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基于异速生长理论的准噶尔盆地荒漠灌丛形态研究/Morphological investigation of desert shrubs of China's Junggar Basin based on allometric theory[J]
Authors
LI Song
LI Yan
+8 more
TANG Li-Song
ZHENG Xin-Jun
中国科学院新疆生态与地理研究所阜康荒漠生态系统国家野外观测研究站,乌鲁木齐,830011
中国科学院研究生院,北京,100049
唐立松
李嵩
李彦
郑新军
Publication date
1 January 2011
Publisher
Abstract
为了揭示荒漠灌丛形态的发生发展机制并认识其在荒漠生态系统中的功能,从形态和结构决定功能的原理出发,对生长在准噶尔荒漠东南部的岛状灌丛进行了形态学调查.依据Malthusian方程微分形式,根据异速生长理论,建立了冠幅与株高生长、灌丛表面积与体积生长的数学关系式,利用植被调查数据进行了验证,并最终得出不同灌丛在不同株高时的情景示意图.结果表明:1)将荒漠灌丛形态假设成半三轴椭球体是合理的;2)虽然灌丛形态发展趋势可以是扁平、近半球和竖直3种类型,但是形态建成后,一般维持在扁平和近半球两种类型;3)18类荒漠灌丛的体积和表面积的数量关系具有一定的一致性,可能与同处于相同环境条件下的水分利用效率相近有关
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Last time updated on 29/11/2016