中国黄山凋落物降解与温度关系在针叶林与阔叶林之间的差异_英文_.pdf

Journal of Forestry Research, 18(4): 291–297 (2007) 291 DOI: 10.1007/s11676-007-0058-0 Variation in litter decomposition-temperature relationships between co- niferous and broadleaf forests in Huangshan Mountain, China HE Xing-bing 1,2, SONG Fu-qiang 3, ZHANG Peng 1, LIN Yong-hui 2, TIAN Xing-jun 1,*, REN Li-li 1, CHEN Cheng 1, LI Xiao-na1, Tan Hai-xia4 1School of Life Science, Nanjing University, Nanjing 210093, P. R. China 2College of Resources and Planning Sciences, Jishou University, Zhangjiajie 427000, P. R. China 3College of Life Science, Heilongjiang University, Harbin 150000, P. R. China 4Environmental Management College of China, Qinhuangdao 066004, P.R. China Abstract: A study was conducted to identify the differences in the decompositions of leaf litter, lignin and carbohydrate between coniferous forest and broadleaf forest at 20°C and 30°C in Huangshan Mountain, Anhui Province, China. Results showed that at 20°C mass loss of leaf litter driven by microbial decomposers was higher in broadleaf forest than that in coniferous forest, whereas the difference in mass loss of leaf litter was not significant at 30°C. The temperature increase did not affect the mass loss of leaf litter for coniferous forest treatment, but significantly reduced the decomposition rate for broadleaf forest treatment. The functional decomposers of microorganism in broadleaf for- est produced a higher lignin decomposition rate at 20°C, compared to that in coniferous forest, but the difference in lignin decomposition was not found between two forest types at 30°C. Improved temperature increased the lignin decomposition for both broadleaf and con