首页> 外文会议>International Conference on Energy, Environment and Sustainable Development >Effects of nitrogen deposition on soil microbial biomass, microbial functional diversity and enzyme activities in fir plantations of subtropical China
【24h】

Effects of nitrogen deposition on soil microbial biomass, microbial functional diversity and enzyme activities in fir plantations of subtropical China

机译:氮沉积对亚热带杉木种植园土壤微生物生物量,微生物功能多样性和酶活性的影响

获取原文

摘要

The effects of simulated nitrogen (N) deposition on soil microbial biomass, microbial functional diversity and enzyme activities involved in C cycling (sucrase, β-glucosidase, cellulose, amylase, polyphenol oxidase and peroxidase) were studied in southeast Chinese fir plantation (Cunninghamialanceolata (Lamb.)). All soil parameters measured decreased with increasing soil depth. The results indicated that low N (N1) deposition could accelerate soil microbial biomass and functional diversity, but moderate or high N deposition (N2, N3) restrain them. Nitrogen additions promoted soil sucrase, β-glucosidase and cellulase activities, while inhibited soil amylase, polyphenol oxidase and peroxidase activities to some extent, suggesting that decomposition of labile and recalcitrant organic matter were promoted and restricted by extra N deposition, respectively. Changes in microbial community biomass and function under extra N deposition indicated soil ecosystems experienced functional shifts under the current or future condition of human-accelerated N supply.
机译:在东南中国杉木植物中研究了模拟氮(N)沉积对土壤微生物测定法,参与C循环(蔗糖酶,β-葡糖苷酶,纤维素,淀粉酶,多酚氧化酶,多酚氧化酶和过氧化物酶)的效果羊肉。))。随着土壤深度的增加,测量的所有土壤参数都会降低。结果表明,低N(N1)沉积可以加速土壤微生物量和功能多样性,但中等或高N沉积(N2,N3)抑制它们。氮添加促进土壤蔗糖酶,β-葡糖苷酶和纤维素酶活性,同时在一定程度上抑制土壤淀粉酶,多酚氧化酶和过氧化物酶活化酶,表明促进了不稳定的有机物质的分解并通过额外的n沉积来促进并限制。微生物群落生物量和额外N沉积的功能的变化表明土壤生态系统在人类加速N供应的当前或未来条件下经历了功能变化。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号