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[1]ZHANG Zhao-fu,HUANG Yan-he,LIN Jin-shi,et al.Effects of PAM Characteristics on Runoff and Erosion of Colluvial Deposits in Benggang[J].Research of Soil and Water Conservation,2014,21(03):1-5.

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Effects of PAM Characteristics on Runoff and Erosion of Colluvial Deposits in Benggang

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 21 Number of periods: 2014 03 Page number: 1-5 Column: Public date: 2014-06-28

Title:: Effects of PAM Characteristics on Runoff and Erosion of Colluvial Deposits in Benggang

Author(s):: ZHANG Zhao-fu, HUANG Yan-he, LIN Jin-shi, JIANG Fang-shi, ZHU Gao-li, LIN Zhi-hong, ZENG Chang-bi, HE Kai-wen; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China

Keywords:: PAM; molecular weight; hydrolysis; colluvial deposits; erosion; runoff

CLC:: S157.1

DOI:: -

Abstract:: Effects of PAMs with different molecular weights (MW) (8×10⁶, 1.2×10⁷, 1.5×10⁷ Da) and hydrolysis degrees (10%, 20%, 30%) on soil erosion and runoff were investigated through artificial simulation rainfall experiment. The results showed that all the three PAMs decreased soil erosion separately compared with the control, the molecular weight of 1.2×10⁷ Da was more effective than the other two, the hydrolysis degree did not show much difference in affecting soil erosion. PAMs different in molecular weights and degrees of hydrolysis, increased runoff, the higher the molecular weight was, the more the runoff increased, meanwhile, the degree of hydrolysis influenced the runoff and the erosion in an inverse relation. All the PAMs affected the content of eroded sediment particles, the percentage of sand-sized particles increased, whereas the fraction of silt-sized and clay-sized particles decreased. Considering the costs of PAMs and the effect of erosion resistance, the PAM with hydrolysis of 10% and molecular weight of 1.2×10⁷ Da was more suitable for application to colluvial deposits of Benggang.

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