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首页> 外文会议>Conference on Ecological Informatics and Ecosystem Conservation >A Novel Index System for Assessing Ecological Risk under Water Stress in the Yellow River Delta Wetland
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A Novel Index System for Assessing Ecological Risk under Water Stress in the Yellow River Delta Wetland

机译：黄河三角洲湿地水分压力下评估生态风险的新颖指标体系

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The Yellow River Delta Wetland (YRDW) is one of the youngest wetlands, and also the most complete, extensive wetlands in warm temperate areas in China. However, since zero flow of the Yellow River from 1972, the degeneration area is over 3 × 104 hm2. To assess the risk caused by water shortage, a new risk assessment index system is imperative. Hence, a two-year experiment on soil and plants is performed to acquire the data for the assessment. We have set up 13 sample fields along both side of the Yellow River, which are all 30m x 30m and spaced evenly. And about 10 soil samples and 10 plant samples are collected from each of the sample field in three seasons including spring, summer and autumn. According to the results of the experiments, we have discovered the rules that the soil moisture affects the community of wetland and three representative species including Phragmites australis, Suaeda salsa., Tamarix chinensis. And the rules are the foundation of the novel ecological risk assessment index system which encompasses three scales including community, single plant and microscopic, and five indices including biodiversity, biomass and absorptivity of elements nitrogen, phosphorus and potassium. Based on the risk assessment index system and GIS, we present a two-level ERA result YRDW in different seasons of each index.
机译：黄河三角洲湿地（YRDW）是最年轻的湿地之一，也是中国温暖温带地区最完整的湿地。然而，由于黄河从1972年的零流动，退变面积超过3×104 HM2。为评估缺水造成的风险，一个新的风险评估指标体系是必要的。因此，进行了两年的土壤和植物实验，以获取评估的数据。我们已经设置了黄河两侧的13个样本领域，全部30米x 30米，均匀间隔。在包括春天，夏季和秋季的三个赛季中的每一个样本场中收集约10种土壤样品和10种植物样品。根据实验的结果，我们已经发现了土壤水分影响湿地和三种代表性物种的规则，包括芦苇澳大利亚，Suaeda Salsa。，Tamarix Chinensis。该规则是新型生态风险评估指标体系的基础，包括三种尺度，包括社区，单株植物和微观，以及五个指数，包括元素氮，磷和钾的生物多样性，生物量和吸收性。基于风险评估指标系统和GIS，我们在每个指标的不同季节呈现了两级的ERA结果YRDW。

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