增温和氮磷添加对亚热带森林凋落物溶解有机碳生物可降解性的影响
Effects of warming and nitrogen and phosphorus addition on dissolved organic carbon biodegradability of litter in a subtropical forest
增温和氮磷添加对亚热带森林凋落物溶解有机碳生物可降解性的影响 |
| 冉佳鑫, 张宇辉, 王云, 杨智杰, 毛超 |
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Effects of warming and nitrogen and phosphorus addition on dissolved organic carbon biodegradability of litter in a subtropical forest |
| RAN Jia-Xin, ZHANG Yu-Hui, WANG Yun, YANG Zhi-Jie, MAO Chao |
| 图3 增温和氮磷添加对亚热带森林凋落物分解0天和180天可溶性有机碳光谱指标变化量(ΔDOC)的影响(平均值±标准误)。ΔSUVA254、ΔSUVA260、ΔSUVA280和Δa300分别表征凋落物浸提液的芳香化程度、疏水性组分、高分子量化合物和发色团物质在培养28天后的变化量。CK, 对照; N, 氮添加; NP, 氮和磷添加的交互作用; P, 磷添加; W, 增温; WN, 增温和氮添加的交互作用; WNP, 增温、氮和磷添加的交互作用; WP, 增温和磷添加的交互作用。 |
| Fig. 3 Effects of warming and nitrogen and phosphorus addition on the variations in dissolved organic carbon (ΔDOC) spectral index of litter with 0-day decomposition and 180-day decomposition in a subtropical forest (mean ± SE). ΔSUVA254, ΔSUVA260, ΔSUVA280 and Δa300 represented the aromaticity, hydrophobicity, high molecular weight and chromophoric dissolved oganic matter composition of leaf litter, respectively after 28-day incubation. CK, control treatment; N, nitrogen addition; NP, interaction between nitrogen and phosphorus addition; P, phosphorus addition; W, warming; WN, interaction between warming and nitrogen addition; WNP, interactions among warming, nitrogen and phosphorus addition; WP, interaction between warming and phosphorus addition. |
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