species turnover rate meaning in Chinese

种的周转率

The results shows that the community richness , species diversity indices and evenness of tree layer and shrub layer share the same order , of which is higher in pure limestone region than that of in pure dolomite region , but it reverse in herb layer ; the coefficient of similarity is considerably low between all plots , while species turnover rate is quite high among the plots and is higher in dolomite region than that of in limestone ; in different karst regions , karst processing leads to niches diversity characterized by special morphologies and special element geochamical features , and therefore affect the dynamic and features of plant communities
我们在最有代表性之一的贵州茂兰喀斯特森林保护区选取纯灰岩和纯白云岩两种岩性的喀斯特环境，对其元素地球化学特征及其中原生性植物群落的相异性和物种多样性进行了对比，结果发现：不同岩性区域多样性：乔木层和灌木层为纯灰岩区纯白云岩区，草本层为纯白云岩区纯灰岩区，总体上纯灰岩区的高于纯白云岩区的；各样地间的相似性系数都很低，相同岩性类型内的明显高于不同岩性类型之间的相似度；物种周转率高，且白云岩区高于石灰岩区，种类组成差异明显；喀斯特区可溶岩地球化学背景通过喀斯特作用导致特殊的地形条件与元素地球化学特征，并引起局部小生境的分异从而影响植物群落特征。