Subjects: Biology >> Botany >> Applied botany submitted time 2020-08-02 Cooperative journals: 《广西植物》
Abstract：鄂西南地区密集分布有后河、木林子、七姊妹山和星斗山四大国家级自然保护区, 共同形成了一个珍稀动植物大体相近，互相补充的保护区群。同时，该区域丰富的地貌类型和水气资源为苔藓植物营造了良好的居住环境。本文采用野外调查和文献资料整理相结合的方法，对鄂西南国家级自然保护区群内的苔藓植物丰富度和组成特征进行分析，并与渝东南、湘西北的苔藓植物多样性进行比较。结果表明：鄂西南国家级自然保护区群共有苔藓植物77 科 197 属 601 种，物种数分别占中国和湖北苔藓总数的 19.89%和 71.46%。其中，中国特有种 27 种，仅含一种的科有 15 科，仅含一种的属有 91 属。另外，鄂西南国家级保护区群内的各保护区之间的苔藓物种存在一定的相似性与互补性，符合我国生物多样性保护原则。同时，鄂西南国家级自然保护区群苔藓植物区系类型全面，物种数量也显著高于同处武陵山区的渝东南、湘西北等地区。因此，鄂西南国家级自然保护区群不但有效地保护了大型珍稀濒危动植物，也孕育了丰富多彩的苔藓植物类群，是苔藓植物多样性保护的重要场所。
Subjects: Mathematics >> Modeling and Simulation Subjects: Biology >> Biomathematics submitted time 2020-02-25
Abstract： Here we report the analysis of epidemic data from Jan. 20th to Feb. 16th, 2020 in 24 provinces in China, whose total infected cases are larger than 100 till 02/16/2020, as well as 16 cities in Hubei province (the most severely affected area) except Shennongjia, based on dynamical models and automatical algorithms for parameter optimization. We forecast the COVID-19 epidemics in most provinces in China will end up soon before February 29th, while those for Hubei province (except Wuhan city) will be closed by the middle of March. The epidemic in Wuhan will continue to the beginning of April. And we suggest further close attentions should be paid to six provides, including Heilongjiang, Hebei, Jiangxi, Anhui, Guizhou and Sichuan, as well as six different cities, including Wuhan, Jingzhou, Ezhou, Suizhou, Tianmen and Enshi, in Hubei province. Moreover, it is hinted that clustering infection might be happened in Tianjin, Hebei, Chongqing, Sichuan, Hainan and Guangxi provides, and many cities inside Hubei province during the spreading of COVID-19, which needs further validation by epidemiological investigations in the future.
Peer Review Status:
Awaiting Review
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