敦煌市養(yǎng)羊業(yè)存在的問題及對策.pdf

1、ffl0238髓勢t—一密級，單位代日10733‘甘肅農業(yè)大學學位論文敦煌市養(yǎng)羊業(yè)存在的問題及對簧ExistingProblemsandPolicesCdmcerningtheSheep。HerdingIndustryinDunhuangCily趙廷乾≈h。●。、。指導姑_擅墮獸鏨韭型盟童盤蘭一苧型型嬰’‘一瀹舟n高擐雷幢日fⅢm市1|轉中o1酉_t：蝴m)——■—————=●■———————————————————一＆2禰二魚里量二二

2、’々業(yè)擺域——_菱—塾一t譜學＆‰捌——墮』一％!奎目瓣緲生地8墊登培寓替辯目新j鯉繾也旦!!L學位授日期——型生生些旦咀善辯譬￡舍主席測重塑L_受塞里一”閹^堡蕉垂—撻—墨一苧宣墊—塑壁壘一_曼堇匿1J鰱虹ExistingProblemsandPolicesConcerningtheSheep—HerdingIndustryinDunhuangCityAccorditagtothespiritoftheDunhuangmunicipa

3、lgovernment’saswellasthedemandsthecompleteimlementationofitsclosuretoherding，theprotationandimprovementoftheecosystemandtheincreaseofboththedegreeofgrasscoverandtheproductivityofthegrassland，themainpointofthisdocumentist

4、oprovideananalysisconcerningexistingproblemincludingthedeclineofourcity’swatertable，theseriousdeteriorationintheconditionofthegrassland，thedigiadationoftheecosystem，andaspectsthatexistwithinthesheep—herdingindustrysuchas