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采用Shannen－wiener多样性指数和盖度加权叶层多样性指数等作为植物群落垂直结构复杂性的测度，分析了小流域治理对6个不同立地条件类型的植物群落的组成、结构及多样性变化的影响。分析结果表明，小流域治理不仅使植物个体数和种数大幅度增加，同时使植物群落的空间结构发生明显变化，在相同立地条件下治理区植物群落的垂直结构和层次性的复杂程度明显高于未治理区。
Shannon-wiener diversity index and cover-weighted leaf layer diversity index were used as measures for the vertical structure complexity of plant communities. The changes of composition, structure and diversity of plant communities in 6 different habitat types were analyzed Impact. The results showed that the management of small watershed not only increased the number of individuals and the number of species, but also significantly changed the spatial structure of plant communities. The vertical structure and hierarchical complexity of plant communities in the same site were significantly higher In uncontrolled area.