摘要
红树林生态系统出现于热带和亚热带的潮间带，是一个脆弱或敏感的生态系统，受到陆相和海相的双重影响，可能是全球气候变化影响的早期指示者。气候变化引起海平面升高的速率在９～１２ｃｍ／１００ａ时或超过红树林底质的沉积速率时，红树林就受到胁迫甚至消亡。平均气温上升可能造成红树林种类组成的变化。一定限度的升温有利红树植物的生长发育，但太高温度不利其叶的形成和光合作用。温度的累积作用会有相当大的影响，并通过土壤呼吸的刺激产生多种反馈机制。降水方式的变化引起土壤或水的盐度改变而对红树林产生影响。另外还讨论了我国开展红树林生态系统与气候变化研究的内容和方法建议，包括红树林湿地温室气体排放的动态，ＣＯ＿２水平提高对红树林生态系统的影响等。
Mangrove ecosystems found in the intertidal regions of tropical and subtropical areasare Ecoton or Eco-sensitive zones. They are likely to be early indicators of the effects ofclimate change. If the rate of sea-level rise is 9～12cm per 100 years or exceeds the rate ofmangrove sediment accretion,mangrove may be under stress or collapse. If the average airtemperature increase,the species composition of mangrove forests may change. Mangroveplant development may be accelerated by limited temperature increase,however too hightemperature is not beneficial to mangrove leaf development and photosynthesis. Tempera-ture increase could become significant when the cumulative effects of temperature on plantdevelopment,and could cause some feedback mechanisms via soil respiration stimulation. The change of precipitation patterns in mangrove area may effect the mangrove ecosystemsthrough influencing soil or water salinity,Including research methods,some researchcountermeasure suggestions on relationship between mangrove ecosystems of China andclimate change are discussed,such as dynamics of greenhouse gases released from man-grove wet lands and effects of elevated CO_2 on mangrove ecosystems,etc.
出处
《地球科学进展》
CAS
CSCD
1995年第4期341-347,共7页
Advances in Earth Science
关键词
全球气候变化
红树林
生态系统
影响
Global climate change,Mangrove ecosystems,Countermeasure sugges- tion.
