@article{oai:doshisha.repo.nii.ac.jp:00025904, author = {バッタ , バルラム ケイ and Bhatta, Balram K. and Osono, Takashi and 大園, 享司 and 武田, 博清 and Takeda, Hiroshi}, issue = {3}, journal = {同志社大学ハリス理化学研究報告, The Harris science review of Doshisha University}, month = {Oct}, note = {冷温帯林において、9樹種の落葉分解にともなう窒素動態を18ヶ月にわたって調べ、窒素動態に及ぼす炭水化物の含有量の影響を評価した。窒素の変化パターンは、落葉の積算重量減少に対する窒素濃度の相対的な変化率(NCIR)として評価した。9樹種の落葉の残存重量は指数的に減少し、18ヶ月後には初期重量の2.4〜40.7%となった。指数関数に当てはめたときの傾き(オルソンのk)は、0.74〜2.45/年であった。窒素の残存量は分解にともなって概ね減少したが、落葉重量に対する窒素濃度は一般に、落葉の積算重量減少に対して直線的に増加した(すなわち、NCIRは正の値)。9樹種のNCIRと、落葉の初期炭水化物濃度とのあいだに有意な正の相関関係が認められた。このことは、炭水化物が、分解者菌類が落葉に窒素を保持するための主要なエネルギー源となっていることを示唆している。, Nitrogen (N) dynamics in decomposing leaf litter were elucidated for nine tree species over an 18-month period in a cool temperate forest and the effect of carbohydrate content on the N dynamics was evaluated. The pattern of changes in N was quantified in terms of the relative change of N content with respect to the accumulated mass loss of litter (known as Nitrogen Content Increase Rate or NCIR). The remaining mass of leaf litter of the nine tree species declined exponentially during the decomposition, and 2.4% to 40.7% of the original mass remained at the end of the 18-month period. Decomposition rate (as Olson's k) ranged from 0.74 to 2.45 year^-1. The remaining mass of N in leaf litter generally decreased with the decomposition, whereas the relative N content of leaf litter generally increased linearly with the accumulated mass loss of litter (i.e., NCIR values were positive). The NCIR of leaf litter was significantly and positively correlated with initial total carbohydrate content of litter, suggesting that carbohydrates served as a major energy source for decomposer fungi to retain N in decomposing litter., 抄録(英語)の^-1は上付き文字, application/pdf}, pages = {118--125}, title = {Carbohydrate control of nitrogen dynamics in decomposing leaf litter of temperate tree species}, volume = {58}, year = {2017}, yomi = {オオソノ, タカシ and タケダ, ヒロシ} }