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[目的]从桂西北岩溶地区常见石山植物中筛选出生态-经济综合效益较好的优良先锋种。[方法]用硫代巴比妥酸法、磺基水杨酸法分别对65种常见石山植物叶片中的丙二醛和脯氨酸含量进行了测定,用数理统计方法对丙二醛和脯氨酸含量的相关性进行分析,并对65种石山植物进行聚类分析。[结果]石山植物叶片中的丙二醛含量为0.0052～0.0381μmol/g,不同植物之间丙二醛含量差异较大;所测定的植物叶片中的脯氨酸含量为4.347～374.956μg/ml,不同树种之间脯氨酸含量差异也较大;丙二醛和脯氨酸含量可以作为岩溶地区先锋植物选择的参考指标,但在选择先锋植物时不仅应考虑物种自身的生物学特性,还应考虑岩溶环境的差异性和生态经济效益以及物种的合理配置。[结论]黄连木、任豆、台湾相思、伊桐、国槐等可以作为桂西北岩溶地区石山绿化首选的优良先锋树种,与广西石山造林和植被恢复的实际情况比较一致。
[Objective] The research aimed to screen the best pioneers with better ecological-economic benefits from the common mountain plants in the karst area of northwestern Guangxi. [Method] Thiobarbituric acid method and sulfosalicylic acid method were respectively used to determine the content of MDA and proline in 65 kinds of common mountain plants. The content of malondialdehyde (MDA) and proline Amino acid content of the correlation analysis, and 65 kinds of rock mountain plants clustering analysis. [Result] The content of malondialdehyde in the leaves of Shishan Mountain was 0.0052 ~ 0.0381μmol / g, and the content of malondialdehyde in different plants was quite different. The content of proline in the leaves of the plant was 4.347 ~ 374.956μg / ml , The content of proline in different species was also different. The content of malondialdehyde and proline could be used as a reference index for selection of pioneer plants in karst areas, but not only the biological characteristics of the species should be considered when selecting pioneer plants Karst environment should take into account the differences and ecological and economic benefits as well as the rational allocation of species. [Conclusion] Plexus, Ren Ren, Taiwan Acacia, Ipomoea cairica and Sophora japonica could be regarded as the best vanguard species for rocky mountain greening in the northwestern Guilin, Guangxi. They are consistent with the actual situation of afforestation and vegetation restoration in the mountainous area of Guangxi.