| 天津地区湿地土壤种子库及其在受限空间中的植被演替研究 |
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| 引用本文： | 莫训强,王秀明,孟伟庆,李洪远.天津地区湿地土壤种子库及其在受限空间中的植被演替研究[J].水土保持通报,2012,32(4):219-224. |
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| 作者姓名： | 莫训强 王秀明 孟伟庆 李洪远 |
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| 作者单位： | 1. 南开大学环境科学与工程学院,天津,300071
2. 天津师范大学城市与环境科学学院,天津,300387 |
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| 基金项目： | 天津市科技支撑计划重点项目“滨海新区湿地生态恢复关键技术与开发利用模式研究”(08ZCGSF00200);天津市自然科学基金重点项目“天津滨海新区土地利用变化及土壤有机碳预测研究”(11JCZDJC24500) |
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| 摘 要： | 湿地土壤种子库运用对植被恢复的研究具有重要意义。从植被演替的角度出发,设置相对封闭的受限空间,持续监测土壤种子库萌发及其后续植物群落的演替情况,记录物种组成、群落多样性指数和群落覆盖度等参数的变化规律,评估了采用湿地土壤种子库进行植被恢复的效果。并对地面植被、土壤种子库及其演替植被的群落相似性指数进行了对比分析。结果发现:(1)土壤种子库恢复后期的植被与地面植被相似度较低(小于0.25);(2)植被恢复过程中,群落多样性指数呈现先降低后升高的趋势,而恢复3a后的植被群落多样性指数均接近于地面植被;(3)生长期的群落覆盖度高于90%,能够满足天津地区滨海盐碱型湿地植被恢复的要求。
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| 关 键 词： | 湿地土壤 种子库 受限空间 植被恢复 演替 |
| 收稿时间： | 2011/10/27 0:00:00 |
Soil Seed Bank and Vegetation Space of Wetland in Succession in a Confined Tianjin Region |
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| MO Xun-qiang,WANG Xiu-ming,MENG Wei-qing and LI Hong-yuan.Soil Seed Bank and Vegetation Space of Wetland in Succession in a Confined Tianjin Region[J].Bulletin of Soil and Water Conservation,2012,32(4):219-224. |
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| Authors: | MO Xun-qiang WANG Xiu-ming MENG Wei-qing and LI Hong-yuan |
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| Institution: | 1(1.College of Environmental Science and Engineering,Nankai University,Tianjin300071,China;2.Urban and Environmental Science College,Tianjin Normal University,Tianjin300387,China) |
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| Abstract: | Soil seed banks are of great importance for wetland vegetation restoration.The community successions of the vegetation restored from soil seed banks in a confined space were observed and recorded during the field experiments.Sorensen similarity coefficient(SSC),species composition and corresponding diversity indices(including Shannon—Wiener index,Simpson index,Pielou index and Margalef index)and vegetation coverage indices were calculated and compared at each stage of the vegetation succession to access the status of re-vegetation.According to the measured data,it was found that the SSCs of the original aboveground vegetation and the restored vegetation in 2008,2009and 2010were relatively low,with the lowest SSC of 0.25.The diversity indices showed a trend of decreasing at the beginning and then increased,and finally reached a state similar to that of the original aboveground vegetation.In addition,the vegetation coverage indices were higher than 90%,which satisfy the common requirements of wetland vegetation restoration. |
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| Keywords: | wetland soil seed bank confined space vegetation restoration succession |
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