Effect of monospecific and mixed Cunninghamia lanceolata plantations on microbial community and two functional genes involved in nitrogen cycling
文献类型：期刊论文
| 作者 | Liu, L ; Duan, ZH ; Xu, MK ; Hu, JC ; Wang, SL ; Hu, ZG ; Zhang, QR ; Wang, SJ |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2010 |
| 卷号 | 327期号:1-2页码:413-428 |
| 关键词 | Successive planting Cunninghamia lanceolata plantations Mixed Cunninghamia lanceolata plantations Microbial community Functional microorganism Soil properties |
| ISSN号 | 0032-079X |
| 通讯作者 | Hu, JC, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China |
| 中文摘要 | Conversion of native broadleaf forest (NF) and introduction of broadleaf species into monospecific Cunninghamia lanceolata plantations are silvicultural practices driven by the increasing demand for timber production. This study was conducted to evaluate the impacts of successive planting of C. lanceolata and mixed plantations (C. lanceolata-Michelia macclurei, CFM; C. lanceolata-Alnus cremastogyne, CFA; C. lanceolata-Kalopanax septemlobus, CFK) on microbial community diversity. Microbial biomass (MBC) was assessed using chloroform fumigation-extraction. Using denaturing gradient gel electrophoresis (DGGE), we examined the biodiversity within eubacterial (16S rRNA gene) and fungal (28S rRNA gene) species and two genes involved in N cycling: nifH and amoA. Microbial community diversities and microbial biomass decreased as NF was substituted by successive plantings of C. lanceolata plantations, whereas the trend reversed after introducing the broadleaf, M. macclurei, into pure C. lanceolata plantations. A strong positive correlation between MBC changes and total organic C (TOC), total organic N (TON), available N and extractable C (C-ext) were seen, which suggests that MBC was tightly coupled with the content of soil organic matter. The Shannon index showed that bacterial diversity and two functional genes (nifH and amoA) diversities associated with monospecific C. lanceolata plantations were lower than that of NF or mixed C. lanceolata plantations, such as CFM and CFA, whereas the opposite was seen for fungal diversity. Bacterial diversity was positively correlated with pH, TOC, TON, C-ext and NH (4) (+) -N; while fungal diversity was positively correlated with C/N ratio and negatively correlated with pH. Both nitrogen fixing and ammonia oxidizing bacterial diversities were positively correlated with pH. Thus, soil pH was not only significantly positively correlated with bacterial diversity (r = 0.502, P < 0.05), nifH gene diversity (r = 0.564, P < 0.01) and amoA gene diversity (r = 0.659, P < 0.001), but also negatively correlated with fungal diversity (r = - 0.505, P < 0.05), which seemed to be responsible for the discrimination of the soil microbial communities among these plantations. These findings suggest that different silvicultural practices have significant impacts on the soil microbial community through influences on soil chemical properties. |
| 学科主题 | Agronomy; Plant Sciences; Soil Science |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [40801093, 40801202]; Chinese Academy of Sciences [KZCXZ-YW-405] |
| 语种 | 英语 |
| WOS记录号 | WOS:000273754800033 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/53947]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu, L,Duan, ZH,Xu, MK,et al. Effect of monospecific and mixed Cunninghamia lanceolata plantations on microbial community and two functional genes involved in nitrogen cycling[J]. PLANT AND SOIL,2010,327(1-2):413-428. |
| APA | Liu, L.,Duan, ZH.,Xu, MK.,Hu, JC.,Wang, SL.,...&Wang, SJ.(2010).Effect of monospecific and mixed Cunninghamia lanceolata plantations on microbial community and two functional genes involved in nitrogen cycling.PLANT AND SOIL,327(1-2),413-428. |
| MLA | Liu, L,et al."Effect of monospecific and mixed Cunninghamia lanceolata plantations on microbial community and two functional genes involved in nitrogen cycling".PLANT AND SOIL 327.1-2(2010):413-428. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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