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中国农学通报

中国农学通报 ›› 2018, Vol. 34 ›› Issue (1): 90-97.doi: 10.11924/j.issn.1000-6850.casb17080121

所属专题： 生物技术

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

辽河口潮滩湿地不同植被土壤4种碳代谢酶活性及其与有机碳含量、pH值关系

马宁,齐继薇,刘长发,刘远,魏海峰,蔡恒江,李冰,李晋   

  1. 大连海洋大学 海洋科技与环境学院,大连,大连海洋大学 海洋科技与环境学院,大连,近岸海洋环境科学与技术辽宁省高校重点实验室,近岸海洋环境科学与技术辽宁省高校重点实验室,近岸海洋环境科学与技术辽宁省高校重点实验室,近岸海洋环境科学与技术辽宁省高校重点实验室,大连海洋大学 海洋科技与环境学院,大连,辽河口红海滩国家级海洋公园
  • 收稿日期:2017-08-29 修回日期:2017-12-12 接受日期:2017-10-25 出版日期:2018-01-12 发布日期:2018-01-12
  • 通讯作者: 刘长发
  • 基金资助:
    国家自然科学基金“辽河口潮滩湿地区域C:N:P 生态化学计量格局及其生物地球化学循环耦合驱动机制研究”(41171389)；国家海洋公益 性行业科研专项“典型海湾受损生境修复生态工程和效果评价技术集成与示范”(201305043)；辽宁省高等学校优秀科技人才支持计划“基于稳定同 位素的双台子河口滨海湿地生源要素环境生物地球化学过程”(LR2013035)。

Relationship Between 4 Carbon Metabolism Enzymes and Organic Carbon, pH Value Under Different Vegetation in Liaohe Estuary Tidal Flat Wetland

  • Received:2017-08-29 Revised:2017-12-12 Accepted:2017-10-25 Online:2018-01-12 Published:2018-01-12

摘要： 土壤碳代谢酶活性影响着土壤中含碳有机质的分解与腐殖质合成过程，进而影响土壤的“碳源汇”作用。研究了2012 年7 月、9 月和11 月采集于辽河口滨海湿地不同植被土壤蔗糖酶、过氧化氢酶、脱氢酶、多酚氧化酶4 种碳代谢酶活性及其与有机碳含量、pH值关系。结果表明：翅碱蓬单独生长区土壤蔗糖酶活性：7 月＞9 月＞11 月；芦苇单独生长区、翅碱蓬+芦苇混合生长区、芦苇+苣荬菜+艾混合生长区土壤蔗糖酶活性：9 月＞7 月＞11 月。翅碱蓬单独生长区、芦苇单独生长区、翅碱蓬+芦苇混合生长区以及芦苇+苣荬菜+艾混合生长区土壤过氧化氢酶活性：9 月＞11 月＞7 月。翅碱蓬单独生长区、芦苇单独生长区、翅碱蓬+芦苇混合生长区土壤脱氢酶活性：7 月＞9 月＞11 月；芦苇+苣荬菜+艾混合生长区土壤脱氢酶活性：7 月＞11 月＞9 月。翅碱蓬单独生长区、芦苇单独生长区、翅碱蓬+芦苇混合生长区以及芦苇+苣荬菜+艾混合生长区土壤多酚氧化酶活性：7 月＞9 月＞11 月。除土壤蔗糖酶与有机碳含量(TOC)显著正相关(R2=0.38，P=0.033，n=12)外，其他酶无显著相关关系(P＞0.05)。4 种碳代谢酶与pH值间均无显著相关关系(P＞0.05)。

Abstract: The activity of soil carbon metabolism enzymes has an effect on organic matter degradation and the production of humic substances, as well as an impact on soil carbon source-sink. The authors studied the relationship between four enzymes (sucrase, catalase, dehydrogenase and polyphenol oxidase) and organic carbon (TOC) and pH value, by collecting soil in Liaohe estuary coastal wetland in July, September and November of 2012. The results showed that the activity of sucrase in soil covered by Suaeda heteroptera was in the order of July＞ September＞ November, while that covered with Phragmites australis, S. heteroptera + P. australis and P. australis + Sonchus arvensis + Artemisia argyi was September＞ July＞ November. The order of catalase activity in soil covered with S. heteroptera, P. australis, S. heteroptera + P. australis and P. australis + S. arvensis + A. argyi was September＞ November＞ July. The order of dehydrogenase activity in soil covered with S. heteroptera, P. australis and S. heteroptera + P. australis was July＞ September＞ November, while, that in soil covered with P. australis + S. arvensis + A. argyi was July＞ November＞ September. The order of polyphenol oxidase activity in the soil under all the plant communities was July＞ September＞ November. The activities of sucrase, catalase, dehydrogenase and polyphenol oxidase were not significantly correlated with soil organic carbon and soil pH (P＞0.05), except that sucrase activity was significantly and positively correlated with soil organic carbon (R2=0.38, P=0.033, n=12).