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Characteristics of the Age Structure and Dynamics of Malus sieversii Population

新疆野苹果种群年龄结构特征与动态分析



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,2016,36(4):0811-0817
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犆犺犪狉犪犮狋犲狉犻狊狋犻犮狊狅犳狋犺犲犃犵犲犛狋狉狌犮狋狌狉犲犪狀犱犇狔狀犪犿犻犮狊狅犳
犕犪犾狌狊狊犻犲狏犲狉狊犻 犘狅狆狌犾犪狋犻狅狀
TIANRunwei,CAIXinbin,LIULiyan,JIANGXiaoheng,BUZAOLAMU·Tursun,
MARYAMGULAbrahman
(XinjiangAcademyofForestryResearchInstituteofForestEcology,Urumqi830063,China)
犃犫狊狋狉犪犮狋:Thewildappleforestof犕犪犾狌狊狊犻犲狏犲狉狊犻犻endemictoToliandEminCounties,Xinjiang,weresur
veyedbysamplingmethodoftypicalsamplingmethods.Basedonthesurvivalanalysis,andwithspace(di
ameteratbreastheight,DBH)insteadoftime(ageoftree),weconstructedtheagestructureandstatic
lifetables,anddrewthecurvesofsurvival.Withthetimeseriesmodels,theforecastdevelopmenttrendof
thepopulationwasalsopredicted.Resultsshowedthat:(1)Theindividualnumberofthemiddlelevel(20
<DBH≤30cm)in犕.狊犻犲狏犲狉狊犻犻populationwasrelativelystable.Whiletheindividualnumbersofsaplings
(DBH≤15cm)in犕.狊犻犲狏犲狉狊犻犻populationwasmany,butwasunstable.Thebig(30<DBH≤40cm)and
old(DBH>40cm)treesin犕.狊犻犲狏犲狉狊犻犻populationweresignificantlyreducedasaresultofphysiological
aging,interspecificcompetitionandenvironmentalfactors.(2)Theestimatedsurvivalcurveroughly
showedtheformofDeeveyⅠ.Dynamicperformanceprophaseandmidtermslowgrowth,relativelysta
ble,laterperiodrecession.(3)Timesequencepredictionmodelsfordifferentpopulationsafter10,20and
30yearsindicatedthatthenumberofoldindividualswouldincreaseandthatyoungindividualswouldde
crease,both2populationsshowedapparentlyagingtendency.
犓犲狔狑狅狉犱狊:ToliCounty;EminCounty;犕犪犾狌狊狊犻犲狏犲狉狊犻犻;agestructure;dynamics
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Table1 Thebasicstatusof犕.狊犻犲狏犲狉狊犻犻populations
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Surveyregion
{EÚ
No.ofplots
JZ
Altitude/m \Û Aspect
ÜݽCanopy
coverage/%
uÞyCommunitytype
mno
ToliCounty
1 872.3 185.3°SW 28 *+0rs—ߏ6 Themixedstandsof犕.狊犻犲狏犲狉狊犻犻and犛犪犾犻狓犫犪犫狔犾狅狀犻犮犪L.
2 874.6 4.1°NE 63
*+0rs

à

Aá—â6 Themixedstandsof犕.
狊犻犲狏犲狉狊犻犻,犘狅狆狌犾狌狊,犆狉犪狋犪犲犵狌狊狆犻狀狀犪狋犻犳犻犱犪Bungeand犅犲狋
狌犾犪
3 865.1 17°NE 54 *+0rs

à

Aá—â6 Themixedstandsof犕.
狊犻犲狏犲狉狊犻犻,犘狅狆狌犾狌狊,犆.狆犻狀狀犪狋犻犳犻犱犪Bungeand犅犲狋狌犾犪
4 847.7 333.3°NW 80 *+0rs

à

Aá—â6 Themixedstandsof犕.
狊犻犲狏犲狉狊犻犻,犘狅狆狌犾狌狊,犆.狆犻狀狀犪狋犻犳犻犱犪Bungeand犅犲狋狌犾犪
5 831.4 323.2°NW 80 *+0rs6Thepurestandsof犕.狊犻犲狏犲狉狊犻犻
6 903.1 313.2°NW 42 *+0rs6Thepurestandsof犕.狊犻犲狏犲狉狊犻犻
7 859.0 283.9°NW 100 *+0rs6Thepurestandsof犕.狊犻犲狏犲狉狊犻犻
8 817.7 306.9°NW 22 *+0rs

Aá—â6Themixedstandsof犕.狊犻犲狏犲狉
狊犻犻,犆.狆犻狀狀犪狋犻犳犻犱犪Bungeand犅犲狋狌犾犪
pqo
EminCounty
1 1045.0 109.2°SE 42 *+0rs6Thepurestandsof犕.狊犻犲狏犲狉狊犻犻
2 1065.2 190.5°SW 26 *+0rs

