Publication Date
1993
Description
In natural grassland in north-east China, the allocation, dynamics, cycling and the flow rates of P were studied, and the relations between various P pools and !ability of P were analysed, The results were that (l) OPe-P and OCa-P are dominant forms in soil; the effect of inorganic P on labile phosphorus (LP) is negligible. LP primarily comes from organic P, especially from labile organic P and microorganism P. (2) The net budget of P is 2,837 kg/ha/year in the community with an output 1.5538 kg/ha/year from lhe ecosystem. (3) The mineralisation rate of organic P is about 0.0026 gig/year in soil. (4) The absorption of P by the roots is about 7.3382 kg/ha/year, 25.4% to aboveground and 86. 1 % to belowground, (5) The dead material P return is about 2.9533 kg/ha/year. (6) The P turnover times in live plant, stand dead, organic P, dead root and live root pools are 1.1614, 6.6225, 384.6145, 2.1142 and 1.4738 years, respectively.
Citation
Linqian, Fu and Tingcheng, Zhu, "Budgets and Cycling of Phosphorus of Leymunes chinenses in Vegetation-Soil Subecosystem in Arid Temperate Grassland" (2024). IGC Proceedings (1993-2023). 5.
https://uknowledge.uky.edu/igc/1993/session44/5
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Budgets and Cycling of Phosphorus of Leymunes chinenses in Vegetation-Soil Subecosystem in Arid Temperate Grassland
In natural grassland in north-east China, the allocation, dynamics, cycling and the flow rates of P were studied, and the relations between various P pools and !ability of P were analysed, The results were that (l) OPe-P and OCa-P are dominant forms in soil; the effect of inorganic P on labile phosphorus (LP) is negligible. LP primarily comes from organic P, especially from labile organic P and microorganism P. (2) The net budget of P is 2,837 kg/ha/year in the community with an output 1.5538 kg/ha/year from lhe ecosystem. (3) The mineralisation rate of organic P is about 0.0026 gig/year in soil. (4) The absorption of P by the roots is about 7.3382 kg/ha/year, 25.4% to aboveground and 86. 1 % to belowground, (5) The dead material P return is about 2.9533 kg/ha/year. (6) The P turnover times in live plant, stand dead, organic P, dead root and live root pools are 1.1614, 6.6225, 384.6145, 2.1142 and 1.4738 years, respectively.
