Inorganic phosphorus fractions in the rhizosphere of xerophytic shrubs in the Alxa Desert

Ma, Binyun; Zhou, Zhi-Yu; Zhang, C.-P.; Zhang, G.; Hu, Yunlong

doi:10.1016/j.jaridenv.2008.08.006

Cited by 30 publications

(25 citation statements)

References 42 publications

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“…the release of Ca 2+ ions [19]. Therefore, in the Shapotou area, the total Ca 2+ content in the soil was relatively high, resulting in a large reservoir of exchangeable calcium [13] that directly leads to the formation of the insoluble Ca-P phase [10,20], e.g., dicalcium phosphate and octacalcium phosphate [11,21]. On the other hand, with fixation of the dune, the soil CaCO 3 content in Shapotou increased significantly [17], which increased soil pH and precipitated Ca 2+ and phosphorus [10,22], decreasing availability of soil phosphorus [23].…”

Section: Discussionmentioning

confidence: 99%

“…There is a strong relationship between phosphorus use efficiency and plant drought resistance [32]; therefore, A. frigida has greater phosphorus-use efficiency than A. ordosica. Moreover, there are differences in root mortality and root exudation between A. ordosica and A. frigida [21]. All of these differences resulted in the increase in the density of A. ordosica and the decrease in the density of A. frigida with increasing soil CaCO 3 /AP ratios.…”

Section: 1mentioning

confidence: 97%

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Effects of soil stoichiometry of the CaCO3/available phosphorus ratio on plant density in Artemisia ordosica communities

Zhao

Xue

et al. 2011

Chin. Sci. Bull.

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In soil, CaCO 3 can reduce the availability of phosphorus in arid and semi-arid regions, thereby influencing plant growth. However, the effects of soil stoichiometry of the CaCO 3 /available phosphorus ratio (CaCO 3 /AP ratio) on plant density are unknown. In this study, we examined 4 Artemisia ordosica communities located in arid and semi-arid regions, and performed a pot experiment with an orthogonal design to examine the relationships between the soil CaCO 3 /AP ratio and plant density. The results showed that the soil stoichiometry of the CaCO 3 /AP ratio had a greater effect on growth of A. ordosica than either CaCO 3 or AP as single factor. The influence of the soil CaCO 3 /AP ratio on density of A. ordosica was related to the climatic zone and the types and/or amplitudes of increases in the soil CaCO 3 /AP ratio. When the soil CaCO 3 /AP ratio was within the same amplitude and was less than 2.5, the A. ordosica density increased in the semi-arid region, whereas the density decreased with increasing soil CaCO 3 /AP ratios in the arid region. In the semi-arid region, when the soil CaCO 3 /AP ratio was within the same amplitude and the increase in the soil CaCO 3 content was greater than the increase in soil AP, the A. ordosica density increased with increasing soil CaCO 3 /AP ratios. This means that the relationship between the soil CaCO 3 /AP ratio and the A. ordosica density remained the same. In the arid region, an increase in the soil CaCO 3 /AP ratio as a result of increased soil CaCO 3 content and decreased soil AP resulted in increased density of A. ordosica. Therefore, the relationship between soil CaCO 3 /AP ratios and density of A. ordosica was altered by these changes in soil chemistry. Thus, the soil stoichiometry of the CaCO 3 /AP ratio is an important factor affecting the density of A. ordosica in arid and semi-arid regions.Artemisia ordosica, soil CaCO 3 , soil available phosphorus, soil CaCO 3 /available phosphorus ratio (soil CaCO 3 /AP ratio), stoichiometry, plant density Citation:Zhao X L, He X D, Xue P P, et al. Effects of soil stoichiometry of the CaCO 3 /available phosphorus ratio on plant density in Artemisia ordosica communities.

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Section: Discussionmentioning

confidence: 99%

Section: 1mentioning

confidence: 97%

Effects of soil stoichiometry of the CaCO3/available phosphorus ratio on plant density in Artemisia ordosica communities

Zhao

Xue

et al. 2011

Chin. Sci. Bull.

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“…Root-induced acidification of the rhizosphere can significantly increase the bioavailability of P especially in neutral to alkaline soils (Hinsinger, 2001). In fact, in calcareous soils significant accumulations of total P and Olsen P (NaHCO 3 extractable P) have been observed in rhizosphere soils from five different xeno-shrubs compared to their bulk soils, where soil pH in the rhizosphere decreased by 0.4 to 0.8 units (Ma et al, 2009). …”

Section: Effects Of Plant Growth On Plant Available P In Soilsmentioning

confidence: 99%

Kinetics of phosphorus forms applied as inorganic and organic amendments to a calcareous soil II: effects of plant growth on plant available and uptake phosphorus

et al. 2016

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“…Olsen-P is a good index to represent the status of nutrients in soils, which mainly includes the Fe, Al binding P (Ma et al 2009). Thus, Olsen-P can be also regarded as a quantitative index of available P for algae to a certain extent (Zhou et al 2001).…”

Section: P Fractions and Bioavailable Pmentioning

confidence: 99%

Evaluation of phosphorus bioavailability in sediments of the shallow lakes in the middle and lower reaches of the Yangtze River region, China

Wang

Jin

et al. 2009

Environ Earth Sci

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Phosphorus (P) fractions and their bioavailability in the sediments from the middle and lower reaches of the Yangtze River region were investigated using different chemical extraction methods. The results show that the contents of bioavailable P in the sediments extracted by different extraction procedures varied greatly. But their rank order was similar. Potentially releasable P (PRP) was the largest, followed by algal available P (AAP), NaHCO 3 extractable P (Olsen-P), water soluble P (WSP), and readily desorbable P. PRP contributed approximately 60% to total P (TP) in most sediments, AAP 20%, Olsen-P 15%, WSP 2%, and readily desorbable P (RDP) 0.5%. For the heavily polluted sediments, their bioavailable P extracted from TP mainly originated from inorganic P (IP), IP mainly originated from NaOH-P, the bioavailable P concentrations can be evaluated by measuring the concentrations of TP, NaOH-P, and IP. For the slightly polluted sediments, the bioavailable P can only be evaluated by different chemical extractable methods.

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Inorganic phosphorus fractions in the rhizosphere of xerophytic shrubs in the Alxa Desert

Cited by 30 publications

References 42 publications

Effects of soil stoichiometry of the CaCO3/available phosphorus ratio on plant density in Artemisia ordosica communities

Effects of soil stoichiometry of the CaCO3/available phosphorus ratio on plant density in Artemisia ordosica communities

Kinetics of phosphorus forms applied as inorganic and organic amendments to a calcareous soil II: effects of plant growth on plant available and uptake phosphorus

Evaluation of phosphorus bioavailability in sediments of the shallow lakes in the middle and lower reaches of the Yangtze River region, China

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