RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2016, Vol. 25 >> Issue (12): 1903-1909.doi: 10.11870/cjlyzyyhj201612014

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STUDY OF THE INFLUENCE OF SOIL AGGREGATE COMPOSITION, ANTI-SUSPENSION AND PHOSPHORUS RELEASE UNDER THE MODIFIERS ADDING IN WETLAND

CHEN Xing1, ZHANG Ping-jiu1, BAO Xian-ming2, ZHANG Lu-lu1, ZHANG Hai-xia1, HAN Yan-qing1   

  1. 1. Anhui Key Laboratory of Natural Disasters Process and Prevention/College of Territorial Resource and Tourism, Anhui Normal University, Wuhu 241003, China;
    2. College of Life Sciences, Huaibei Normal University, Huaibei 235000, China
  • Received:2016-02-03 Revised:2016-08-25 Online:2016-12-20
  • Supported by:
    National Natural Science Foundation of China(41301249);Natural Science Foundation of Anhui(No.1308085MB22);National Water Pollution Control and Treatment Science and Technology Major Project Technology(2012ZX07103-005)

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Abstract: Soils were collected from estuary wetland of Shiwuli River in the Chaohu Lake region. Influences of PAM(J), PAM+biochar(SJ) and PAM+peat(NJ) amendments on soil aggregates, anti-suspension and phosphorus release were studied after flood incubation. The results showed that >0.25mm soil water-stable aggregate contents were in the order:J(58.73±0.57%) > SJ(48.27±3.58%) > NJ(34.47±2.02%) > CK (no modifier treatment)(2.31±0.15%).On the laboratory simulated experiment of wind effect, soil suspension contents and total phosphorus in water were in the order:CK > NJ > J > SJ, CK was significantly higher than the else. Compared to CK, J, SJ and NJ increased the contents of >0.25mm water-stable aggregates,and enhanced the capability of soil anti-suspension, moreover, obviously reduced soil phosphorus release into waters. The SJ, was the best treatment to promote the capability of soil anti-suspension and reduce the phosphorus release into water.

Key words: structural modifier, water-stable aggregate, anti-suspension capability, total phosphorus, Chaohu lake

CLC Number: 

  • S151.9
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