| 氮沉降对中亚热带米槠天然林微生物生物量及酶活性的影响 |
| |
| 引用本文： | 周嘉聪,刘小飞,郑永,纪宇皝,李先锋,徐鹏程,陈岳民,杨玉盛. 氮沉降对中亚热带米槠天然林微生物生物量及酶活性的影响[J]. 生态学报, 2017, 37(1): 127-135 |
| |
| 作者姓名： | 周嘉聪 刘小飞 郑永 纪宇皝 李先锋 徐鹏程 陈岳民 杨玉盛 |
| |
| 作者单位： | 福建师范大学地理科学学院, 福州 350007;福建师范大学湿润亚热带山地生态国家重点实验室培育基地, 福州 350007,福建师范大学地理科学学院, 福州 350007;福建师范大学湿润亚热带山地生态国家重点实验室培育基地, 福州 350007,福建师范大学地理科学学院, 福州 350007;福建师范大学湿润亚热带山地生态国家重点实验室培育基地, 福州 350007,福建师范大学地理科学学院, 福州 350007;福建师范大学湿润亚热带山地生态国家重点实验室培育基地, 福州 350007,福建师范大学地理科学学院, 福州 350007;福建师范大学湿润亚热带山地生态国家重点实验室培育基地, 福州 350007,福建师范大学地理科学学院, 福州 350007;福建师范大学湿润亚热带山地生态国家重点实验室培育基地, 福州 350007,福建师范大学地理科学学院, 福州 350007;福建师范大学湿润亚热带山地生态国家重点实验室培育基地, 福州 350007,福建师范大学地理科学学院, 福州 350007;福建师范大学湿润亚热带山地生态国家重点实验室培育基地, 福州 350007 |
| |
| 基金项目： | 国家自然科学基金重点资助项目（31130013）；国家“973”计划资助项目（2014CB954003） |
| |
| 摘 要： | 氮沉降对土壤微生物的扰动可能会影响土壤的养分循环,然而关于中亚热带天然林土壤微生物及酶活性对氮沉降的响应鲜有报道。通过3 a的氮沉降模拟实验,研究中亚热带米槠天然林土壤的理化性质、土壤微生物量及土壤酶活性的响应。结果表明:氮沉降并未引起土壤的有机碳和总氮显著性变化;高氮(80 kg N hm~(-2)a~(-1))处理下,土壤p H下降,出现酸化现象;低氮(40 kg N hm~(-2)a~(-1))处理促进淋溶层(A层)中土壤纤维素分解酶(β-葡萄糖苷酶和纤维素水解酶)和木质素分解酶(多酚氧化酶和过氧化物酶)活性升高,同时促进土壤微生物生物量碳、氮的积累。冗余分析(RDA)表示,可溶性有机碳(DOC)是驱动A层土壤酶活性的重要环境因子;而在淀积层(B层),这4种酶活性并未发生显著性差异。施氮处理后,A、B层中土壤的酸性磷酸酶活性增加(P0.05)。研究表明:低水平氮沉降增加了土壤微生物生物量碳氮含量以及土壤有机碳分解相关酶活性,从而加速了土壤碳周转;这为未来氮沉降增长背景下,探索中亚热带天然林土壤碳源汇问题提供了依据。
|
| 关 键 词： | 氮沉降 微生物生物量 酶活性 米槠天然林 |
| 收稿时间： | 2016-08-18 |
| 修稿时间： | 2016-11-04 |
Effects of nitrogen deposition on soil microbial biomass and enzyme activities in Castanopsis carlesii natural forests in subtropical regions |
| |
| ZHOU Jiacong,LIU Xiaofei,ZHENG Yong,JI Yuhuang,LI Xianfeng,XU Pengcheng,CHEN Yuemin and YANG Yusheng. Effects of nitrogen deposition on soil microbial biomass and enzyme activities in Castanopsis carlesii natural forests in subtropical regions[J]. Acta Ecologica Sinica, 2017, 37(1): 127-135 |
| |
| Authors: | ZHOU Jiacong LIU Xiaofei ZHENG Yong JI Yuhuang LI Xianfeng XU Pengcheng CHEN Yuemin YANG Yusheng |
| |
| Affiliation: | School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China and School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China |
| |
| Abstract: | |
| |
| Keywords: | nitrogen deposition microbial biomass enzyme activities Castanopsis carlesii natural forest |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《生态学报》浏览原始摘要信息 |
|
点击此处可从《生态学报》下载全文 |
|
