不同海岸距离上木麻黄凋落叶金属元素含量及归还量动态特征

袁锋, 王艳艳, 李茂瑾, 江传阳, 刘贺娜, 李坤玲, 洪滔, 吴承祯, 陈灿

Dynamic characteristics of metal element content and return of Casuarina equisetifolia litter at different distances to the coastline

YUAN Feng, WANG Yan-Yan, LI Mao-Jin, JIANG Chuan-Yang, LIU He-Na, LI Kun-Ling, HONG Tao, WU Cheng-Zhen, CHEN Can

表3 不同海岸距离木麻黄凋落叶养分含量及归还量回归方程

Table 3 Equations for the calculation of litter element content and return of Casuarina equisetifolia at different distances to the coastline

元素 Element 含量 Content (g·kg-1) 归还量 Return amount (kg·hm-2) 方程 Equation R2 p 方程 Equation R2 p Na y = -0.7365x + 7.0288 0.913 3 0.000 y = -8.978x + 73.306 0.897 3 0.000 Mn y = 0.0112x2 - 0.0607x + 0.1395 0.689 4 0.000 y = 0.0889x2 - 0.4939x + 1.29 0.489 8 0.000 Fe y = 0.009x2 - 0.0788x + 0.3393 0.977 3 0.019 y = -0.24x + 2.644 0.813 4 0.002 Cu y = 0.002x2 - 0.0015x + 0.0056 0.780 3 0.022 y = 0.0012x2 - 0.0115x + 0.0505 0.776 0 0.054 Zn y = 0.0013x2 - 0.0086x + 0.0276 0.833 1 0.019 y = -0.014x + 0.1962 0.664 8 0.009