竹林的林下植被以喜弱光或喜阴类植物为主,平均盖度为0.72,物种丰富度为42,高度仅为0.66 m；受灾毛竹林一般位于立地条件较差的地区,经营效益低下,且受灾后毛竹林的自然恢复速率缓慢,而林下植被的自然生态恢复能力较强,并有较快地从低矮阴性或喜弱光的草灌逐渐向高大喜阳的乔灌木演化的趋势。%In order to understand the influence of high temperature drought on bamboo understory vegetation quantita-tive characteristics and community structure changes, and probe into the community evolution trend, this paper investi-gated the understory vegetation of Moso forest at Anji County in 2013 when a high-temperature drought happened. The results showed most understory vegetation of Moso forest affected by high temperature are sun plant, with average cov-erage at 0. 95, species richness at 44, height at 120 m; however, those of the Moso forest unaffected by heat and drought damage are all shade requiring plants, with average coverage at 0. 72, species richness at 42 and height only at 0. 66. The Moso forest affected by high temperature was mostly in the area with a poor condition with low management benefit, and the nature recovery rate of these forest was slow but its understory vegetation had relatively strong capacity for nature ecological restoration and showed the quick trend from short shade requiring plants or light sunshine plant to high sun-requiring trees and shrubs.
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