共查询到20条相似文献，搜索用时 78 毫秒
1.
论西洞庭湖湿地生态旅游的开发 总被引：5，自引：0，他引：5
西洞庭湖湿地是洞庭湖区湿地的重要组成部分,拥有典型的温地生态旅游景观和湿地动植物资源。在调查评价西洞庭湖湿地生态旅游资源与环境的基础上,进行该区湿地生态旅游开发的SWOT分析,提出开发的对策和建议,从而实现西洞庭湖湿地生态旅游资源的可持续利用。 相似文献
2.
3.
西洞庭湖湿地保护与开发利用调研报告 总被引：1，自引：0，他引：1
西洞庭湖是整个洞庭湖不可分割的重要组成部分,其湿地资源十分丰富,历年来一直是人们高强度开发的区域.西洞庭湖自然保护区在湿地保护和管理方面采取了开展退田还湖恢复湿地示范项目、加强湿地保护宣传教育、强化湿地保护管理职能、严厉打击野生动物违法犯罪行为、对湿地资源进行动态监测,并与当地渔民一起对湿地资源进行社区共管,开展有机渔业生产、发展生态旅游、合理利用湿地资源等保护管理模式,使西洞庭湖湿地生态系统得到了较好的恢复与保护. 相似文献
4.
三峡工程对洞庭湖环境影响的几个主要方面的探讨 总被引：2，自引：0，他引：2
本文从三峡工程对洞庭湖水文的影响着眼、分析了三峡建设坝对洞庭湖环境影响的几个主要方面，如土地潜育化、鱼类资源、鸟类资源以及血吸虫病流行等。 相似文献
5.
6.
长江委水文局长江中游水文水资源勘测局在洞庭湖共有三队一站,即安乡水文水资源勘测队,洞庭湖水文水资源勘测队、益阳水文水环境监测站、岳阳水文水资源勘测队.分别管辖西洞庭湖、南洞庭湖、资水和东洞庭湖的水文水资源监测.本文专就洞庭湖水文水资源勘测队与益阳水文水环境测站合并后的巡测方案进行初步探讨,以求发挥水文巡测的优势和效益,达到精兵高效的目的. 相似文献
7.
三峡截流前后的2000-2006年的7年洞庭湖共监测到鱼类111种,其组成结构与上世纪70's的资源调查相比有较大变化,明显以鲤、鲫、鲶、黄颡鱼等湖泊定居性鱼类为主,高达92%;“四大家鱼”在渔获物中所占比例降至7.4%,刀鲚等洄游性鱼类已极为罕见,7年间尚未监测到白鲟、鲥鱼、湘华鲮、白甲鱼、稀有白甲鱼、中华倒刺鱼巴等品种;平均渔获量为2.89万t,三峡截流前在3万t左右徘徊,三产截流后渔获量逐年下降,现已降至2.1万t,且多以1-2龄鱼为主,亲鱼补充群体严重不足,池塘化趋势明显,这与三峡等水利工程建设、过度捕捞、水域污染、洲滩垦植等因素密切相关。三峡截流后洞庭湖北水来源减少,南水上涨,污水倒流,渔业污染事故发生频率增加,水体自净化能力降低,经监测初步认为三峡工程已对洞庭湖的渔业资源与生态环境造成了重大影响,必须采取相关对策进行洞庭湖渔业资源与生态环境修复与保护。 相似文献
8.
随着西昌经济的发展,西昌人民对邛海湖渔业资源开发日益加剧,湖区渔业资源种群结构必将受到影响,为了更好的保护湖区鱼类资源的多样性,作者于2011年5月-2012年4月对邛海湖土著鱼种类进行了调查。并对调查结果进行了分析,提出了保护意见,以期为水产、渔政、科研等提供参考。 相似文献
9.
10.
青山垸湿地恢复与鸟类资源保护研究 总被引：1，自引：0，他引：1
1998年青山垸退田还湖,是洞庭湖中退田还湖的一个典型代表,1999年西洞庭湖省级自然保护区与世界自然基金会合作,在青山垸开展了＂恢复湿地和社区共管＂示范项目,其生态环境和湿地资源都发生了很大的变化,尤其是鸟类资源变化十分明显。2004～2009年,笔者对青山垸的鸟类资源进行了动态监测,记录到并鉴定出鸟类135种,分属于8目35科,本文对青山垸的鸟类资源变化情况进行了总结,并对青山垸鸟类资源保护和湿地资源管理模式进行了探讨。 相似文献
11.
12.
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.
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
16.
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
17.
18.
RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
19.
20.
唐芳 《读与写:教育教学刊》2008,5(6)
During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context. 相似文献