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UCAR、芝加哥植物园(Chicago Botanic Garden)等单位与美国国家物候网(USA National Phenology Network)、美国国家生态观测网(National Ecological Observatory Network)共同组织发起了一个全美物候观测计划(BudBurst计划),资金来源于美国鱼类和野生动物局(U.S.Fishand Wildlife Service)、 相似文献
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《干旱区地理》2007,30(6):831
2007年9月,在中国科学院生命科学与生物技术局主持下,在吐鲁番沙漠植物园,对吐鲁番沙漠植物园和沈阳树木园承担的二期创新“科技基础设施建设”专项子项目
“沙拐枣专类园的建立”和“沈阳树木园辉山分园建设”进行了验收,同时,对三期创新“战略生物资源保存与可持续利用”专项子项目“荒漠植物收集与生态景观优化”和“沈阳树木园城市森林适宜树种收集与展示区景观优化”实施方案进行了论证。中国科学院生命科学与生物技术局局长康乐研究员、中国科学院植物研究所洪德元院士、中国科学院上海生命科学院副院长陈晓亚院士,以及中国科学院西双版纳植物园、华南植物园、北京植物园、昆明植物园和仙湖植物园、中国科学院植物研究所的专家组成专家组进行验收和鉴定。中国科学院新疆生态与地理研究所和中国科学院沈阳生态研究所的领导和业务部门负责人、吐鲁番市及相关局领导,以及两园参与项目的研究人罚出席了会议。 相似文献
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石花水洞位于海南省儋州市八一农场的英岛山下,距儋州市30公里,北临热带植物园景区,南临著名热带雨林尖峰岭景区,为海南难得的特色地质景观。洞内发育生长的"一石二花"——卷曲石、文石花、方解石晶体花均为国宝级珍品。1998年,八一农场进行石灰石采掘时,在英岛山意外发现了一个石花溶洞。次年,中国地质学会洞穴研究专 相似文献
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Anthropogenic disturbances influence plant regeneration and species diversity, which impact the conservation status of protected areas. A study was conducted in the Sitakund Botanical Garden and Eco-park (SBGE), Chittagong, Bangladesh to analyze the natural regeneration and tree species diversity in disturbed and less disturbed zones. Stratified and systematic random sampling was used to select 50 sample plots from each of the two zones. A total number of 109 plant species from 43 families were recorded in the study; of which 93 species were of natural origin while the rest were planted. From the species with natural origin 66 were tree species, 9 were shrub species and 28 were climbers. Species richness, density of regeneration and disturbance index in the height classes (0- 0.5 m) and {dbh 〉 6 cm) indicated significant differences between the zones. The study analyzed how disturbances affect species diversity in the area. It was found that species richness and basal area are negatively related with disturbances. Moreover, density (N/ha) of trees was more likely to decrease with increasing tree height that reflects the huge demand of local people to harvest large trees as part of their income generating activities. The study findings have implications for future managementdecisions of the SGBE. To restore these ecosystems, management should focus on both biodiversity eonservation and providing benefits to local people without hampering forest ecosystems. 相似文献