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碱地肤的生态、生理适应性及其群落特征
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【园林建筑论文】
摘要：本文采用野外调查分析和室内实验相结合的方法，研究了碱地肤(Kochia siever
siana)的生态、生理适应性及其组成的群落，结果表明：(1)碱地肤有一定的耐碱能力，生态幅度较窄。它与生境的关系及种群的数量调节是其生态适应性的体现。(2)碱地肤对盐碱生境的适应是由于体内具有某些生理调节功能，主要的如呼吸强度随着盐浓度升高而下降，同时ATP含量减少；细胞膜透性随着盐浓度增高而加大，脯氨酸的积累增多。(3)碱地肤与不同植物组成多个群落，其生态优势度体现了群落种类组成的变化，反映土壤碱化程度的差异，构成羊草草地退化的一个演替系列。
关键词：碱地肤 生态、生理适应性 生态优势度 演替系列
THE ECOLOGICAL AND PHYSIOLOGICAL
ADAPTATION OF KOCHIA SIEVERSIANA
AND THE CHARACTERISTICS OF THE COMMUNITIES
Zheng Huiying,Shen Quanguang and Yan Tian
(Institute of Botany,The Chinese Academy of Science Beijing 100093)
Abstract Through field investigations and laboratory experiments,
the ecological and physiological adaptations of Kochia sieversiana and
characteristics of the communities were studied in this paper.The
following results are obtained:1.K.sieversiana is an alkali-tolerant
annual herb,and th
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