Interpolated precipitation data (first interval) for 120 point locations within limestone cedar glades at Stones River National Battlefield near Murfreesboro, Tennessee
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This dataset contains data collected within limestone cedar glades at Stones River National Battlefield (STRI) near Murfreesboro, Tennessee. This dataset represents interpolated estimates of precipitation (in decimal inches) for 120 quadrat locations (points) within 12 selected cedar glades, for a period of time from 6 days (144 hours) prior to the field visit day up until 3 days (72 hours) prior to the field visit day. At each field visit, precipitation data was collected at four rain gauges installed at STRI. Rain gauge measurements were obtained on the following dates (which correspond to 3 days prior to the fields in the dataset): February 3, 2012; March 2, 2012; March 30, 2012; April 20, 2012; May 22, 2012; June 18, 2012; July 16, 2012; August 20, 2012; September 24, 2012; November 22, 2012, December 14, 2012; January 18, 2013; February 15, 2013; March 16, 2013; April 12, 2013; and May 10, 2013. Points were classified into four groups (identified by the field "Group") and were visited on a rotating sampling schedule, such that each group of points was visited roughly once every four months. ArcGIS version10 software (Esri, Redlands, CA, USA) was used to interpolate a raster surface between these rain gauges so that estimated precipitation values could be assigned to the 120 points used for hydrologic monitoring. First, a raster file was created based on an Inverse Distance Weighted (IDW) algorithm using rain gauge data as inputs, the default output cell size, and the default power of 2. Then, cell values from the interpolated raster were extracted to the 120 hydrologic monitoring points. Missing values (points not measured on a given day) are indicated by the value -99999.Detailed descriptions of experimental design, field data collection procedures, laboratory procedures, and data analysis are presented in Cartwright (2014).References:Cartwright, J. (2014). Soil ecology of a rock outcrop ecosystem: abiotic stresses, soil respiration, and microbial community profiles in limestone cedar glades. Ph.D. dissertation, Tennessee State University.Cofer, M., Walck, J., and Hidayati, S. (2008). Species richness and exotic species invasion in Middle Tennessee cedar glades in relation to abiotic and biotic factors. The Journal of the Torrey Botanical Society, 135(4), 540–553.
本数据集采集自美国田纳西州默弗里斯伯勒附近的斯通河国家战场(Stones River National Battlefield, STRI)内的石灰岩雪松草原生境。本数据集包含12处选定的雪松草原内120个样方点位(监测点)的降水插值估算值,单位为十进制英寸,时间跨度为野外考察日前6天(144小时)至考察日前3天(72小时)。
每次野外考察时,科研人员会在STRI布设的4台雨量计处采集降水数据。本数据集对应的雨量计观测日期(即对应本数据集内野外考察日前3天的日期)如下:2012年2月3日、2012年3月2日、2012年3月30日、2012年4月20日、2012年5月22日、2012年6月18日、2012年7月16日、2012年8月20日、2012年9月24日、2012年11月22日、2012年12月14日、2013年1月18日、2013年2月15日、2013年3月16日、2013年4月12日及2013年5月10日。
所有监测点被划分为4个组(通过字段"Group"标识),并采用轮换采样方案开展野外考察,即每个组的监测点约每4个月被考察一次。
本研究使用ArcGIS 10版本软件(Esri,美国加利福尼亚州雷德兰兹市),以雨量计观测数据为输入,采用默认输出像元大小与默认幂次为2的反距离加权(Inverse Distance Weighted, IDW)算法,生成降水栅格表面,进而为120个水文监测点位分配降水估算值。具体流程为:首先基于反距离加权算法创建栅格文件,随后将插值栅格的像元值提取至120个水文监测点位。
当日未完成测量的点位以-99999作为缺失值标识。实验设计、野外数据采集流程、实验室流程及数据分析的详细说明详见Cartwright(2014)。
参考文献:
1. Cartwright, J. (2014). 石灰岩雪松草原生态系统土壤生态学:非生物胁迫、土壤呼吸及微生物群落特征. 田纳西州立大学博士学位论文.
2. Cofer, M., Walck, J., & Hidayati, S. (2008). 田纳西州中部雪松草原物种丰富度与外来物种入侵及其与非生物和生物因子的关联. 托里植物学会杂志, 135(4), 540–553.
创建时间:
2017-04-13



