Sequestration of P fractions in the soils of an incipient ferralisation chronosequence on a humid tropical volcanic island.
Sequestration of P fractions in the soils of an incipient ferralisation chronosequence on a humid tropical volcanic island.
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在潮湿的热带火山岛上的初始铁甲序列号土壤中p级分的静止。
DOI：
10.1186/s40529-021-00326-5
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发表时间：
2021-12-02
影响因子：
3.4
通讯作者：
Hallett S
中科院分区：
文献类型：
--
作者：
Chiu CY;Baillie I;Jien SH;Hallett L;Hallett S
磷（P）是许多成熟热带森林的限制性营养元素。随着土壤年龄的增长，磷储量下降的生态意义因大部分剩余的磷逐渐被隔离而加剧。然而，如何以及在哪里磷是封存在热带森林土壤老化过程中的细节仍然不清楚。我们研究了不同形式的铁和铝的倍半氧化物和赫德利分数的P在土壤中的一个初始的铁铝质年代序列上的一个海拔系列的缓坡台阶上的绿岛，台湾东南沿海。这些土壤中含有少量的易交换的P.的倍半氧化物变量，只有Fe和Al堆积显着增加与工作台海拔/土壤年龄，表明ferralisation的趋势是弱的。土壤磷主要以碱解态和残渣态为主，不稳定性较低。与倍半氧化物相关性最好的P组分是NaHCO 3和NaOH提取物的有机组分。无定形倍半氧化物，FeO和Alo，是与P组分相关性最好的形式。相当大比例的不稳定的P似乎是有机的，并与铝在有机铝络合物。磷螯合的进展似乎比铁化的化学和矿物学指标稍慢。
Phosphorus (P) is the limiting nutrient in many mature tropical forests. The ecological significance of declining P stocks as soils age is exacerbated by much of the remaining P being progressively sequestered. However, the details of how and where P is sequestered during the ageing in tropical forest soils remains unclear. We examined the relationships between various forms of the Fe and Al sesquioxides and the Hedley fractions of P in soils of an incipient ferralitic chronosequence on an altitudinal series of gently sloping benches on Green Island, off the southeastern coast of Taiwan. These soils contain limited amounts of easily exchangeable P. Of the sesquioxide variables, only Fe and Al crystallinities increased significantly with bench altitude/soil age, indicating that the ferralisation trend is weak. The bulk of the soil P was in the NaOH and residual extractable fractions, and of low lability. The P fractions that correlated best with the sesquioxides were the organic components of the NaHCO3 and NaOH extracts. The amorphous sesquioxides, Feo and Alo, were the forms that correlated best with the P fractions. A substantial proportion of the labile P appears to be organic and to be associated with Alo in organic-aluminium complexes. The progression of P sequestration appears to be slightly slower than the chemical and mineralogical indicators of ferralisation.
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影响因子：
4.2
作者：
Baumann K;Shaheen SM;Hu Y;Gros P;Heilmann E;Morshedizad M;Wang J;Wang SL;Rinklebe J;Leinweber P
通讯作者：
Leinweber P
DOI：
10.1080/00103629409369160
发表时间：
1994-01-01
影响因子：
1.8
作者：
CAJUSTE, LJ;LAIRD, RJ;CAJUSTE, L
通讯作者：
CAJUSTE, L
影响因子：
--
作者：
GHANI, MO;ISLAM, MA
通讯作者：
ISLAM, MA
影响因子：
4.2
作者：
Jien, S. -H.;Baillie, I.;Chiu, C. -Y.
通讯作者：
Chiu, C. -Y.
影响因子：
30.7
作者：
Hagerty, Shannon B.;van Groenigen, Kees Jan;Dijkstra, Paul
通讯作者：
Dijkstra, Paul