Results 21 to 30 of about 18,058 (220)
Research on Management Problem and Countermeasures of China Marine Protected Areas——In Binzhou Chenier Island and Wetland National Nature Reserve as an Example [PDF]
海洋蕴藏的巨量资源是人类未来发展的物质基础,合理开发与保护海洋资源是人类实现永续发展的必然选择。面对海洋资源日益枯竭,海洋环境压力日益增大的现状,海洋保护区的建设和管理已经成为全球性的热点问题。然而,由于我国海洋保护区建设起步时间晚,海洋资源环境压力巨大等原因,导致海洋保护区管理过程中出现诸多问题,海洋保护区的建设和管理并未达到预期的保护效果。本文通过研究国内外海洋保护区的发展历程、概念、分类和作用,以滨州贝壳堤岛与湿地国家级自然保护区(以下简称:滨州贝壳堤岛与湿地保护区 ...
吴晨本
core
We found that the Asian Openbill primarily roosted near waterbodies and frequently used farmland habitats, with significantly higher populations observed during the breeding season. Farmland and wetland areas exhibited a positive effect on the species' habitat use.
Ganesh Tamang +3 more
wiley +1 more source
Gradient distributions of nitrogen and organic carbon in the soils from inland to tidal flat in the Yellow River Delta [PDF]
黄河三角洲是我国典型的通过黄河冲积泥沙填海造陆形成的近代沉积区。区域受到黄河冲积、沉积等自然过程和农业耕种熟化等人类活动的双重影响。本研究通过在黄河三角洲地区内陆到河口海湾不同距离采集典型土壤类型剖面发生层样品,探讨土壤有机碳、总氮等生源要素的空间分布规律,为阐明我国典型海岸带地区陆源碳、氮的输送及循环特征提供基础依据。研究结果表明,黄河三角洲内陆与河口地区呈现出完全不同的土壤碳、氮分布规律。表层土壤碳、氮含量在黄河沿岸及三角洲南部均表现出由陆向海逐级递减的空间分布特征 ...
李远 +4 more
core +1 more source
Seasonality of temperature dependence of methane fluxes from natural wetlands
Read the free Plain Language Summary for this article on the Journal blog. Abstract Temperature dependence is a crucial parameter in estimating methane (CH4) fluxes from natural wetlands, yet our understanding of this parameter remains inadequate. Seasonal fluctuations in water levels and ecosystem productivity lead to seasonal differences in CH4 ...
Jinshuai Li +6 more
wiley +1 more source
黑龙江省富锦国家湿地公园地处黑龙江省东北部富锦市,总面积2 200 hm2。笔者于2012年6月115日对湿地公园夏季鸟类资源多样性进行了调查分析。调查划分7个生境42个监测点,共统计到夏季鸟类15目31科61种5 611只,占湿地公园鸟类种数的34.46%;记录到夏候鸟53种,留鸟8种,包括水鸟36种5 355只。通过对各生境物种多样性指数、均匀性指数和物种丰富度分析认为:多样性指数顺序为林地(3.188148)>芦苇湿地(3.003125)>水域(2.589831)>农田(2.659385)>苔草 ...
郭立新 +5 more
doaj
Paleoenvironmental Analyses of the Buried Peat Deposit during the mid-Holocene at the Desaki Coast in Tamano City, Okayama Prefecture, Weatern Japan [PDF]
The buried peat deposit was foud in the sand beach on the Desaki coast (Tamano City, Okayama Prefecture), the northeastern coast of Seto Inland Sea. In this study, we performed sulfur and diatom analyses of the deposit.
Katoh, Shigehiro +7 more
core +1 more source
We assessed the distribution of 14 threatened agamid lizard species using Species Distribution Modeling to identify hotspots for these species' conservation. Based on the results, high‐priority areas of threatened agamids were projected to occur specially in the wet zone.
Iresha Wijerathne +10 more
wiley +1 more source
Diversity of culturable endophytic fungi of common reed ( Phragmites australis) in coastal wetland [PDF]
内生真菌在植物生长以及抵御环境胁迫过程中起着非常重要的生态作用.本研究从黄河三角洲滨海湿地1350个芦苇组织切片中分离得到318株内生真菌,通过对rDNA ITS的分型、测序及系统进化分析,研究了该地区芦苇植株根、茎、叶中可培养内生真菌的种类组成及在不同盐度、不同组织中的分布情况.根据序列相似性(以98%为阈值),共获得12个真菌分类操作单元(OTUs).在门级分类水平上,子囊菌门为绝对优势菌群,在各组织和站位中均有分布.芦苇根组织中分离得到的内生真菌OTU数相对较多 ...
张倩倩 +6 more
core +1 more source
Our study addresses the significant knowledge gap regarding the wintering population and habitat utilization of the Yellow‐breasted Bunting (Emberiza aureola) in Nepal, providing crucial insights that can aid in the conservation of this critically endangered species in wintering grounds.
Hem Bahadur Katuwal +6 more
wiley +1 more source
本文在分析中国湿地保护与合理利用现状和发展的基础上,对中国湿地监测的目的、监测范围、监测本底、技术思路及监测网络等问题进行了初步探讨。认为中国湿地监测的范围应是《湿地公约》定义的湿地;本底是正在进行的全国湿地资源调查;对湿地监测采用的手段为3S技术;监测内容将包括7个方面,并至少有5个监测技术指标;核算管理系统包括省级和国家级;成果汇总,重点湿地监测每年一次,综合监测每五年一次。
林进 +4 more
doaj

