长期植被恢复对中国西南喀斯特石漠化土壤活性有机碳组分含量和酶活性的影响

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罗娜娜¹^,², 盛茂银¹^,³^,^*(

), 王霖娇¹^,², 石庆龙¹^,³, 何宇¹^,³

Effects of long-term vegetation restoration on soil active organic carbon fractions content and enzyme activities in karst rocky desertification ecosystem of southwest China

LUO Na-Na¹^,², SHENG Mao-Yin¹^,³^,^*(

), WANG Lin-Jiao¹^,², SHI Qing-Long¹^,³, HE Yu¹^,³

图3. 西南喀斯特石漠化不同植被恢复措施的土壤活性有机碳组分含量(A-C)及其在土壤总有机碳含量中的占比(D-F) (平均值±标准差)。DOC, 可溶性有机碳含量; EOC, 易氧化有机碳含量; MBC, 微生物生物量碳含量; TSOC, 土壤总有机碳含量。BM, 柏木种植; CK, 对照样地; HJ, 花椒种植; HLG, 火龙果种植; HZC, 皇竹草种植; JYH, 金银花种植; SR, 砂仁种植; YM, 柚木种植。不同大写字母表示同一土层中不同植被恢复措施的差异显著(p < 0.05), 不同小写字母表示同一植被恢复措施不同土层的差异显著(p < 0.05)。

Fig. 3. Soil active organic carbon fraction contents (A-C) and their proportions (D-F) to total soil organic carbon content (TSOC) of the different vegetation restorations in the karst rocky desertification ecosystem, southwest China (mean ± SD). DOC, dissolved organic carbon content; EOC, easy oxidation carbon content; MBC, microbial biomass carbon content; TSOC, total soil organic carbon content. BM, Cupressus funebris planting; CK, control plot; HJ, Zanthoxylum bungeanum planting; HLG, Hylocereus undatus planting; HZC, Pennisetum sinese planting; JYH, Lonicera japonica planting; SR, Amomum villosum planting; YM, Tectona grandis planting. Different uppercase letters indicate significant differences (p < 0.05) between different vegetation restoration measures in the same soil layer, and different lowercase letters indicate significant differences (p < 0.05) between different soil layers of the same vegetation restoration measure.