季节性雪被对天山雪岭云杉凋落叶分解和碳氮磷释放的影响

陈文静,贡璐,刘雨桐

Effects of seasonal snow cover on decomposition and carbon, nitrogen and phosphorus release of Picea schrenkiana leaf litter in Mt. Tianshan, Northwest China

Wen-Jing CHEN,Lu GONG,Yu-Tong LIU

表1 雪岭云杉凋落叶非线性回归拟合Olson指数模型

Table 1 Non-linear regression fitting Olson exponent model for leaf litter of Picea schrenkiana

雪被 Snow cover 回归方程 Regression model 分解系数 k Decomposition constant k 相关系数 r Correlation coefficient r 半分解时间 Time of half decomposition (a) 95%分解时间 Time of 95% decomposition (a) 厚雪被 Thick snow cover y = 98.009e-0.310x 0.310 0.97 2.336 9.664 中雪被 Medium snow cover y = 98.592e-0.296x 0.296 0.98 2.342 10.121 薄雪被 Thin snow cover y = 98.556e-0.277x 0.277 0.98 2.502 10.815 无雪被 No snow cover y = 99.251e-0.273x 0.273 0.98 2.539 10.973