Zhao Zheng-Xue, Yang Lin, Long Jian-Kun, Chang Zhi-Min, Zhou Zheng-Xiang, Zhi Yan, Yang Liang-Jing, Li Hong-Xing, Sui Yong-Jin, Gong Nian, Wang Xiao-Ya, Chen Xiang-Sheng
Institute of Entomology, Guizhou University, Guiyang 550025, China.
Provincial Special Key Laboratory for Development and Utilization of Insect Resources of Guizhou, Guizhou University, Guiyang 550025, China.
Insects. 2020 Dec 17;11(12):892. doi: 10.3390/insects11120892.
Although many hypotheses have been proposed to understand the mechanisms underlying large-scale richness patterns, the environmental determinants are still poorly understood, particularly in insects. Here, we tested the relative contributions of seven hypotheses previously proposed to explain planthopper richness patterns in China. The richness patterns were visualized at a 1° × 1° grid size, using 14,722 distribution records for 1335 planthoppers. We used ordinary least squares and spatial error simultaneous autoregressive models to examine the relationships between richness and single environmental variables and employed model averaging to assess the environmental variable relative roles. Species richness was unevenly distributed, with high species numbers occurring in the central and southern mountainous areas. The mean annual temperature change since the Last Glacial Maximum was the most important factor for richness patterns, followed by mean annual temperature and net primary productivity. Therefore, historical climate stability, ambient energy, and productivity hypotheses were supported strongly, but orogenic processes and geological isolation may also play a vital role.
尽管已经提出了许多假说以理解大规模物种丰富度格局背后的机制，但环境决定因素仍未得到充分理解，尤其是在昆虫方面。在此，我们检验了先前提出的七个假说对解释中国飞虱物种丰富度格局的相对贡献。物种丰富度格局以1°×1°的网格大小呈现，使用了1335种飞虱的14722条分布记录。我们使用普通最小二乘法和空间误差同步自回归模型来检验物种丰富度与单一环境变量之间的关系，并采用模型平均法来评估环境变量的相对作用。物种丰富度分布不均，物种数量较多的地区集中在中部和南部山区。末次盛冰期以来的年均温度变化是物种丰富度格局的最重要因素，其次是年均温度和净初级生产力。因此，历史气候稳定性、环境能量和生产力假说得到了有力支持，但造山过程和地质隔离可能也起着至关重要的作用。
