|| 要旨トップ | 目次 |||日本生態学会第64回全国大会 (2017年3月、東京) 講演要旨
一般講演（ポスター発表） P1-J-303 （Poster presentation）
Soil respiration (Rs) is the key path of carbon emission from the soil to the atmosphere in forested ecosystem. Understanding Rs is one of the key to quantify forest carbon sink. The soil respiration are influenced by many factors such as soil temperature, soil water content, and arrangements of tree individuals. Recently, significant bamboo expansions to surrounding ecosystems has been noticed. An inter-annual variation in the number of new bamboo sprouting (i.e., biennial cycles) has been reported in Moso bamboo forest, showing different culm density and arrangements every year. Thus, to quantify the representative annual value of Rs in bamboo forests, it is important to understand inter-annual variations in soil respiration of bamboo forests. The results of an experiment showed that the annual mean Rs (3.17±1.40µmol CO2 m-2 s-1) of third year was highest in the four years because of temperature sensitivity. Soil temperature was a main factor affecting the temporal variation of Rs for the four years. While, the weak relationship between soil respiration and soil water content between four years.