云冷杉林林隙与坑丘微立地对微气候及土壤碳氮的影响

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1、万方数据AbstractinallgapsdecreasedintheorderofAugust，September,andJuly,increasedintheorderofclearing，largegap，mediumgap，smallgap，andtheclosedstand．Inthesalrlegap，PARandairtemperatureonthemoundtopwerehigherthanthoseinthepitbottom，butairrelativehumiditywasopposite．(2)Meanmonthly

2、PPFDandTs0inpitandmoundmicrostes(moundtop，moundface，pitbottomandpitwall)wererankedinthedecreasingorderofJuly>August>September,butmeanmonthlyRH，Ts5andTs10weredecreasedintheorderofAugust>July>September,meanmonthlySWCWashighestonAugust；InJuly,PPFDatmoundtopwas1[heKghest(736．1

3、Ixm01．m-2．s-1、andthelowestinintactforestfloor(25．46rmaol。m-2．s-1)，Tsatmoundtopwashighest(26．29℃)andlowestinpitbottom(5．13℃)；SWCinshallowsoillayerislargerthanindeepsoillayer,SWCwasthehighestinpitbottom(51．58％)onAugust．(3)Thepitandmoundmicro-topographycreatedbyuprootedtreesc

4、hangedthesoilofcarbon，nitrogenandorganicmatter．Comparedthesurfacesoilofcarbonandnitrogenont11epitandmound，wefoundoutthecontentofthenitrogenandorganicmatteronmoundwerehigherthaninpit．TheorganicmattercontentonthemoundofPiceaasperataWashighest．Neitheronthemoundorinthepit．tota

5、lnitrogenwasintheorderofPiceaasperata>Abiesnephrolepis>BetulaplatyphyllaSuEThisstudytookthevalleyofPiceaasperataandAbiesnephrolepisforestinXiaoXing’anMountainsasaresearchobject，measuredthemicroclimateoftheforestgapsformedbytreefalland也epitandmoundmicrosites，analyzedtheorga

6、nicmatter,totalnitrogenandcommunicatetheirC／Nonthepitandmound．Italnlstoprovidebasisdataandpracticalreferencesforaperiodtimeofplantregeneration，t11edegradedecosystemrestorationandthesustainablemanagement．KeywordsPiceaasperataandAbiesnephrolepisforest；forestgap；pitandmoundmi

7、crosites；microclimatefactor；soilofC／N．IV．万方数据目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．】[Abstract⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．】【I】[1绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．：I1．1课题背景(或引言)⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．2国内外研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

8、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11_2．1林隙的形成对光照、空气温度和相对湿度的影响⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯l1_2．2坑丘微立地的形成对光照、空气温度和相对湿度的影响⋯⋯