The distribution, diversity, and conservation status of Cycas in China.

摘要: As ancient gymnosperm and woody plants, cycads have survived through dramatic tectonic activities, climate fluctuation, environmental variations making them of great significance in studying the origin evolution flora biodiversity. However, they are among most threatened plant groups world. The principal aim this review is to outline distribution, diversity, conservation status Cycas China provide suggestions for practices. In review, we describe taxonomy, China. By comparing Chinese species with its relatives worldwide, then discuss current genetic differentiation Cycas, try disentangle potential effects Quaternary changes topographical events on Cycas. We practices from both researchers practitioners these rare endangered species. High diversity at level strong within been observed. Most southwest experienced population retreats contrast coastal Cycas's expansion during glaciation. Additionally, human activities habitat fragmentation pushed taxa brink extinction. Although numerous efforts made mitigate threats survival, implementation compliance monitoring protection zones currently inadequate. six proposals strengthen measures anticipate that will guidelines further research genetics as well biology not only but also other worldwide.