摘要
凋落物分解是生态系统物质循环和能量流动的主要环节,对土壤有机质的形成和养分释放速率有着重要意义。对国内外在凋落物分解方面的研究进行综述,并结合森林、草地、荒漠3种不同陆地生态系统类型中凋落物的研究动态,阐述了凋落物分解的过程、影响效应及从凋落物本身的理化性质和CO2浓度升高、气候因子、土壤特性等方面综合分析了影响凋落物分解的主要因子。在此基础上对凋落物分解的未来研究方向进行展望,得出长期定位研究、建立凋落物分解模型等方面将会成为今后研究的热点。
As a main linkage between material cycle and energy flow in ecosystem,the litter decomposition plays a very important role in soil organic matter formation and nutrient release rate.The research progress on litter decomposition in domestic and overseas were reviewed,and combining with its research trends in three different types of terrestrial ecosystems（forest,grassland and desert）,the process of litter decomposition and its affecting effect were described,and the main factors which affect litter decomposition rate from different aspects including physical and chemical properties of litter,CO2 concentration,climatic factors and soil properties were analyzed as well.It could be concluded that the long term and fixed on-site research and the establishment of decomposition model would be the research hot pots in the future.
出处
《草业科学》
CAS
CSCD
北大核心
2010年第8期44-51,共8页
Pratacultural Science
基金
国家重点基础研究发展计划"973"项目(2009CB421303)
中国科学院知识创新工程重要方向性项目(KZCX2-YW-431-3)
国家自然科学基金(30870426)
关键词
陆地生态系统
凋落物
分解
研究进展
terrestrial ecosystems
litter
decomposition
research progress
