Biogeochemical Impacts of Dust on the Global Carbon Cycle
Biogeochemical Impacts of Dust on the Global Carbon Cycle
复制标题
灰尘对全球碳循环的生物地球化学影响
DOI：
10.1007/978-94-017-8978-3_14
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发表时间：
2014
影响因子：
--
通讯作者：
K. Hunter
中科院分区：
文献类型：
--
作者：
T. Jickells;P. Boyd;P. Boyd;K. Hunter
粉尘供应可直接影响陆地和海洋生态系统的初级生产，从而影响当地和全球的生物地球化学。对土地的影响似乎主要是因为灰尘为磷有限的生态系统提供了磷供应，从而直接增加了初级生产量，还缓解了固氮对磷的限制，从而也增加了初级生产量。作为磷源的尘埃对陆地热带系统的影响似乎最大，这既反映了全球尘埃供应模式，也反映了这些环境中土壤发育和生物地球化学循环的基本生物地球化学。在一些环境中，特别是加勒比海岛屿，粉尘供应也可能提供土壤本身的很大一部分。在海洋生态系统中，灰尘最重要的作用似乎是铁的来源。这种来自粉尘的铁供应直接增加了高硝酸盐、低叶绿素地区地表水的初级生产量，那里的初级生产量是有限的铁。这些地区主要位于高纬度地区，包括广阔的南大洋。粉尘来源的铁供应在缓解热带表层海洋水域固氮对铁的限制方面也发挥了重要作用，从而增加了这些地区的初级生产。
Dust supply can directly affect primary production in terrestrial and marine ecosystems and thereby affect local and planetary biogeochemistry. The impact on land appears to be primarily in terms of dust providing a supply of phosphorus to phosphorus-limited ecosystems, thereby increasing primary production directly, and to also relieve phosphorus limitation of nitrogen fixation, which then also allows increased primary production. The impact of dust as a phosphorus source seems to have the biggest impacts in terrestrial tropical systems, reflecting both the global dust supply pattern as well as the fundamental biogeochemistry of soil development and biogeochemical cycling in these environments. Dust supply can also in some environments, particularly Caribbean islands, provide a significant part of the soil itself. In marine ecosystems, the most important role of dust appears to be a source of iron. This dust-derived iron supply acts to directly increase primary production in surface waters of high-nitrate low-chlorophyll regions where primary production is iron limited. These areas are predominantly at high latitudes and include the vast Southern Ocean. The dust-derived iron supply also plays an important role in relieving iron limitation of nitrogen fixation in tropical surface ocean waters and thereby increases primary production in these areas.
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影响因子：
5
作者：
E. Sholkovitz;P. Sedwick;T. Church;A. Baker;Claire F. Powell
通讯作者：
E. Sholkovitz;P. Sedwick;T. Church;A. Baker;Claire F. Powell
影响因子：
5.2
作者：
Nielsdottir, Maria C.;Moore, Christopher Mark;Achterberg, Eric P.
通讯作者：
Achterberg, Eric P.
影响因子：
5.2
作者：
S. Ussher;E. Achterberg;Claire F. Powell;A. Baker;T. Jickells;R. Torres;P. Worsfold
通讯作者：
S. Ussher;E. Achterberg;Claire F. Powell;A. Baker;T. Jickells;R. Torres;P. Worsfold
影响因子：
18.3
作者：
Moore, C. Mark;Mills, Matthew M.;Woodward, E. Malcolm S.
通讯作者：
Woodward, E. Malcolm S.