| 基于生态功能的滨海湿地土壤质量综合评价方法构建及实证分析 |
| 摘要点击 2600 全文点击 945 投稿时间：2021-08-07 修订日期：2021-10-20 |
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| 中文关键词 土地利用变化 生态功能 土壤质量 胶州湾滨海湿地 InVEST模型 |
| 英文关键词 land use change ecological function soil quality Jiaozhou Bay coastal wetland InVEST model |
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| 中文摘要 |
| 构建了基于生态功能的滨海湿地土壤质量综合评价方法，并以胶州湾滨海湿地为研究对象，评价了其各土地利用类型的各生态功能（生物多样性维持功能、养分维持功能、碳储存功能）指数以及综合质量指数.结果表明：①研究区内生境质量在时空上，总体呈现出较低的水平；各类土地利用类型中，沿海滩涂具有较高的生境质量水平，而建设用地表现出最低的生境质量水平.② 1990~2019年，未利用地向耕地或草地转化有利于碳储量增加，而建设用地持续转入是导致碳储量减少的主要因素.③研究区的土壤养分状况总体为中等水平，耕地土壤养分状况最优，而建设用地和未利用地处于中等偏下水平.④整体上，不同土地利用方式下土壤质量存在显著差异，土壤质量综合指数从大到小表现为：耕地>林地>滩涂>未利用地>草地>养殖池>建设用地.结果表明，在不同土地利用方式下人为干扰的程度和过程对土壤生态质量的影响差异明显. |
| 英文摘要 |
| In this study, a comprehensive evaluation framework of soil quality for coastal wetlands was constructed based on ecological functions. The ecological function indexes, including biodiversity maintenance, nutrient maintenance, and carbon storage, and the comprehensive quality index for each land use type of coastal wetlands in Jiaozhou Bay were evaluated. The results showed that:① the study area had a low level of habitat quality in space and time generally, in which coastal mudflats had a higher level, and construction land showed the lowest level; ② from 1990 to 2019, the conversions from unused land to cultivated land or grassland favored the increase in carbon stocks, whereas the continuous increase in construction lands converted from other land types was the main factor causing the decrease in their carbon stocks; ③ the overall soil nutrients of the different land use types in the study area were generally at a medium level, in which the highest soil nutrient level was found in cultivated land, whereas the lowest was in the construction land and unused land; ④ overall, soil quality differed significantly among land use patterns. The comprehensive index of soil quality indicated an order of cultivated land>forest land>tidal flat wetland>unused land>grassland>aquaculture pond>construction land. This study concluded that the impacts of the degree and process of human disturbance on soil ecological quality was significantly distinguishable under different land uses. |
