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。
The increased nitrogen (N) availability and soil acidification are two important ecolog- ical 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 respira- tion, further exterting important influnces on the carbon budget in forest ecosystems. Here we re- viewed 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 pro- posed the main research directions in this field in the future.
出处
《生态学杂志》
CAS
CSCD
北大核心
2014年第2期495-501,共7页
Chinese Journal of Ecology
基金
国家自然科学基金项目(41303064
41201276)
江西省自然科学基金项目(20122BAB213016)
江西省科技支撑计划项目(20111122140001)
江西省水利科技重点推广计划项目(TG201103)资助
关键词
土壤呼吸
氮沉降
硫沉降
耦合作用
森林生态系统
soil respiration
nitrogen deposition
sulfur deposition
coupling action
forest eco- system.