à—ãä6Themixedstandsof犕.狊犻犲狏犲狉狊犻犻,
犘狅狆狌犾狌狊and犘狉狌狀狌狊狆犪犱狌狊L.
3 1087.9 132.6°SE 46 *+0rs6Thepurestandsof犕.狊犻犲狏犲狉狊犻犻
4 1144.7 0.8°NE 51 *+0rs—à6 Themixedstandsof犕.狊犻犲狏犲狉狊犻犻and犘狅狆狌犾狌狊
5 1209.2 56.8°NE 100 *+0rs6Thepurestandsof犕.狊犻犲狏犲狉狊犻犻
6 1023.4 333.5°NW 53 *+0rs6Thepurestandsof犕.狊犻犲狏犲狉狊犻犻
7 994.5 9°NE 23 *+0rs6Thepurestandsof犕.狊犻犲狏犲狉狊犻犻
8 980.3 14.2°NE 26 *+0rs6Thepurestandsof犕.狊犻犲狏犲狉狊犻犻
9 1205.1 48.1°NE 89 *+0rs—Aá6Themixedstandsof犕.狊犻犲狏犲狉狊犻犻and犆.狆犻狀狀犪狋犻犳犻犱犪Bunge
10 1179.7 338.8°NW 93 *+0rs6Thepurestandsof犕.狊犻犲狏犲狉狊犻犻
11 1186.7 101.3°SE 97 *+0rs—Aá6Themixedstandsof犕.狊犻犲狏犲狉狊犻犻and犆.狆犻狀狀犪狋犻犳犻犱犪Bunge
12 1121.1 96.8°SE 52 *+0rs—Aá6Themixedstandsof犕.狊犻犲狏犲狉狊犻犻and犆.狆犻狀狀犪狋犻犳犻犱犪Bunge
13 1086.9 80.4°NE 44 *+0rs—à6 Themixedstandsof犕.狊犻犲狏犲狉狊犻犻and犘狅狆狌犾狌狊
14 1047.5 346°NW 74 *+0rs—à6 Themixedstandsof犕.狊犻犲狏犲狉狊犻犻and犘狅狆狌犾狌狊
-°Š‹≤15cm;Ⅱ-GŠ‹Æ15<x≤
20cm;Ⅲ-}Š‹Æ20<x≤30cm;Ⅳ-´Š
‹Æ30<x≤40cm;Ⅴ-µŠ‹Æ>40cm。å
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è(/01Â

犐狓=(犪狓/犪0)×1000;
犱狓=犐狓-犐狓-1;
狇狓=(犱狓/犐狓)×100%;
犔狓=(犐狓+犐狓+1)/2;
犜狓 =∑


犔狓
犈狓=犜狓/犐狓
犓狓=ln犐狓-ln犐狓+1;
犛狓=犐狓+1/犐狓
0}
,狓Ɛ-¬;犪狓 Æ狓-èÅ䪫¬,
犪0 Æ犪狓 V23å;犐狓 ÛÑ狓 -K3ŽÞ×ؒ
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È狀ª>@åÑ狋Ž?V£Ôå,ø@Æ狀AÈ
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Ⅳ.´,30<DBH≤40cm;Ⅴ.µ,DBH>40cm
ñ1 jkEl*+0rstu–-„…‚ƒñ
Ⅰ~Ⅴ.Treediameteratbreastheight(DBH)levelinsteadofageclassesoftree:Ⅰ.Sapling,DBH≤15cm;
Ⅱ.Smaltree,15<DBH ≤20cm;Ⅲ.Middletree,20<DBH ≤30cm;Ⅳ.Bigtree,30<DBH≤40cm;
Ⅴ.Oldtree,DBH>40cm
Fig.1 Thedistributionofageclassstructureof犕.狊犻犲狏犲狉狊犻犻populationsinTachengprefecture
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Table2 Staticlifetableof犕.狊犻犲狏犲狉狊犻犻populationinTachengprefecture
tu
Populationtype 狓 犪狓 犐狓 犱狓 狇狓 犔狓 犜狓 犲狓 犓狓 犛狓
mno
ToliCounty
Ⅰ 31.25 625.00 -313 -0.50 1093.75 3906.25 6.25 -0.40 1.50
Ⅱ 46.875 937.50 -62.50 -0.07 1437.50 2812.50 3.00 -0.07 1.07
Ⅲ 50 1000.00 875.00 0.88 1062.50 1375.00 1.38 2.08 0.13
Ⅳ 6.25 125.00 -62.50 -0.50 218.75 312.50 2.50 -0.40 1.50
Ⅴ 9.375 187.50 — — 93.75 93.75 0.50 5.23 —
pqo
EminCounty
Ⅰ 48.214 900.002 -66.678 -0.07 1383.34 4316.69 4.80 -0.07 1.07
Ⅱ 51.786 966.680 -33.320 -0.03 1466.68 2933.35 3.03 -0.04 1.03
Ⅲ 53.571 1000.000 800.004 0.80 1100.00 1466.67 1.47 1.61 0.20
Ⅳ 10.714 199.996 33.320 0.17 283.33 366.67 1.83 0.18 0.83
Ⅴ 8.929 166.676 — — 83.34 83.34 0.50 5.12 —
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  Nones:狓.Ageclass;犪狓..Survivalnumber;犐狓.Survivalquantity;犱狓.Deathnumber;狇狓.Mortalityrate;犔狓.Spanlife;犜狓.Totallife;犲狓.
Lifeexpectancy;犓狓.Vanishrate;犛狓.Survivalrate
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Tachengprefecture
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