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Yuan Li Li Xiaomin Yu Hongxian Guo Libin Zhang Taizhong Gao Qingjun Zeng Daihua 《林业研究》1997,8(4):235-239
There are five species of swan in the world. Three of them were recorded in China. They are whooper swan (Cygnus cygnus), whistling swan (Cygnus columbianus) and mute swan (Cygnus olor). Among them. whooper swan is the most famous in China. Whooper swan is a resident bird in China. They breed in Xinjiang
Ugyur Autonomous Region. Inner Mongol Autonomous Region. Heilongjiang Province. etc., and winter in Qinghai. Shandong. Henan
Province, etc, and the lower reaches of the Changjiang River. The total number in China is about 5.000 in breeding grounds
and 15.000 in wintering grounds. Higher number were found in 1960s. Because of the changes in environment and hunting, of
picking up eggs and of catching nestlings, their population is being reduced rapidly. They are in danger now. In order to
protect the whooper swans, some protection measures must be taken, such as strengthening public education and scientific research,
estabilshing a base of raising and breeding: developing international cooperation, strengthening the construction of natural
reserves in the breeding and wintering grounds. Up to the end of 1993. 34 natural reserves have been established in China.
(Responsible Editor: Sun Yueqi) 相似文献
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INTRODUCTPNHeilongiiangProvinceislocatedinnorth-eaStChina(l2l"l9,-l3"55'Eand43"35,-53"o5'N).Itstotalareaisabout4.6xlo5kInzandabout4.8%ofChinatemtory.AndthelargestmarshIandinChina--TheSan-jiangPlain,withanareaofoverl.oxlO'k,112islocatedhere.ThismarshlandprovidesanexceIlenthabitatsforwaterfOwsIllLittledaawasavailableonbirdsintheregronbefOrel96os.Thegovernn1entofHeilonaiiangProvinceorganizedtwosurveysofwildlifeinthelQ7Osandl983resPechvely.nsTEWroareruODSThewholesurveyonnumberandd… 相似文献
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西部开发与生态环境保护和建设 总被引：7，自引：1，他引：6
现在所说的西部,包括我国地理位置上的西部和西南２大区域的大西部,含有多个气候 共１２个省区市,其中西藏暂未列入,实有１１个省区市,土地面积、耕地、人口分别占全国的６９．９１％、工．１８％和２８．２９％。共有８４７个县市,其中国家扶贫县３６１个,占大西部总县数的４２．６２％,占全国扶贫县的６１％。 相似文献
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目前我国已建立474个国家级自然保护区,总面积占我国陆地面积的10.13%,在我国大陆31个省、直辖市、自治区都有分布。在全国的分布特点为数量“东多西少”,面积“西大东小”。从人均和占省域土地面积比例来看,西藏自治区以 11080 m2/人和33.105%为全国各省域最高。以祁连山等16个典型的国家级自然保护区为例通过分析发现,当前存在的突出问题包括非法开采各类资源,周边企业污染和侵占保护区土地,违法建设各类设施与建筑,其他活动破坏自然保护区生态环境,监管不足,整改不力。分析导致这些问题的根源是“经济”原因,认为解决问题的关键还是要健全监督、管理体系,藉此提出健全法律法规,丰富监督手段,建立区长制等对策、措施。 相似文献
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文章调查报道岱海的鸟类资源,并对湿地鸟类的保护管理提出了相应的建议。共观察记录到68种鸟类,录属于14目27科50属。鸟类组成以鸻鹬类、雁鸭类和鸥类为主体类群。候鸟有56种,占总数的82.4%,其中夏候鸟有43种,旅鸟有13种;留鸟12种,占总数的17.6%。55种繁殖鸟类中古北种有38种,占繁殖鸟总数的69.1%,区系上明显以古北界成分为主。有国家一级保护鸟类黑鹳、二级保护鸟类白琵鹭、大天鹅、白尾鹞、红脚隼、属世界受胁鸟类鸿雁以及《中国濒危动物红皮书》中的未定濒危级别种黑尾滕鹬等7种。 相似文献
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JIAO Zhen-biao ;WAN Tao ;WEN Jun-bao ;HU Jia-fu ;LUO You-qing ;FU Lin-ju ;Zhang Lin-sheng 《中国林学(英文版)》2008,10(2):119-124
The feeding habits of the Great Spotted Woodpecker （Picoides major） were surveyed by field observations and trace checking from 2005 to 2007, in Wulate Qianqi County, Inner Mongolia Autonomous Region, China, during which the woodpecker performed fourteen types of foraging techniques. Pecking and hammering were most common in winter; gleaning and probing were most common at times of high food availability at the trunk and tree branches during the breeding season and in summer. The woodpecker gleans arthropods and insect larvae in the breeding season and summer, seeds and nuts mainly in the winter and pokes holes for sap-sucking in winter. The main diet consisted of arthropods and plant seeds. The diet was significantly different between seasons The Great Spotted Woodpecker primarily consumes defoliators and the food on tree trunks from March to October. The contribution of wood borers to the diet was higher in winter, lower in the breeding season and summer. The proportion of the food on ground was small in the breeding season and high in the Summer and winter. 相似文献
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In this paper a general introduction is given to research advances in genetics improvement and breeding of Chinese aspen (Populus davidiana Dode) in China. This introduction includes natural distribution and collection, conservation, gene diversity, provenance
trial, crossing breeding, vegetative propagation and disease resistant etc. Based on the current situation of forest tree
breeding in China, some strategic suggestions concerning the future development of Chinese aspen genetics improvement in China
are presented, taking into consideration the existing domestic demands of forestry production and international trends in
forest tree breeding.
