| 松嫩平原盐碱植物群落形成过程的探讨 |
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| 引用本文： | 郑慧宝 李建东. 松嫩平原盐碱植物群落形成过程的探讨[J]. 植物生态学报, 1995, 19(1): 1-12 |
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| 作者姓名： | 郑慧宝 李建东 |
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| 作者单位： | 中国科学院植物研究所，东北师大草地研究所 |
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| 摘 要： | 据调查分析，松嫩平原的地貌、水文地质、生物气候和土壤等都存在形成盐碱植物群落的潜在条件；人为活动，特别是长期过度放牧，导致羊草草地的退化，出现次生的盐碱植物群落。其过程体现在植被的变化，主要是种类成分的消长和种群动态；土壤的变化包括盐分的含量和组成、pH值、腐殖质含量及其有关的土壤性状；最终盐碱植物与生境达到了动态平衡。整个过程用加权平均指数和群落系数测定了数量指标，说明其变化程度。
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| 关 键 词： | 松嫩平原 盐碱植物群落 羊草 |
A PRELIMINARY STUDY ON THE FORMATION OF SALINE-ALKALI PLANT COMMUNITITES IN THE SONG-NEN PLAIN |
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| Zheng Hui-ying. A PRELIMINARY STUDY ON THE FORMATION OF SALINE-ALKALI PLANT COMMUNITITES IN THE SONG-NEN PLAIN[J]. Acta Phytoecologica Sinica, 1995, 19(1): 1-12 |
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| Authors: | Zheng Hui-ying |
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| Abstract: | The results of our investigations and analyses have shown tkat topogra-phical,geomorphologic,hydrological, climatic and pedological conditions inthe Song-Nen Plain all have potential effects on the formation of saline-alkali plant communities.Human activities suck as overgrazing could bringabout the degradation of Aneurolepidium chinenses grassland,as indicated bythe appearance of saline-alkali plant communities.During the formation ofsaline-alkali plant communities,the species composition and population dy-namics of the original community will change. The changes of the soil pro-perties include salt content and the compositioa Of salt ions,pH,soil organicmatter content and its associated properties. Finally,the saline-alkali plantspecies reach an dynalnic equilibrium with their habitats.Weighted averageindex and community coefficient were employed as quantitative indices to qu-antify the changes of vegetation characteristics during the formation of saline-alkali plant communities. |
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| Keywords: | Song-Nen Plain Saline-Alkali Plant Community Aneu-rolepidium chinenses |
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