长江中下游钢丝网石笼护坡生态恢复效果评价*
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国家自然科学基金项目(51879199);湖北省技术创新专项重大项目(2019ACA154)


Evaluation of ecological restoration effect of steel wire mesh stone cage revetment in middle and lower reaches of the Yangtze River
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    摘要:

    近年来长江中下游航道整治实施一系列钢丝网石笼生态护坡工程,但是缺少对这些护坡建成后生态恢复效果的跟踪调查评价。基于2019年汛前和汛后对6个钢丝网石笼护坡植被和基质的调查,开展植被年内以及年际演替分析,并结合水文数据、基质特征及现场观测情况,筛选4个植被特征因子以及17个环境影响因子做相关性分析。结果表明,经过恢复,护坡区由完工时播种的较为单一的植被演替为以草本植物为主的多物种群落,护坡区现场生态恢复效果良好;护坡建成时间、基质中黏土、粉砂、砂石含量以及淹没历时是影响护坡区植被演替的主要影响因子。

    Abstract:

    In recent years,a series of steel wire mesh stone cage ecological revetment projects are carried out in the middle and lower reaches of the Yangtze River,but there is no follow-up investigation and evaluation on the ecological restoration effect after the completion of these projects. Based on the investigation of vegetation and matrix of six steel wire mesh stone cage revetments before and after the flood season in 2019,we analyze the annual and interannual successions of vegetation. Combined with the hydrologic data,matrix characteristics and field observation,we screen four vegetation characteristic factors and seventeen environmental impact factors for correlation analysis. The results show that after restoration,the relatively single vegetation succession seeded at the completion of the revetment protection area is replaced by a multi-species community dominated by herbage plants,and the ecological restoration effect of the revetment protection site is good. The time of revetment,the percentage of clay,silt and sand in the matrix and the duration of inundation are the main factors affecting the succession of vegetation in the engineering area.

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范玉洁,杨中华,邹明哲,等.长江中下游钢丝网石笼护坡生态恢复效果评价*[J].水运工程,2021(1):129-135.

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  • 在线发布日期: 2021-01-08
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