an increasing trendP < 0.09
Total nitrogen tended to exhibit an increasing trend over our study ( Table 2 : P < 0.09), especially for the warm season ( Table 2 : P < 0.0002).
Total nitrogen tended to exhibit an increasing trend over our study ( Table 2 : P < 0.09), especially for the warm season ( Table 2 : P < 0.0002).