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Study on Different Degraded Degrees Grassland Community Structure Characteristics of the Alpine Area

高寒地区不同退化程度草地群落结构特征研究



全 文 :!24" !1#
 Vol.24  No.1
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ACTA AGRESTIA SINICA
   2016$  1%
  Jan.  2016
犱狅犻:10.11733/j.issn.10070435.2016.01.029
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犛狋狌犱狔狅狀犇犻犳犳犲狉犲狀狋犇犲犵狉犪犱犲犱犇犲犵狉犲犲狊犌狉犪狊狊犾犪狀犱犆狅犿犿狌狀犻狋狔犛狋狉狌犮狋狌狉犲
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CHENLele1,2,SHIJianjun2,WANGYanlong2,MAYushou2,
DONGQuanmin2,HOUXiankuan1,2
(1.Qinghaiuniversity,Xining,QinghaiProvince810016,China;
2.QinghaiAcademyofAnimalandVeterinarySciences,Xining,QinghaiProvince810016,China)
犃犫狊狋狉犪犮狋:Differentdegradeddegreesalpinegrasslandplantcommunity,aboveandbelowgroundbiomass
weresurveyedonthewinterandspringdegradationgrasslandinTieLi-jiaovilageofBatangtownYu
shucity.Theresultsshowedthatthisareawasconsistedby42speciesand33generaand16families
plants;thegrasslanddominantspeciechangedfromStipacapilaceatransitiontoAconitumpendulumwith
increasingthedegreeofgrasslanddegradation;totalcoverage,totalbiomassandhighqualityforageof
grasslandalshowedadecreasingtrend;biomassofmiscelaneousgrassincreasedsignificantly(犘<0.05);
andgrasslandqualityandproductivitysignificantlydecreased.
犓犲狔狑狅狉犱狊:Alpinegrassland;Plantcommunity;Dominantspecie;Grasslandquality
HIJK
:20141121;LMJK:20150623
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(2011BAC09B061);ªž*¾¿À´µ(2013N146);º˜‘)(())*/©´(201203006)“Å
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(1989),—,zZ¼PÉ,šË/09,Ì«ÍÎ-_9\HlÐÑ/0,Email:clf518312@163.com;<Ôc™
Authorforcorrespondence,Email:378605242@qq.com
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Fig.1 Importantvaluesofdifferenteconomicgroupsondifferentdegradedgrasslands
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Note:Differentlowercaseletterswithinthesamegroupmeansignificantdifferenceamongdifferentdegradedgrasslandsatthe0.05level
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Table1 Importantvaluesofdominantspeciesandtheseconddominantspeciesondifferentdegradedgrasslands
KG .9-_ iAïð &Aïð •Aïð
Species Nondegraded Lightlydegraded Moderatelydegraded Heavilydegraded
VXZ[
(犛狋犻狆犪犮犪狆犻犾犾犪犮犲犪) 14.45±5.26 4.07±1.52 3.90±1.39 5.01±2.60
&¡v[
(犉犲狊狋狌犮犪狊犻狀犲狀狊犻狊) 11.82±5.45 8.68±2.57 4.75±1.76 —
ÒvÚ*-
(犈犾狔犿狌狊狀狌狋犪狀狊) 11.32±3.74 2.91±1.05 2.90±1.14 —
ô?-
(犓狅犫狉犲狊犻犪犺狌犿犻犾犻狊) 8.01±2.78 8.98±2.57 5.93±2.25 —
&_ôkq
(犘狅犪犮狉狔犿狅狆犺犻犾犪) 6.48±2.90 5.93±1.84 5.41±2.36 —
6f-
(犔犪狀犮犲犪狋犻犫犲狋犻犮犪) 1.27±0.52 21.76±5.96 27.86±5.82 2.61±1.14
fX?-
(犓狅犫狉犲狊犻犪犮犪狆犻犾犾犻犳狅犾犻犪) — 12.74±3.87 — —
­E 
(犃犮狅狀犻狋狌犿狆犲狀犱狌犾狌犿) — — 12.14±3.49 18.15±2.06
¦¨©D-
(犃犼狌犵犪犾狌狆狌犾犻狀犪) — — — 10.91±4.14
åR±²æ
(犘狅狋犲狀狋犻犾犾犪犫犻犳狌狉犮犪) — — — 9.87±3.23
g½ÝB
(犃犮狅狀犻狋狌犿犵狔犿狀犪狀犱狉狌犿) — — — 8.19±2.05
*Family 9 7 9 14
¬ Genus 15 12 16 21
GSpecies 16 15 20 23
cÄA Totalcoverage/% 95.8 87.5 71.5 50.2
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