文献类型：期刊文献

英文题名：Contrasting effects of chinese fir plantations of different stand ages on soil enzyme activities and microbial communities

作者：Wang, Chaoqun[1,2,3] Xue, Lin[2,3,4] Dong, Y.[1,2,3] Hou, Lingyu[1,2,3] Wei, Yihui[1,2,3] Chen, Jiaqi[1,2,3] Jiao, Ruzhen[1,2,3]

第一作者：Wang, Chaoqun

通信作者：Jiao, Ruzhen

机构：[1] Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China; [2] State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, 100091, China; [3] Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Chinese Academy of Forestry, Beijing, 100091, China; [4] Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing, 100091, China

年份：2018

卷号：10

期号：1

外文期刊名：Forests

收录：EI(收录号：20190106344510);Scopus(收录号：2-s2.0-85059404227)

基金：Funding: This research was funded by State Key Research Development Program of China (Grant number 2016YFD0600300). This study is a part of the project entitled “Study on efficient cultivation technology of Chinese fir plantation”.

语种：英文

外文关键词：Ecosystems - Enzyme activity - Enzymes - Forestry - Fungi - Microorganisms - Physicochemical properties

摘要：Soil enzymes and microbial communities are key factors in forest soil ecosystem functions and are affected by stand age. In this study, we studied soil enzyme activities, composition and diversity of bacterial and fungal communities and relevant physicochemical properties at 0-10 cm depth (D1), 10-20 cm depth (D2) and 20-30 cm depth (D3) soil layers in 3-(3a), 6-(6a), 12-(12a), 18-(18a), 25-(25a), 32-(32a) and 49-year-old (49a) Chinese fir plantations to further reveal the effects of stand age on soil biotic properties. Spectrophotometry and high-throughput sequencing was used to assess the soil enzyme activity and microbial community composition and diversity of Chinese fir plantation of different stand ages, respectively. We found that soil catalase activity increased as the stand age of Chinese fir plantations increased, whereas the activities of urease, sucrase and β-glucosidase in 12a, 18a and 25a were lower than those in 6a, 32a and 49a. Shannon and Chao1 indices of bacterial and fungal communities first decreased gradually from 6a to 18a or 25a and then increased gradually from 25a to 49a. Interestingly, the sucrase and β-glucosidase activities and the Shannon and Chao1 indices in 3a were all lower than 6a. We found that the relative abundance of dominant microbial phyla differed among stand ages and soil depths. The proportion of Acidobacteria first increased and then decreased from low forest age to high forest age, and its relative abundance in 12a, 18a and 25a were higher than 3a, 32a and 49a, but the proportion of Proteobacteria was opposite. The proportion of Ascomycota first decreased and then increased from 6a to 49a, and its relative abundance in 12a, 18a and 25a was lower than 3a, 6a, 32a and 49a. Our results indicate that soil enzyme activities and the richness and diversity of the microbial community are limited in the middle stand age (from 12a to 25a), which is important for developing forest management strategies to mitigate the impacts of degradation of soil biological activities. ? 2018 by the authors.