Drought promotes soil phosphorus transformation and reduces phosphorus bioavailability in a temperate forest

2020 ◽  
Vol 732 ◽  
pp. 139295 ◽  
Author(s):  
Hongzhi Zhang ◽  
Leilei Shi ◽  
Haibo Lu ◽  
Yuanhu Shao ◽  
Shirong Liu ◽  
...  
2020 ◽  
Vol 270 ◽  
pp. 110980
Author(s):  
Muhammad Shoaib Rana ◽  
Cheng Xiao Hu ◽  
Muhammad Shaaban ◽  
Muhammad Imran ◽  
Javaria Afzal ◽  
...  

2018 ◽  
pp. 1-9
Author(s):  
Md. Zulfikar Khan ◽  
Md. Ariful Islam ◽  
Russel Hossin ◽  
Md. Sadiqul Amin

A laboratory incubation experiment was carried out to investigate the influence of soil salinity and organic matter on inorganic phosphorus transformation with times in two different soil series such as Barisal and Dumuria located in Ganges Tidal Floodplain sites of Bangladesh. Two representative soil samples were collected from surface soil (0-15 cm) with composite sampling. The salinity and organic matter treatments were 4 dS m-1 and 5 t ha-1 (decomposed cow dung) with three replications. The treated soils were then incubated in the laboratory at field capacity moisture condition. To determine the transformation of different forms of inorganic P, sampling was done for 0, 7, 15 and 30 days. Different forms of inorganic P such as soluble and exchangeable phosphorus (SE-P), iron and aluminium bound phosphorus (Fe and Al-P), calcium bound phosphorus (Ca-P) and residual phosphorus (RE-P) were determined at different days of incubation. For Barisal soil series, the sequence of different forms of inorganic P was Ca-P>RE-P>Fe and Al-P>SE-P according to their amount. For Dumuria soil series, the sequence was Ca-P>RE-P>Fe and Al-P>SE-P, respectively. The sequence clearly indicates that the soluble and exchangeable P increases with time due to a combination of salinity and decomposed organic matter which increases the uptake of P and ultimately increases the yield. The changes were statistically significant (P < 0.001) in the case of all three soils.


2016 ◽  
Vol 25 (3) ◽  
pp. e070 ◽  
Author(s):  
Mustafa-Nawaz Shafqat ◽  
Salina Shahid ◽  
Syed-Ali-Musstjab-Akber-Shah Eqani ◽  
Syed-Haider Shah ◽  
Amir Waseem

Aims of the study: This study aims (i) to monitor the amount of dust deposition during dry season in the moist temperate forest; (ii) to study nature of P fractions in the dust samples falling on the trees in the region; (iii) to study soil P fractions as influenced by the processes of throughfall and stemflow of a Blue Pine (Pinus wallichiana) canopy and to finger print the contribution of dust towards P input in the temperate forest ecosystem.Area of study: The site used for the collection of soil samples was situated at an elevation of 6900 feet above sea levels (temperate forest in Himalaya region) in the Thandani area national forest located in the north west of Pakistan.Material and methods:  For soil sampling and processing, three forest sites with three old tree plants per site were selected at approximately leveled plain for surface soil sampling. Two dust samples were collected and analyzed for different physicochemical properties along with different P fractions. First dust sample was collected from a site situated at an elevation of 4000 feet and second one was collected from an elevation of 6500 feet above sea levels. Modified Hedley procedure for the fractionation of P in the dust and soil samples were used.Main results: The input of dust was 43 and 20 kg ha-1 during drier months of the year (September-June) at lower and higher elevation sites respectively, and the dust from lower elevation site had relative more all P fractions than the other dust sample. However, HCl-Pi fraction was dominant in both samples. Both labile (water plus NaHCO3) and non-labile (NaOH plus HCl) inorganic P (Pi) fractions were significantly increased in the surface soil by both stemflow and throughfall compared to the open field soil. The buildup of NaOH and HCl-Pi pools in soils underneath the canopy might prove useful in fingerprinting the contribution of atmospheric dust towards P cycling in this temperate forest.Research highlights: The role of dust in the cycling of P in temperate forest in Himalaya region.Keywords: soil phosphorus fractions; atmospheric dust; stemflow, throughfall; temperate forest.


2020 ◽  
Vol 11 ◽  
Author(s):  
Yueming Liang ◽  
Mingjin Li ◽  
Fujing Pan ◽  
Jiangming Ma ◽  
Zhangqi Yang ◽  
...  

phoD-harboring microorganisms facilitate mineralization of organic phosphorus (P), while their role in the regulation of soil P turnover under P-limited conditions in Pinus massoniana plantations is poorly understood. The aim of the present study was to investigate the effects of stand age and season on soil P fractions and phoD-harboring microorganism communities in a chronosequence of Chinese P. massoniana plantations including 3, 19, and 58 years. The soil P fractions (i.e., CaCl2-P, citrate-P, enzyme-P, and HCl-P) varied seasonally, with the higher values observed in the rainy season. The concentrations of the fractions were higher in old plantation (OP) soils and lower in young planation (YP) soils in both seasons. The OTU abundances were negatively correlated with total available P concentration, while were positively correlated with alkaline phosphomonoesterase (ALP) activity at 0–10 cm soil depth. The results indicate that phoD-harboring microorganisms have great potential to mineralize organic P under P-poor conditions and highlights those microorganisms are indicators of P bioavailability in P. massoniana plantations.


2020 ◽  
Vol 268 ◽  
pp. 110610 ◽  
Author(s):  
Muhammad Shoaib Rana ◽  
Cheng Xiao Hu ◽  
Muhammad Shaaban ◽  
Muhammad Imran ◽  
Javaria Afzal ◽  
...  

2019 ◽  
pp. 131-172 ◽  
Author(s):  
Fayong Li ◽  
Xinqiang Liang ◽  
Christophe Niyungeko ◽  
Tao Sun ◽  
Feng Liu ◽  
...  

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