摘要
针对土壤中-轻度重金属污染监测中缺乏实时高效的方法技术问题,提出了一种利用遥感数据进行风险估算的计算模型。以湘江流域下游区生态地球化学调查数据与遥感数据的相关性分析为基础,探讨土壤化学组分及重金属元素含量与地表光谱曲线的关系,进而建立以NDVI指数估计土壤重金属潜在生态风险,并以土壤养分、酸碱性、化学类型等属性指数进行修正的遥感监测模型。以第一次地理国情常普查数据代入模型,结果表明,研究区近十年土壤重金属潜在生态风险整体降低,但小城市和农村局部有新增趋势。检验证明模型可信度较高。
Based on the correlation analysis of ecological geochemistry surveying data and remote-sensing reaches of Xiangjiang River Basin, metal element content and surface the paper discuss spectral curve,and metal potential ecological risk with NDVI nutrient, acid alkali, and chemical type. Wit soil chemical composition and the the remote sensing monitoring model whic index and could be corrected according to the attribute h the first national geographical conditions census data, t betw data in lower een the heavy h estimated t indexes inclu he paper sho he soil heavy ding the soil wed soil heavy metal potential ecological risk was low in the study area in the recent decade but grew in towns and rural areas.
出处
《遥感信息》
CSCD
北大核心
2016年第6期36-43,共8页
Remote Sensing Information
基金
湖南省第一次地理国情普查湘江流域地理国情监测项目(2014-8-1)
国家自然科学基金(41361089)
