簡介:英語備課大師ENEYWEDUNET【全免費】“備課大師”全科【9門】免注冊,不收費HTTP//WWWEYWEDUCN/第三部分第三部分題型四題型四2015昆明卷ATTHEAGEOF16,JULIALEFTSCHOOLANDWORKEDATARESTAURANTFORMANYYEARS,SHEWASONLYINTERESTEDINMAKINGMONEYTHENONEDAYSHEHADASERIOUSCARACCIDENTWHICHCHANGEDHERLIFE“IHADATERRIBLECARACCIDENTINAUGUST1996ITTOOKME10MONTHSTORECOVER康復(fù)FROMTHEACCIDENTDURINGTHATTIME,IREALIZEDIWANTEDTOFINDAMOREMEANINGFULREASONFORBEINGHEREINTHISWORLD,”SAIDJULIAASSOONASSHERECOVERED,JULIAGAVEUPWORKINGATTHERESTAURANTANDTRAVELEDTOCALIFORNIAONEDAYSHEFOUNDABIGCOMPANYWANTEDTOCUTDOWNPARTOFAFORESTINTHEFORESTTHEREWERELOTSOFREDWOODTREESONEOFTHETREESWASMORETHAN1000YEARSOLDTHENJULIALEARNEDAGROUPCALLEDOUREARTHWASTRYINGTOSAVETHEREDWOODFORESTFROMTHECOMPANYTHEYDECIDEDTOFINDSOMEONETOLIVEINAREDWOODTREEANDHOPEDTHISWOULDSTOPTHECOMPANYFROMCUTTINGTHETREESDOWNJULIAVOLUNTEEREDJULIALIVEDINTHETREEFOROVERTWOYEARSWITHOUTEVERGOINGDOWNITWASCOLDANDWETINAREDWOODTREETHEREWEREEVENVERYSERIOUSWINTERSTORMSWHILEJULIAWASINTHETREEFINALLYTHECOMPANYDECIDEDTOPROTECTTHETREEJULIALIVEDINTHEYAGREEDNEVERTOCUTDOWNTHEBIGREDWOODTREEORTHETREESAROUNDITWHENJULIAPUTHERFEETONTHEEARTH,SHEBEGANTOCRYBUTSHECONTINUEDTODOOTHERTHINGSTOPROTECTTHEENVIRONMENT根據(jù)短文內(nèi)容,判斷下列句子的正誤,正確的填“T”,錯誤的填“F”。T1MAKINGMONEYWASTHEONLYTHINGJULIATOOKANINTERESTINWHENSHEWORKEDATARESTAURANTF2AFTERJULIARECOVERED,SHEWENTTOPROTECTTHEENVIRONMENTATONCET3JULIASLIVINGINTHEREDWOODTREESTOPPEDTHECOMPANYFROMCUTTINGTHETREESDOWNF4THELIFEINTHETREEFORJULIAWASCOMFORTABLEANDENJOYABLET5JULIAUNDERSTOODTHEREWEREMOREMEANINGFULTHINGSTODOFROMHEREXPERIENCES【文章大意】本文是一篇記敘文。16歲輟學(xué),在一家餐館打工的JULIA只想著賺錢。然而,一場突如其來的車禍改變了她的人生。在恢復(fù)期間,她開始重新認(rèn)識自己,想要做一英語備課大師ENEYWEDUNET【全免費】“備課大師”全科【9門】免注冊,不收費HTTP//WWWEYWEDUCN/BREADANDPOTATOESDONOTHAVEFATINTHEMBUTEATINGTOOMUCHANDNOTEXERCISINGCANMAKEPEOPLEFATALSO,ADDINGTHINGSLIKEBUTTERTOTHEMCANRAISETHECHANCEOFBECOMINGFAT根據(jù)短文內(nèi)容,判斷下列句子的正誤。正確的填“T”,錯誤的填“F”。T1ITISHELPFULTODRINKSOMECHICKENSOUPTOFIGHTACOLDF2TOGETENOUGHPROTEINANDBEHEALTHY,PEOPLEMUSTEATMEATT3PROTEINCANBEFOUNDINTOFU,EGGSANDSOMEVEGETABLEST4TEAISBETTERTHANCOFFEEINFIGHTINGCANCERF5PEOPLEWHOLIKEBREADANDPOTATOESBECOMEFATEASILY【文章大意】本文是一篇說明文。主要介紹了常見的幾種食物或飲料對人體健康的影響。比如雞湯可以幫助抗癌;豆腐、雞蛋、蔬菜中富含蛋白質(zhì);喝茶比喝咖啡更好;少吃奶油和面包,多多鍛煉等。