LBA-ECO ND-11 STREAM CARBON AND NUTRIENTS, MATO GROSSO, BRAZIL: 2003-2006

This data set contains baseflow streamwater concentrations of pH, specific conductivity, base cations, carbon (dissolved organic carbon (DOC), particulate organic carbon (POC) and bicarbonate alkalinity) and silica for four headwater streams in the seasonally dry Amazon (Johnson et al. (2006a) and Johnson et al. (2006b). Data are provided in one comma-separated ASCII file.

This?hydrologic study of four headwater watersheds was conducted in an undisturbed forest near Juruena, Mato Grosso in the seasonally dry, southern Amazon. The small catchments range in size from 0.85 to 1.9 ha. Stream water samples were collected weekly during rainy seasons and biweekly during the dry seasons. Baseflow stream water concentrations of base cations, silica, electrical conductivity, DOC, and alkalinity varied inversely with discharge. While there was variation among the watersheds, the concentration-discharge patterns were consistent for each of the four watersheds. Baseflow discharge data are not included in this data set and will be archived separately.

本数据集包含季节性干旱亚马逊地区4条源头溪流的基流（baseflow）河水浓度数据，涵盖的指标包括pH、比电导率（specific conductivity）、基础阳离子（base cations）、碳类组分（溶解有机碳（DOC）、颗粒有机碳（POC）及碳酸氢盐碱度（bicarbonate alkalinity））与二氧化硅（silica），相关研究详见Johnson等人2006a及2006b的文献。数据集以单个逗号分隔ASCII文件形式提供。
本项针对4个源头流域的水文研究，开展于巴西马托格罗索州茹鲁埃纳附近的未受干扰原生林内，区域地处南部季节性干旱的亚马逊地带。小型集水区的面积介于0.85至1.9公顷之间。雨季每周采集一次河水样品，旱季则每两周采集一次。基流河水的基础阳离子、二氧化硅、电导率、DOC及碱度浓度与流量呈负相关关系。尽管各流域间存在一定差异，但4个流域的浓度-流量变化模式均保持一致。本数据集未包含基流流量数据，相关数据将另行归档。