Responsible Editor: Chai Ruihai 相似文献
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Distribution of cranes in Hulunber Grassland and Daxing'an Mountains Forest Region in Inner Mongolia
lntroductionAnimaIResearchlnstituteoftheChineseAcademyofSciences.ForestProgramInstituteofDaxing'anMountain,InnerMongoliaUniversity,lnnerMongoIiaFarmingandAnimalHusbandryCoIlege,NortheastForestryUniversity,etc.haveconductedaseriesofinvestigationandstudiesonthefauna,popuIationofeconomic-valuedspeciesandmousepestcontrolinlnnerMongoIianD..i.gi..MountainsForestsandHulunberGrassIand.AfewmonographsandpapersonitwerepubIished.Butspecificstudiesandthor-Oughinvestigationhavenotbeendoneoncran… 相似文献
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IntroductionBreedingofChineseaspen(Populusd8vjdtanaDode)inChinastartedin195O'swhenthefirstcrossingsweremadebyProfessorYiPeizhongin1946attheagriculturecollegeofChinacenter(Yi1955)andXuWeiyingin1954attheChineseforestryresearchinstitute(XuandHuangetal.1956).CrossingwasmadebetweenPOoUPIushOPej8nsiSandPd8vha8na,Pd8VdenaandPsdrionIjDuringtheperiod196o-197o,greatattentionwaspaidtothehybridizationbetWeenPOPulUsgenusorraces(Han1995).Themosteffective,systematicresearchworkbegantodeveIopsin… 相似文献
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内蒙古自治区提出"把内蒙古建设成祖国北方重要的生态防线"的目标,经过京津风沙源工程的综合治理,生态恶化的趋势基本得到有效控制,原有植被得到了有效保护和恢复,沙源工程区已由最初的沙源加强区变为减弱区,绿色生态屏障功能日益显现。森林覆盖率增幅在内蒙古自治区实施的全国六大林业重点工程中是最高的,京津风沙源取得了显著的生态、经济和社会效益;同时,内蒙古自治区大部分处于干旱和半干旱地区,自然条件恶劣,生态建设的难度较大,构筑祖国北疆绿色生态屏障,任务艰巨,责任重大。 相似文献
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CONFUSACRISVIRIDISSP.NoV.(FIGS-l-5)Ma1eBodysmaller,headshort,lengthshorterthanpronotum.Vertextri-angle,withdistinctmediancarina.Foveolaeabsent,fronsseeninprofileverysloping.Frontalridgedistinct,withashal-lowgrooveinaIlthelength.Eyesoblong,itsverticaldiameterl.4otimesthehorizon-taldiameter,l.l7timesthelengthofsubocularsuture.Antennanarrowensiformandlonger,itslengthl.74timesthelengthofheadandpronotum;thelengthofmiddlejointl.83timesitswidth.Anteriormarginofpronotumstraight,posteriorma… 相似文献
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戴萍 《内蒙古林业调查设计》2013,36(4)
内蒙古自治区是我国的森林碳汇大区,文章针对内蒙古自治区增加森林碳汇所面临的一系列问题,提出了相应的对策建议,以期能够充分利用内蒙古的森林资源,实现低碳经济的飞跃发展。 相似文献