Biospheric primary production during an ENSO transition
Biospheric primary production during an ENSO transition
复制标题
DOI：
10.1126/science.1055071
复制
发表时间：
2001-03-30
期刊：
影响因子：
56.9
通讯作者：
Pollack, NH
中科院分区：
文献类型：
--
作者：
Behrenfeld, MJ;Randerson, JT;Pollack, NH
海景广域视场传感器(SeaWiFS)提供海洋浮游植物、叶绿素生物量和陆地植物采光情况的全球月度测量。这些测量可以比较海洋和陆地净初级生产力(NPP)对厄尔尼诺到拉尼娜重大转变的同时响应。1997年9月至2000年8月期间，生物圈净初级生产力每年变化6千万亿克碳(每年从111到117千万亿克碳)。在厄尔尼诺-南方涛动(ENSO)对上升流和养分可获得性影响最大的热带地区，海洋NPP的增加明显。在全球范围内，陆地NPP没有表现出明显的ENSO响应，尽管区域变化很大。
The Sea-viewing Wide Field-of-view Sensor (SeaWiFS) provides global monthly measurements of both oceanic phytoplankton chlorophyll biomass and light harvesting by land plants. These measurements allowed the comparison of simultaneous ocean and land net primary production (NPP) responses to a major El Nino to La Nina transition. Between September 1997 and August 2000, biospheric NPP varied by 6 petagrams of carbon per year (from 111 to 117 petagrams of carbon per year). Increases in ocean NPP were pronounced in tropical regions where EL Nino-Southern Oscillation (ENSO) impacts on upwelling and nutrient availability were greatest. Globally, land NPP did not exhibit a clear ENSO response, although regional changes were substantial.