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

罗娜娜, 盛茂银, 王霖娇, 石庆龙, 何宇

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-Na, SHENG Mao-Yin, WANG Lin-Jiao, SHI Qing-Long, HE Yu

表3 西南喀斯特石漠化土壤环境因子对长期植被恢复响应的主成分分析

Table 3 Principal component analysis for the response of karst rocky desertification soil environmental factors to long-term vegetation restorations in southwest China

因子 Factor 主成分 Principal component 1 2 3 4 URE 0.000 0.725 -0.332 -0.061 SUC -0.024 -0.016 0.856 -0.248 AMY 0.589 0.514 -0.191 0.168 ALP 0.706 0.557 0.262 -0.053 TSOC 0.985 0.019 0.047 -0.045 DOC -0.228 -0.382 0.506 0.502 MBC 0.613 0.579 0.296 0.228 EOC 0.970 0.056 -0.026 0.131 TN 0.870 -0.188 0.098 -0.278 TP 0.651 -0.541 -0.064 0.072 pH -0.215 0.754 -0.021 -0.148 BD -0.737 0.433 -0.022 -0.236 DOC/TSOC -0.907 -0.044 0.036 0.198 MBC/TSOC -0.386 0.675 0.370 0.308 EOC/TSOC 0.134 0.046 -0.213 0.823 特征向量值 Eigenvalue 5.947 3.129 1.492 1.391 贡献率率 Contribution percent (%) 39.647 20.859 9.948 9.276 累计贡献率 Cumulative percent (%) 39.647 60.506 70.455 79.731