| 短期增温对中亚热带杉木人工幼林土壤氮磷耦合作用的影响 |
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| 引用本文： | 赵盼盼,高金涛,郑蔚,贝昭贤,刘志江,熊德成,叶旺敏,曾晓敏,袁萍,杨舟然,陈岳民,杨玉盛.短期增温对中亚热带杉木人工幼林土壤氮磷耦合作用的影响[J].生态学报,2018,38(8):2829-2837. |
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| 作者姓名： | 赵盼盼 高金涛 郑蔚 贝昭贤 刘志江 熊德成 叶旺敏 曾晓敏 袁萍 杨舟然 陈岳民 杨玉盛 |
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| 作者单位： | 福建师范大学地理科学学院;湿润亚热带山地生态国家重点实验室培育基地 |
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| 基金项目： | 国家自然科学基金项目（31670620）;海峡联合基金项目（U1505233）;"973"计划项目（2014CB954003） |
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| 摘 要： | 全球变暖引起陆地生态系统和整个生物圈一系列生态问题,未来全球平均气温的持续增加将使这些问题进一步加剧。目前增温、氮沉降和森林更新方式对中亚热带土壤氮磷等养分的影响已有部分研究,但增温对亚热带森林的氮磷耦合作用的影响仍然未知。以中亚热带杉木(Cunninghamia lanceolate)幼苗为研究对象,设置埋设电缆以加热土壤增温实验(增温幅度(5±0.5)℃),研究短期增温对土壤含水量、微生物生物量氮(MBN)、微生物生物量磷(MBP)、土壤氮磷养分,以及氮(N)、磷(P)耦合作用的影响。结果表明:短期增温对全氮、全磷无显著影响;增温第1年显著提高了有效氮、铵态氮(NH_4~+)和有效磷的含量,显著降低了MBN含量。增温第2年,土壤中有效磷、NH_4~+和MBP含量显著下降;短期增温虽然对土壤全N/P,有效N/P的影响不显著,但是增温使铵态氮/硝态亚硝态氮(NH_4~+/(NO_3~-+NO_2~-))显著降低;此外,增温显著降低了MBN/MBP,缓解了微生物对磷的限制。相关性分析表明,耦合作用不仅受N和P之间相互作用的影响,也受土壤温度、水分含量等其他因素的影响。研究表明,短期增温并未对中亚热带杉木人工幼林土壤氮磷耦合作用产生显著影响,但增温后降低了有效氮、有效磷的含量。因此,在未来全球变暖背景下,研究结果为中亚热带森林生态系统的的健康发展和科学管理提供重要的理论依据。
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| 关 键 词： | 增温 土壤氮 土壤磷 耦合作用 中亚热带 |
| 收稿时间： | 2017/5/16 0:00:00 |
| 修稿时间： | 2017/12/7 0:00:00 |
Influence of short-term warming on the coupling mechanism between soil nitrogen and phosphorus in a young Cunninghamia lanceolata stand in mid-subtropical China |
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| ZHAO Panpan,GAO Jingtao,ZHENG Wei,BEI Zhaoxian,LIU Zhijiang,XIONG Decheng,YE Wangmin,ZENG Xiaomin,YUAN Ping,YANG Zhouran,CHEN Yuehmin and YANG Yusheng.Influence of short-term warming on the coupling mechanism between soil nitrogen and phosphorus in a young Cunninghamia lanceolata stand in mid-subtropical China[J].Acta Ecologica Sinica,2018,38(8):2829-2837. |
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| Authors: | ZHAO Panpan GAO Jingtao ZHENG Wei BEI Zhaoxian LIU Zhijiang XIONG Decheng YE Wangmin ZENG Xiaomin YUAN Ping YANG Zhouran CHEN Yuehmin and YANG Yusheng |
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| Institution: | School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;Cultivation Base of State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;Cultivation Base of State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;Cultivation Base of State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;Cultivation Base of State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;Cultivation Base of State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;Cultivation Base of State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;Cultivation Base of State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;Cultivation Base of State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;Cultivation Base of State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;Cultivation Base of State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China,School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;Cultivation Base of State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China and School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;Cultivation Base of State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China |
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| Abstract: | |
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| Keywords: | warming soil nitrogen soil phosphorus coupling mechanism mid-subtropical |
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