Low Carbon sink capacity of Red Sea mangroves.
Low Carbon sink capacity of Red Sea mangroves.
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红海红树林的低碳水槽容量。
DOI：
10.1038/s41598-017-10424-9
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发表时间：
2017-08-29
影响因子：
4.6
通讯作者：
Irigoien X
中科院分区：
文献类型：
--
作者：
Almahasheer H;Serrano O;Duarte CM;Arias-Ortiz A;Masque P;Irigoien X
红树林的白骨壤海洋占据约135平方公里的红海，并代表了最重要的植被群落之一，否则干旱和贫营养区。我们评估了土壤有机碳（Corg）股票，土壤增长率（SAR; mm y-1）和土壤Corg固存率（g Corg m-2 yr-1）在10个红树林网站沿着沙特中部红海海岸。红海红树林的土壤Corg密度和储量是全球报告的最低值之一，平均值分别为4 ± 0.3 mg Corg cm−3和43 ± 5 Mg Corg ha−1（1米厚的土壤）。长（千年）和短（上世纪）时间尺度下，柯格的螯合率估计分别为3 ± 1和15 ± 1克柯格/米-2/年-1，与更潮湿生物区的红树林栖息地相比，这一比率也相对较低。相比之下，红海中部红树林土壤的增长率在全球红树林报告的范围内。红海红树林的Corg汇容量相对较低，可能是由于极端的环境条件，如降雨量少，养分限制和高温，降低了红树林的生长速度，增加了土壤呼吸速率。
Mangroves forests of Avicennia marina occupy about 135 km2 in the Red Sea and represent one of the most important vegetated communities in this otherwise arid and oligotrophic region. We assessed the soil organic carbon (Corg) stocks, soil accretion rates (SAR; mm y−1) and soil Corg sequestration rates (g Corg m−2 yr−1) in 10 mangrove sites within four locations along the Saudi coast of the Central Red Sea. Soil Corg density and stock in Red Sea mangroves were among the lowest reported globally, with an average of 4 ± 0.3 mg Corg cm−3 and 43 ± 5 Mg Corg ha−1 (in 1 m-thick soils), respectively. Sequestration rates of Corg, estimated at 3 ± 1 and 15 ± 1 g Corg m−2 yr−1 for the long (millennia) and short (last century) temporal scales, respectively, were also relatively low compared to mangrove habitats from more humid bioregions. In contrast, the accretion rates of Central Red Sea mangroves soils were within the range reported for global mangrove forests. The relatively low Corg sink capacity of Red Sea mangroves could be due to the extreme environmental conditions such as low rainfall, nutrient limitation and high temperature, reducing the growth rates of the mangroves and increasing soil respiration rates.
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影响因子：
18.3
作者：
Donato, Daniel C.;Kauffman, J. Boone;Kanninen, Markku
通讯作者：
Kanninen, Markku
影响因子：
3.7
作者：
Almahasheer, Hanan;Duarte, Carlos M.;Irigoien, Xabier
通讯作者：
Irigoien, Xabier
影响因子：
2.3
作者：
Baskaran, M.;Bianchi, T. S.;Filley, T. R.
通讯作者：
Filley, T. R.
影响因子：
4.9
作者：
Duarte, CM;Middelburg, JJ;Caraco, N
通讯作者：
Caraco, N
影响因子：
2.8
作者：
Almahasheer, Hanan;Aljowair, Abdulaziz;Irigoien, Xabier
通讯作者：
Irigoien, Xabier