冷杉天然林下地表主要苔藓斑块生物量及其影响因素

调查分析了大渡河上游藓类-冷杉天然林下5种主要地表苔藓斑块(锦丝藓、赤茎藓、大羽藓、塔藓及锦丝-大羽藓)的生物量, 同时测定了各斑块相关环境因子(斑块表面气温、空气湿度、光照强度及基质湿度等)。对苔藓生物量和相关环境因子进行综合分析表明, 不同苔藓斑块的生物量有差异, 且不同斑块环境因子也表现出一定的差异性。对斑块生物量与环境因子进行相关分析显示, 苔藓斑块生物量与环境因子之间相关性较显著, 苔藓生物量特征受空气温度、空气湿度、光照强度、灌木层盖度及草本层盖度等因素影响较大。但不同环境因子对不同斑块苔藓生物量的影响水平有差异。

Major Bryophyte Patch Biomass and Relation with Environmental Factors in a Coniferous Forest of the Eastern Qinghai-Tibetan Plateau

Bryophytes are distributed in patches on the floor of primary coniferous forests in the Eastern Tibetan Plateau, but the patch character has received little attention. We investigated the Synusia biomass of major bryophyte patches — Actinothuidium hookeri, Thuidium cymbifolium, Pleurozium schreberi, Hylocomium splendens, Actinothuidium thuidium in a coniferious forest of the upper dadu River and measured environmental indices (air temperature, air humidity, sun intensity, substrate humidity, etc.) for each patch. The analysis of patch biomass and environmental factors indicated significant correlation between bryophyte biomass and air temperature, air humidity, sun intensity, scrub cover and herb cover, with the level of impact varying. A finite factor had a different influence on the finite patches, and the ecological function is a result of all factors participating together. The characteristics of bryophyte biomass resulted from comprehensive functions of all the environmental factors.