四合木自然更新及就地保護(hù)途徑的研究.pdf

1、內(nèi)蒙古大學(xué)碩士學(xué)位論文四合木自然更新及就地保護(hù)途徑的研究姓名：王峰申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：生態(tài)學(xué)指導(dǎo)教師：楊持2002.5.10重也昵顯增加?？梢詳喽ㄋ暮夏旧L(zhǎng)發(fā)育緩慢、開(kāi)花結(jié)實(shí)率低與生存環(huán)境惡劣、營(yíng)養(yǎng)貧乏有一定關(guān)系。在對(duì)其進(jìn)行就地保護(hù)時(shí)應(yīng)適當(dāng)?shù)匮a(bǔ)充水分、肥料。龍，關(guān)鍵詞：四合木c種群更新自然保護(hù)區(qū)StudyOntheNaturalRenewalandOnsiteProtectionofTetraenaMongolYcaMaximTet

2、raenaMongolicaisnationalsecond黜protectedpl鯽tdistributesOiltheWebID0RDs訪(fǎng)InnerMongolicaAmonomousIb季0nandattheeasternfootofHelanshanjIlNmgxiaA1咖om01lsRegionatpresentFoⅢpopulationsweresampledfromTaositu∞arlshanIIailaluandSh湯

3、d出鋤whereZMongolicao既啦di捌growtkVtlrouginves喊ZMongolicap12咀乜Oil20linetransects(100mperline)，theresultisthatthefloweringandfrui魄plantsrateandeachplantfructificationrateiSlowBmtherearemany煅flowe6ngplantsandenough缸隨ilgplantsS

4、OthewarehouseofitsseedsiSgoodT獰waysfromseedstosproutsarckeysofonsite口如魄d溉Cb刪旺；lgc。d91and缸鋤：lsoab(100m：perland)onewithanothercomp漲tthecondifiomofZmongolicainnalura／renewalandpassivesurroundingfenceprotectionandpositivesur

5、roundingfenceprotectionweconcludedthatthenm刪ren嘲zl虢sufferedbytheexternalcause；mpassivestmoundingfenceprotendoncaninitiatetheinfluenceofsrtificialfactorbutcannoteffectivelypromotetherenewalofZMongolicaandpromotetherenewal

6、ofpopmaftonbys啪lmdmgfencesandolhermeoSLll2騭ItiStheeffectivewaysofonsiteprotectionWediscoveredthatreseededlandandcontratestlandallhavetheseedliIlg，andthespeedandquantityoh刪edlandaIeallmc孵廿1ancor曲ra∞estla岫d’Theexplanationi

7、sthattheseedwarehouseofZMongolicaisslillac6vityn豫seedljngdoesnothavethehirldr越lceofinternalcausebutneedsuitablemoistumconditionandresourcesspaceMakingemptyspotsandreplenis堍moisturec0刪willeonuibutelotherenewalofZMongolica

8、_E自白嘶velypromotedthegrowthandrenewalofZMongolicabyreplenishmentofmoistureandfertilizerWeconcludedthatrMongolicaplantgrowingslowlyandfruelificationratelowhavecertainrelationswiththepoorerastenceenvironmentandthenmritionPo

9、ssiblylhe盤(pán)幻rtc(M蜘咄ofenergyandnutritionparticularlytheshortcomingofmoisturesupplylearlstoovuleabortioninordertocompensatethentmitionrequirementsofgrowingovulesReplenishingmoismmand危幣liz盯willdogoodtenewalofrMongolicaKeywor