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• 综述与专论 • 上一篇    下一篇

森林土壤呼吸对氮硫沉降的响应及机制

肖胜生1,2,胡建民1,2**,贺月玲1,汪邦稳1,2,彭琴3   

  1. (1江西省水土保持科学研究院, 南昌 330029; 2江西省土壤侵蚀与防治重点实验室, 南昌 330029; 3中国科学院地理科学与资源研究所, 北京 100101)
  • 出版日期:2014-02-10 发布日期:2014-02-10

Responses and mechanisms of forest soil respiration to nitrogen and sulfur deposition.

XIAO Sheng-sheng1,2, HU Jian-min1,2**, HE Yue-ling1, WANG Bang-wen1,2, PENG Qin3   

  1. (1Jiangxi Institute of Soil and Water Conservation, Nanchang 330029, China; 2Key Laboratory of Soil Erosion and Prevention of Jiangxi Province, Nanchang 330029, China; 3Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China)
  • Online:2014-02-10 Published:2014-02-10

摘要: 在氮沉降和硫沉降增加的背景下,土壤氮素可利用性增加和土壤酸化是多数陆地生态系统正在经历的两个重要生态学过程。氮沉降和硫沉降的增加以及两者之间的耦合作用对土壤呼吸会产生扰动,进而很大程度上可能影响到森林生态系统的碳收支。本文综述了氮沉降和硫沉降对土壤呼吸的影响及机制,分析了氮沉降与硫沉降的耦合作用,指出了目前森林生态系统土壤呼吸对氮沉降和硫沉降响应研究的薄弱环节以及今后相关领域的重点研究方向。

关键词: 磷脂脂肪酸, 杉木, 固氮树种, 酶活性

Abstract: The increased nitrogen (N) availability and soil acidification are two important ecological processes undergoing in most terrestrial ecosystems in the background of N deposition and sulfur (S) deposition. The two processes and their coupling actions obviously disturb soil respiration, further exterting important influnces on the carbon budget in forest ecosystems. Here we reviewed the effects and underlying mechanisms of N deposition and S deposition on soil respiration in forest ecosystems, analyzed the coupling effects of N deposition and S deposition, and proposed the main research directions in this field in the future.

Key words: enzyme activity., Chinese fir, PLFA, N-fixing tree species