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The degradation rate of cellulose and lignin of bald cypress (A1,A2), Chinese willow (B1,B2), and the mixtures (C1,C2) during each sampling time across one-year. Different lowercase letters indicate statistically significant (P < 0.05) differences of cellulose and lignin degradation rate among different submergence depths at each sampling time for each foliage type. CK, SS, and DS represent no submergence, shallow submergence, and deep submergence, respectively.
