排序方式： 共有3条查询结果，搜索用时 42 毫秒
1
1.
Understanding the connectivity of fish among different typical habitats is important for conducting ecosystembased management, particularly when designing marine protected areas(MPA) or setting MPA networks. To clarify of connectivity among mangrove, seagrass beds, and coral reef habitats in Wenchang, Hainan Province,China, the fish community structure was studied in wet and dry seasons of 2018. Gill nets were placed across the three habitat types, and the number of species, individuals, and body size of individual fish were recorded. In total, 3 815 individuals belonging to 154 species of 57 families were collected. The highest number of individuals and species was documented in mangroves(117 species, 2 623 individuals), followed by coral reefs(61 species,438 individuals) and seagrass beds(46 species, 754 individuals). The similarity tests revealed highly significant differences among the three habitats. Approximately 23.4% species used two habitats and 11.0% species used three habitats. A significant difference(p0.05) in habitat use among eight species(Mugil cephalus, Gerres oblongus, Siganus fuscescens, Terapon jarbua, Sillago maculata, Upeneus tragula, Lutjanus russellii, and Monacanthus chinensis) was detected, with a clear ontogenetic shift in habitat use from mangrove or seagrass beds to coral reefs. The similarity indices suggested that fish assemblages can be divided into three large groups namely coral, seagrass, and mangrove habitat types. This study demonstrated that connectivity exists between mangrove–seagrass–coral reef continuum in Wenchang area; therefore, we recommend that fish connectivity should be considered when designing MPAs or MPA network where possible. 相似文献
2.
介绍了基础性地理国情监测的特点和作用,着重阐述了基础性地理国情监测成果服务于广东省领导干部自然资源资产离任审计的思路与内容,并详细说明了耕地保护审查、违法用地审查、森林资源管理审查、海洋资源管理审查以及矿产资源管理审查等审查项目的技术方法.经验证,技术方法具有很强的可操作性,审计结果可行性高、可靠性强. 相似文献
3.
目的：观察耳穴压豆治疗肝郁脾虚型失眠症的临床疗效。方法：选取60例肝郁脾虚型失眠症患者，采用王不留行耳穴贴治疗，选取耳穴的神门、皮质下、心、肾、肝、脾6组穴位，以2周为1个疗程，共治疗2个疗程。观察疗效，并比较患者治疗前后的临床症状评分和匹兹堡睡眠质量（PSQI）评分。结果：临床治愈32例，显效22例，有效2例，无效4例，总有效率为93.33%；60例患者临床症状评分、PSQI指数治疗后均较治疗前有明显改善，差异均有统计学意义（P＜0.05）。结论：耳穴压豆疗法治疗肝郁脾虚型失眠症疗效满意，值得推广。 相似文献
1