2013云南卷ONEDAYAPOORMANWASCUTTINGABIGPIECEOFWOODNEARARIVERSUDDENLYHISOLDAXE斧頭FELLINTOTHEWATERHEFELTVERYSADBECAUSEHELOSTHISONLYAXETHENALLATONCEABEAUTIFULFAIRY仙女CAMEOUTANDASKEDTHEMANWHATWASTHEMATTER“IHAVELOSTMYAXE”HESAID“ITFELLINTOTHEWATERWHENIWASCUTTINGTHEWOOD”THEFAIRYSHOWEDHIMAGOLDAXEANDASKED,“ISTHISYOURS”“NO”SAIDTHEMANTHEFAIRYTHENSHOWEDHIMASILVERAXEANDASKEDAGAIN,“ISTHISYOURS”“NO”AGAINANSWEREDTHEMANTHENSHESHOWEDHIMTHEOLDAXE“YES,THISISMINE”CALLEDOUTTHEHAPPYMAN“IKNOWTHATWELLENOUGH”SAIDTHEFAIRY,“IONLYWANTTOSEEIFYOUCANTELLMETHETRUTH,ANDNOWILLGIVEYOUTHEGOLDAXEANDTHESILVERAXEBESIDESYOUROWNONE”根據(jù)短文內(nèi)容,判斷下列句子的正誤。正確的填“T”,錯誤的填“F”。F1THEMANWITHHISOLDAXEFELLINTOTHERIVERT2THEFAIRYCAMEOUTANDASKEDWHATWASWRONGWITHHIMF3THESADMANONLYWANTEDTHEGOLDANDSILVERAXEST4THEFAIRYFOUNDHISLOSTAXEFORTHEMANT5FROMTHESTORY,WEKNOWTHATANHONESTMANMAYGETMORE【文章大意】本文是一篇神話故事。一個窮人在河邊砍樹,不小心將斧頭掉到了河里,一個仙女先后給了他金斧子和銀斧子來考驗他,他的誠實感動了這個仙女,最后仙女將金斧子和銀斧子一起送給了他。
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簡介:1鷹嘴界自然保護區(qū)不同植被類型鷹嘴界自然保護區(qū)不同植被類型土壤水源涵養(yǎng)功能研究土壤水源涵養(yǎng)功能研究?張展,王忠誠,周亮(中南林業(yè)科技大學(xué)林學(xué)院,湖南長沙410004)摘要本文對鷹嘴界自然保護區(qū)闊葉林、杉木毛竹混交林和杉木林的土壤容重、孔隙度、蓄水性能以及滲透性能等進行了研究。結(jié)果表明,不同林分類型土壤容重和土壤孔隙度(045CM)差異較大,容重大小依次為杉木毛竹混交林>杉木林>闊葉林;非毛管孔隙度的大小為杉木林>杉木毛竹混交林>闊葉林;毛管孔隙度的大小為闊葉林>杉木毛竹混交林>杉木林;總孔隙度的大小為杉木林>闊葉林>杉木毛竹混交林。土壤有效蓄水量大小順序為杉木林>杉木毛竹混交林>闊葉林;最大蓄水量為闊葉林>杉木林>杉木毛竹混交林;穩(wěn)滲速度為闊葉林>杉木林>杉木毛竹混交林。該研究結(jié)論對鷹嘴界自然保護區(qū)水源涵養(yǎng)林建設(shè)實踐具有一定的參考價值。關(guān)鍵詞水源涵養(yǎng);林分類型;孔隙度;鷹嘴界自然保護區(qū)STUDYONWATERCONSERVATIONFUNCTIONOFSOILOFDIFFERENTFORESTTYPESINYINGJIEZUINATURERESERVEZHANGZHANG,WANGZHONGCHENG,ZHOULIANG(SCHOOLOFFORESTRY,CENTRALSOUTHUNIVERSITYOFFORESTRYANDTECHNOLOGY,CHANGSHA410004,HUNANCHINA)ABSTRACTSOILBULKDENSITY,SOILPOROSITY,WATERHOLDINGCAPACITYANDPERMEABILITYOFTHEFORESTLANDFORBROADLEAFFOREST,CHINESEFIRFORESTANDTHEMIXEDFORESTOFCHINESEFIRANDMOSOBAMBOOINYINGJIEZUINATURERESERVEWERESTUDIEDRESULTSINDICATETHATTHEREEXISTOBVIOUSDIFFERENCESINSOILBULKDENSITYANDSOILPOROSITYAMONGDIFFERENTFORESTTYPESTHESOILBULKDENSITYOFTHEMIXEDFORESTOFCHINESEFIRANDMOSOBAMBOOISTHEBIGGESTANDTHATOFBROADLEAFFORESTISTHESMALLESTTHENONCAPILLARYPOROSITYOFCHINESEFIRFORESTISTHEBIGGESTANDTHATOFBROADLEAFFORESTISTHESMALLESTTHECAPILLARYPOROSITYOFBROADLEAFFORESTISTHEBIGGESTANDTHATOFCHINESEFIRFORESTISTHESMALLESTTHETOTALPOROSITYOFBROADLEAFFORESTISTHEBIGGESTANDTHATOFCHINESEFIRFORESTISTHESMALLESTTHEEFFECTIVESOILWATERSTORAGEOFCHINESEFIRFORESTISTHEMOSTWHILETHATOFBROADLEAFFORESTTHELEASTTHEMAXIMUMWATERSTORAGEOFBROADLEAFFORESTISTHEMOSTWHILETHATOFTHEMIXEDFORESTOFCHINESEFIRANDMOSOBAMBOOTHELEASTTHESTABLEPERMEABILITYRATEOFBROADLEAFFORESTISTHEBIGGESTWHILETHATOFTHEMIXEDFORESTOFCHINESEFIRANDMOSOBAMBOOTHESMALLESTTHESECONCLUSIONSABOVEAREOFCERTAINREFERENCEVALUETOWARDTHECONSTRUCTIONOFWATERCONSERVATIONFORESTINYINGJIEZUINATURERESERVEKEYWORDSSOILANDWATERCONSERVATIONFORESTTYPESSOILPOROSITYYINGJIEZUINATURERESERVE?項目基金湖南省森林生態(tài)公益林效益監(jiān)測與評價(2130209)作者簡介張展(1987),男,湖南長沙人,碩士研究生,方向林業(yè)生態(tài)工程通訊作者王忠誠(1970),男,湖南新寧人,副教授/碩導(dǎo),EMAILWZC366163COM3表2不同植被類型土壤的物理性質(zhì)不同植被類型土壤的物理性質(zhì)TAB2THEPHYSICALPROPERTIESOFSOILINDIFFERENTVEGETATIONTYPES植被類型土壤厚度CM有機質(zhì)GKG1土壤容重GCM3毛管孔隙度非毛管孔隙度總孔隙度015422310637241044476815303711131427954548243045285212741805374717闊葉林平均值359512140617094770015473512334561327478315304159147360354641493045307114937454904236杉木毛竹混交林平均值3988140360178843890154095125403514895523153032631283229127945083045179213333338954228杉木林平均值3050129353212214753311土壤容重變化分析土壤容重的數(shù)值大小,受土壤質(zhì)地、結(jié)構(gòu)、有機質(zhì)含量以及松緊度的影響。土壤疏松多孔或者有大量孔隙的,容重值小,反之土壤緊實少孔的則容重大。測定結(jié)果表明,3種植被類型林地土壤容重值的范圍為106149G/CM3,平均值為131G/CM3。其中闊葉林(121G/CM3)、杉木毛竹混交林(140G/CM3)、杉木林(129G/CM3)。00204060811214160153045土層深度CM容重G/CM3闊葉林杉木毛竹混交林杉木林圖1不同植被類型土壤容重變化不同植被類型土壤容重變化FIG1VOLUMEWEIGHTCHANGESOFSOILINDIFFERENTVEGETATIONTYPES由表2及圖1可以看出,各種林分植物根系活動和枯落物的分解等作用使林地各層土壤結(jié)構(gòu)得到明顯的改善,闊葉林和杉木毛竹混交林土壤結(jié)構(gòu)的改善尤其明顯。由于杉木和毛竹根系分布較淺使土壤容重隨著深度的增加逐漸變大。闊葉林土壤容重在底土層有所變小,這主要是由闊葉樹的根系分布較深所致。312土壤孔隙度特征分析土壤孔隙的數(shù)量、大小和分布是土壤物理性質(zhì)的基礎(chǔ),也是評價土壤結(jié)構(gòu)特征的重要指標(biāo)。土壤毛管孔隙度越大,土壤蓄水能力越強。土壤非毛管孔隙是土壤重力水移動的主要通道,其數(shù)量的多少直接影響土壤蓄水能力和調(diào)節(jié)水分功能的強弱9。研究發(fā)現(xiàn),土壤總孔隙度在50左右,其中非毛管孔隙占1/52/5時,土壤的通氣性、透水性和持水能力比較協(xié)調(diào)10。00020040060080010001200140016000153045土層深度CM非毛管孔隙度闊葉林杉木毛竹混交林杉木林圖2不同植被類型土壤非毛管孔隙變化不同植被類型土壤非毛管孔隙變化FIG2NONCAPILLARYPOROSITYCHANGESOFSOILINDIFFERENTVEGETATIONTYPES從表2及圖2可見,土壤各層的非毛管孔隙度變化趨勢與土壤容重的變化恰恰相反。3種不同植被類型土壤非毛管孔隙度的大小順序表現(xiàn)為杉木林(1221)>杉木毛竹混交林(788)>闊葉林
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