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1.
梅江流域冬季鸟类群落结构及多样性   总被引:1,自引:1,他引:0  
2010年9月至2011年5月对梅江流域冬季鸟类群落结构及多样性进行了调查,共记录到鸟类161种,隶属于16目36科103属.其中冬候鸟67种,留鸟81种,旅鸟13种;古北界种类77种,东洋界种类50种,广布型种类34种;国家I级保护种类1种,II级保护种类29种,国际湿地公约规定的种类22种.群落多样性指数(Shannon-Wiener)为3.1986,均匀性指数(Pielou)为0.5678.  相似文献   

2.
作者对皇甫山自然保护区49种蝶类的分布规律进行了调查研究,结果表明:皇甫山蝶类呈现东洋界属性及由东洋界向古北界过渡的特征.同时随着海拔升高,东洋界种类递减,古北界成分逐渐增多.  相似文献   

3.
经调查,笔架山公园记录鸟类81种,隶属12目、31科、58属。其中留鸟47种、候鸟30种(冬候鸟23种、S候鸟7种)、旅鸟4种,国家重点保护鸟类6种。东洋界的鸟41种,古北界的20种,埃塞俄比亚界的1种(引进种),古北界和东洋界广泛分布的鸟类19种。在54种当地繁殖鸟类中,东洋界37种。笔架山公园的鸟类组成,东洋种具有显著的优势,并显示闽广沿海亚区的区系特征。文章分析了笔架山不同环境和植被类型分布的不同鸟类生态类群的种类组成和数量特点,评价了鸟类资源的状况,提出了若干保护管理建议。  相似文献   

4.
南洞庭湖湿地鸟类群落结构及多样性分析   总被引:2,自引:2,他引:2  
2005年5月~2007年4月采用固定样带法和样点法对南洞庭湖自然保护区的鸟类群落进行了调查研究,共纪录到鸟类164种,隶属16目42科96属,其中冬候鸟84种、夏候鸟30种、留鸟38种,旅鸟12种,分别占51.22%、18.30%、23.17%、7.32%;古北界种类87种(占52.5%,另有新北界种类1种),东洋界种类43种(占26.9%),广布型种类33种(占20%);国家Ⅰ级保护种类6种,国家Ⅱ级保护种类29种。南洞庭湖湿地鸟类群落多样性指数(Shannon-Wiener)为3.991 0,均匀性指数(Pielou)为0.542 4。通过对该区的鸟类群落结构及多样性进行分析研究,进一步摸清了南洞庭湖湿地鸟类生存现状、类型、分布,从而研究洞庭湖的鸟类资源及生态环境提供科学依据。  相似文献   

5.
商丘师范学院秋季校园鸟类调查   总被引:2,自引:0,他引:2  
2007年和2008年7-11月,应用样线法和鸟鸣声识别法,对商丘师范学院校园鸟的种类和数量进行了调查统计,共记录到鸟类36种,分属6目19科.校园鸟类的优势种是灰椋鸟(Sturnus cineraceus)、树麻雀(Passermontanus)、喜鹊(Pica pica)、灰喜鹊(Cyanopica cyana)、白头鹎(Pycnonotus sineasis)、八哥(Acridotherescristatellus),占16.7%.留鸟有19种,占52.8%,候鸟7种,占19.4%,旅鸟10种,占27.8%;广布种11种,占30.6%,东洋界8种,占22.2%,古北界17种,占47.2%.具有明显的古北界特征.  相似文献   

6.
罗城境内越冬蝗虫有 3总科 9科 2 1属 34种 ,其中东洋种 2 8种 ,占本区已知种类的 82 .4 % ;广布种 5种 ,占15 .3% ;特有种 1种 ,占 2 .3%。从区系的组成 ,以东洋种为主体 ,该区属于东洋界。  相似文献   

7.
作者对皇甫山自然保护区49种蝶类的分布规律进行了调查研究,结果表明:皇甫山蝶类的分布规律进行了调查研究,结果表明:皇甫山蝶类呈现东洋界属性及由东洋界向古北界过度的特征。同时随着海拔升高,东洋界种类递减,古北界成分逐渐增多。  相似文献   

8.
1998年3月底到5月,对四川省大小兰沟自然保护区兽类资源进行了调查,结果表明兽类有63种,分属7目25科51属63种。其中,东洋界有31种,广布种有22种,古北界有10种,国家一级保护动物有2种,回家二级保护动物有12种,我国特产动物有14种。列入IUCN红皮书名录的有8种,列入CITES附录I的有7种、附录I的有7种、附录I的有8种。分析其区系特征,表现为东洋界种类占优势,珍稀兽类较多,特有种类比饲较大。按生态类型分析,表现为小型兽类较多,水栖种类较少。按生境分析,以山地疏林灌丛区和同叶林区的种类最丰富,而针同混交林区和河谷疏林灌丛区的种类较少,水城环境种类最少。  相似文献   

9.
《宜宾学院学报》2019,(6):106-111
2016年至2018年对宜宾学院校园鸟类进行了调查.结果显示,校园内共有鸟类13目39科85种,物种组成以雀形目鸟类占绝对优势(65.88%),区系以东洋界种类为主(57.65%),居留型以留鸟居多(57.65%).校园内的优势鸟种为麻雀、白颊噪鹛、珠颈斑鸠、白头鹎、白鹡鸰;有国家II级保护鸟类5种,分别为普通鵟、白尾鹞、红隼、红脚隼和游隼.  相似文献   

10.
2007-2011年对黑里河国家级自然保护区的鞘翅目昆虫进行了系统的调查研究,经鉴定有14科48属51种.其中叶甲科(Bruchidae)、瓢虫科(Coccinellidae)和天牛科(Cerambycidae)为优势科;保护区鞘翅目昆虫在世界动物地理区划中以古北界和东洋界共同分布种(70.59%)为主;在中国地理分布上以全国广布种(29.41%)为主.  相似文献   

11.
《海外英语》2007,(5):44-45
It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,  相似文献   

12.
一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/  相似文献   

13.
《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?  相似文献   

14.
《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.  相似文献   

15.
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.  相似文献   

16.
王菲 《华章》2007,(12):273-273
Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.  相似文献   

17.
裴水妹 《华章》2007,(11):196
Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.  相似文献   

18.
19.
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…  相似文献   

20.
风的曲线     
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.  相似文献   

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