共查询到19条相似文献,搜索用时 125 毫秒
1.
黄河三角洲是大鸨的一个重要越冬栖息地,调查结果显示,从1997年到2006年在黄河三角洲越冬的大鸨数量总体上在减少,甚至在某一年度(2001)仅观察到8只大鸨。草地开垦、农田耕作类型改变、农药使用及人为活动干扰可能是造成黄河三角洲大鸨越冬数量减少的主要原因。在未来保护行动中我们应加强大鸨数量动态监测和越冬栖息地选择研究的开展,实施越冬地保护措施,吸引社区参与管理,保护大鸨及其生存环境。 相似文献
2.
3.
水鸟具有重要的生态价值。为掌握辽宁越冬水鸟状况,以便更好地开展保护工作,2015年1月采用直接计数法对辽宁省33处湿地开展了水鸟资源调查,共发现水鸟34种,隶属6目9科,种群数量46 395只。其中种群数量较大的有绿头鸭(18 353只)、赤麻鸭(7739只)、斑嘴鸭(5212只);国家一级保护野生动物有丹顶鹤(37只)、东方白鹳(171只)、大鸨(5只)、遗鸥(1830只)、中华秋沙鸭(7只)、白尾海雕(18只);国家二级保护野生动物有灰鹤(295只)、疣鼻天鹅(2只)、大天鹅(8只)、小天鹅(2只)、鸳鸯(4只)。全省冬季水鸟主要分布在黄海、渤海沿海和鸭绿江、浑河、太子河。建议采取加强种群保护、栖息地保护、执法监管、宣传教育、资源监测和科学研究等措施有效保护管理。 相似文献
4.
5.
6.
7.
《山东林业科技》2021,(2)
山东黄河三角洲国家级自然保护区是天鹅重要的迁徙停歇地及越冬场所,通过连续20年的动态监测显示,自然保护区内栖息的天鹅以大天鹅为主,秋、冬季节最为常见,秋季南迁大天鹅10月中旬陆续抵达黄河三角洲,种群达到2102只,自2014年以来,南迁大天鹅种群持续增加,2018年达到6559只。越冬期大天鹅种群平均达到506只,主要栖息在自然保护区内的湿地恢复区、黄河故道区、冬小麦农田区。近年来,自然保护区内实施了生态多样性保护工程、湿地保护与修复工程、外来入侵植物监测与防治工程,总投资达2.35亿元,为水鸟提供了良好的栖息环境,天鹅的种群数量整体呈增加的趋势,成为其重要的越冬地。 相似文献
8.
9.
10.
11.
12.
于2003、2004和2005年连续3年对黑脸琵鹭在海南岛已知和潜在的越冬地进行调查.分别在东寨港自然保护区、临高县后水湾和东方市北黎湾发现了黑脸琵鹭的越冬种群,后两者是在海南岛首次记录到.2005年海南岛黑脸琵鹭的越冬种群数量已达77只,约占全球越冬种群数量的5%以上,这是继香港和台湾等地之后黑脸琵鹭在中国的又一重要越冬地.调查结果表明:黑脸琵鹭越冬栖息地所面临的主要威胁是湿地滩涂的围垦、海产品挖采和非法猎捕.建议有关职能部门采取有效措施,分别在2个新发现地建立保护机构,并对越冬地周围的村民进行保护意识教育和宣传,以加强黑脸琵鹭及其栖息地的保护与管理. 相似文献
13.
IntroductionTheprofessionalsworkofwildlifemanagementisatargetforpopulationmanagement,butmoreandmoreprofessionalsworkersareinterestedinthemanagementofthewildlifehabitat(Belley,1984).ItisoneofessentiafworksforustoappraisehabitatwiththescientificmanagementontheReddeerpopulation.Soitisusefultoconservation,developmentandutilizationoftheReddeerinananimal'sperspective.Sincethe1970'smanyscientistshavebeenstudyingthehabitatevaluationfordeer.Severalmodelsandmethodssuchasthelineardiagram,thematrixmodel… 相似文献
14.
15.
16.
Six ultimate factors (forage abundance, horizontal sheltering class, distance from human disturbance, snow depth, tree coverage,
and edge effect) of Red deer (Cervus elaphus) were investigated in eastern Heilongjiang Province during winter from 1988 to 1991. On the basis of analysis of field data,
we evaluated winter habitat conditions of Red deer. The results showed as follows: the wintering habitat quality of Red deer
in poplar-birch stands was excellent in the Wanda Mountains, and was moderate in shrub-woods and Korean pine seed stands.
According to habitat index (HI) values, the habitat quality in poplar-birch stands (HI=0.8185) was superior to that in shrub-woods
(HI=0.4825) and in Korean pine seed stands (HI=0.4385). The wintering habitat quality of Red deer in the Wanda Mountains was
superior to that of Dailing Forestry Region. According to the current situations of forestry areas in northeastern China,
strengthening habitat management was important for the conservation and management of Red deer population in the next decades.
This subject is supported by the Natural Science Foundation of Heilongjiang Province.
(Responsible Editor: Zhu Hong) 相似文献
17.
18.
19.
Zhalong National Nature Reserve(Zhalong) is an important stopover for migratory birds.In recent decades,Zhalong has become the focus of researchers and public discussion in relation to irrigation.We studied relationships between birds and habitats at different water levels to guide development of more effective habitat management measures.We used line transects to survey bird numbers and distribution during April-May from 2005-2009 at Zhalong,and used cluster analysis and Chi-Square tests to analyze data.We recorded 139 bird species of 39 families and 13 orders during spring migration,including Anseriformes,Charadriiformes,Ciconiiformes,Columbiformes,Coraciiformes,Cuculiformes,Falconiformes,Galliformes,Gruiformes,Passeriformes,Piciformes,Podicipediformes,Strigiformes.Dominant vegetation and geographic region were the main influence factors of avian distribution.Different ecological groups preferred different water levels(p<0.01) and different habitat types(p<0.01).Grallatores,Natatores and Passeres were the main ecological groups in different wetland habitats,and reed marsh and lake are the main habitats for management.Grallatores preferred reed marsh and lake with water levels >30 cm and 5 15 cm.Natatores preferred lakes with deep water(>30 cm).Passeres preferred open forest and reed marsh with no surface water.Different avian ecological groups occupied specific habitats depending on water level and we recorded some overlaps in bird distribution. 相似文献