北方环境
北方環境
북방배경
INNER MONGOLIA ENVIRONMENTAL SCIENCES
2011年
9期
222-225
,共4页
TWINSPAN%DCA%群落多样性%锡林郭勒盟
TWINSPAN%DCA%群落多樣性%錫林郭勒盟
TWINSPAN%DCA%군락다양성%석림곽륵맹
TWINSPAN%DCA%plant communities diversity%XiLinGole
应用双指示种分析法TWINSPAN（Two-Way Indicators Species Analysis,TWINSPAN）和无偏对应分析DCA（Detrended Correspondence Analysis,DCA）对2005年7月中旬在锡林郭勒盟不同草原类型下采集的32个样方进行分类和排序处理。研究结果表明：1）研究区依据水分的差异包括3个不同草原类型（荒漠草原、典型草原、草甸草原）,再依据热量和人为干扰的差异包括8个植物群落类型;2）草原植物群落多样性随荒漠草原-典型草原-草甸草原的变化而增加;在中度干扰下,草原植物群落比原生群落具有更高的多样性;不同草原类型过渡带的草原植物群落结构多样性比物种多样性明显。
應用雙指示種分析法TWINSPAN（Two-Way Indicators Species Analysis,TWINSPAN）和無偏對應分析DCA（Detrended Correspondence Analysis,DCA）對2005年7月中旬在錫林郭勒盟不同草原類型下採集的32箇樣方進行分類和排序處理。研究結果錶明：1）研究區依據水分的差異包括3箇不同草原類型（荒漠草原、典型草原、草甸草原）,再依據熱量和人為榦擾的差異包括8箇植物群落類型;2）草原植物群落多樣性隨荒漠草原-典型草原-草甸草原的變化而增加;在中度榦擾下,草原植物群落比原生群落具有更高的多樣性;不同草原類型過渡帶的草原植物群落結構多樣性比物種多樣性明顯。
응용쌍지시충분석법TWINSPAN（Two-Way Indicators Species Analysis,TWINSPAN）화무편대응분석DCA（Detrended Correspondence Analysis,DCA）대2005년7월중순재석림곽륵맹불동초원류형하채집적32개양방진행분류화배서처리。연구결과표명：1）연구구의거수분적차이포괄3개불동초원류형（황막초원、전형초원、초전초원）,재의거열량화인위간우적차이포괄8개식물군락류형;2）초원식물군락다양성수황막초원-전형초원-초전초원적변화이증가;재중도간우하,초원식물군락비원생군락구유경고적다양성;불동초원류형과도대적초원식물군락결구다양성비물충다양성명현。
Used the methods of TWINSPAN（Two-Way Indicators Species Analysis,TWINSPAN）and DCA（Detrended Correspondence Analysis,DCA）dealt with the data which were observer on 32 sits in the middle of july,2005.The result indicated that ：1,The area contains three grassland types-the steppe-desert steppe-typical meadow based on the difference of water,then according to the difference of heat and disturbance,it also contains 8 plant communities;2,Plant community diversity increases along the steppe-desert steppe-typical meadow,Plant communities are more diverse than prime community with intermediate disturance,Conmmunities structure diversity increase stronger than biodiversity in the ecoton.
