不同植物来源可溶性有机质对亚热带森林土壤酶活性的影响

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梅孔灿¹^,², 程蕾¹^,², 张秋芳¹^,², 林开淼²^,³, 周嘉聪¹^,², 曾泉鑫¹^,², 吴玥¹^,², 徐建国³, 周锦容¹^,², 陈岳民¹^,²^,^*(

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Effects of dissolved organic matter from different plant sources on soil enzyme activities in subtropical forests

MEI Kong-Can¹^,², CHENG Lei¹^,², ZHANG Qiu-Fang¹^,², LIN Kai-Miao²^,³, ZHOU Jia-Cong¹^,², ZENG Quan-Xin¹^,², WU Yue¹^,², XU Jian-Guo³, ZHOU Jin-Rong¹^,², CHEN Yue-Min¹^,²^,^*(

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图3. 可溶性有机质(DOM)输入对土壤酶活性影响的冗余分析。
CL, 输入杉木叶片DOM处理; CT, 对照处理; PL, 输入楠木叶片DOM处理; SL, 输入木荷叶片DOM处理。βG, β-葡萄糖苷酶; CBH, 纤维素水解酶; PEO, 过氧化物酶; PPO, 多酚氧化酶。DOC, 土壤溶解有机碳含量; DON, 土壤溶解有机氮含量; MBN, 微生物生物量氮含量; SOC, 土壤总有机碳含量。图中实线箭头表示物种因子, 虚线箭头表示环境因子。图右下角变量注释表示对土壤酶活性变化有显著影响的环境因子的相应解释比例。

Fig. 3. Redundant analysis of the effect of dissolved organic matter (DOM) input on soil enzyme activities.
CL, Cunninghamia lanceolata leaf DOM addition treatment; CT, control treatment; PL, Phoebe zherman leaf DOM addition treatment; SL, Schima superba leaf DOM addition treatment. βG, β-glucosidase; CBH, cellulolytic enzymes; PEO, peroxidase; PPO, polyphenol oxidase. DOC, soil dissolved organic carbon content; DON, soil dissolved organic nitrogen content; MBN, microbial biomass nitrogen content; SOC, total soil organic carbon content. The solid arrows represent species factors and the dotted arrows represent environmental factors. The notes of variables in lower right corner of the picture represent the corresponding proportion of environmental factors that have a significant effect on changes in soil enzyme activities.