HUBEI AGRICULTURAL SCIENCES ›› 2022, Vol. 61 ›› Issue (20): 40-44.doi: 10.14088/j.cnki.issn0439-8114.2022.20.008

• Resource & Environment • Previous Articles     Next Articles

Distribution characteristics of different phosphorus forms in sediments of typical wetlands in the middle and lower reaches of the Yellow River

ZHANG Jia-yang, LIN Fang, ZHAO Wan-lu, CHEN En-xi, MAO Xin-yu   

  1. School of Life Sciencec and Basic Medicine, Xinxiang University, Xinxiang 453003, Henan, China
  • Received:2022-08-08 Online:2022-10-25 Published:2022-11-23

Abstract: In order to investigate the distribution characteristics of different phosphorus forms in typical wetland sediments of the middle and lower reaches of the Yellow River, 11 typical plots (4 kinds of core zones and 7 kinds of buffer zones) in Chenqiao Wetland of Xinxiang City, Henan Province were selected as the research objects, and the distribution characteristics of different phosphorus forms in different soil layers were analyzed. The results showed that the contents of inorganic phosphorus in 11 plots were in the order of Fe-Al bonded phosphorus, calcium-bonded phosphorus, reducible phosphorus and weakly adsorbed phosphorus from high to low. The average contents of weakly adsorbed phosphorus, reducible phosphorus, Fe-Al bounded phosphorus and calcium-bounded phosphorus were 3.5 mg/kg, 11.6 mg/kg, 276.9 mg/kg and 165.2 mg/kg in core zones, and were 3.4 mg/kg, 8.6 mg/kg, 255.7 mg/kg and 203.9 mg/kg in buffer zones, respectively. The weakly adsorbed phosphorus was mainly concentrated in the shallow layer of sediment, reducible phosphorus and Fe-Al bonded phosphorus were mainly concentrated in the deep layer of sediment, while calcium-bonded phosphorus was evenly distributed in the shallow and deep layers of sediments.

Key words: wetland, weakly adsorbed phosphorus, reducible phosphorus, Fe-Al bonded phosphorus, calcium-bonded phosphorus, the middle and lower reaches of the Yellow River

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