Watershed-scale forest biomass distribution in a perhumid temperate rainforest as driven by topographic, soil, and disturbance variables.
Watershed-scale forest biomass distribution in a perhumid temperate rainforest as driven by topographic, soil, and disturbance variables.
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由地形、土壤和干扰变量驱动的半湿润温带雨林流域规模的森林生物量分布。
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
R. Edwards
中科院分区：
文献类型：
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作者：
B. Buma;J. Krapek;R. Edwards
温带雨林是地球上碳密度最高的森林生态系统，其碳储量比大多数其他森林生物群高出数倍。虽然这些C种群的气候和干扰驱动因素得到了较好的探索，但这些种群在整个流域规模上的空间分布却不太为人所知，特别是在研究极少的过湿雨林中。这项研究同时探索了阿拉斯加东南部从海洋到冰川冰原的整个流域的生物量分布。利用激光雷达和地面调查，对整个景观中的生物量进行了建模，并对其分布进行了统计描述。在这个尺度上(控制海拔)生物量分布的主要驱动因素是流经地貌的水流：蓄水量较高的地区通常生物量较低(通常为10 mg·ha-1)，而排水良好的地区支持生物量接近950 mg·ha-1。这种关系在所有海拔都很强；只有河岸地区的生物量才能达到950 mg·ha-1。
Temperate rainforests are the most carbon dense forest ecosystem on the planet, with C stocks several times higher than most other forested biomes. While climatic and disturbance drivers of these C stocks are relatively well explored, the spatial distribution of those stocks at the scale of entire watersheds is less well known, particularly in perhumid rainforests where research has been minimal. This study explored biomass distributions across an entire watershed simultaneously, from ocean to glacial icefields, in Southeast Alaska. Utilizing LiDAR and ground surveys, biomass was modelled throughout the landscape and distributions are described statistically. The dominant driver of biomass distributions at this scale (controlling for elevation) was the flow of water through the landscape: areas of higher water accumulation typically had low biomass (often <10 Mg·ha–1), whereas well-drained areas supported biomass approaching 950 Mg·ha–1. This relationship was strong at all elevations; only riparian locati...