塔帕若斯国家森林 KM 67 塔楼遗址 LBA-ECO CD-10 森林凋落物数据
LBA-ECO CD-10 Forest Litter Data for km 67 Tower Site, Tapajos National Forest
简介
该数据集包含一个文本文件,报告了帕拉西部(圣塔伦)地区67公里原始森林塔点原始高地森林的凋落物类型和质量。该地点位于巴西中北部的塔帕若斯国家森林。测量时间跨度为2000年7月至2005年6月。
凋落物收集工作于 2000 年 7 月开始,使用 40 个圆形网状筛网陷阱(直径 0.43 米,面积 0.156 平方米)随机放置在 19.75 公顷的树木调查区域内(Rice 等人,2004)。大约每 14 天收集一次凋落物,进行分类,在 60 摄氏度的烘干机中烘干,然后称重。每个陷阱中的凋落物被分类为:(1) 树叶;(2) 果实和花朵;(3) 木材(直径<2厘米)和(4) 杂物。报告的数据值为对凋落物各组分进行40次质量测量的平均值和标准误差,以及总质量的平均值和标准误差,已转换为毫克/公顷/年的报告单位。
摘要
Data File Documentation:
Column = Description ldate = collection date (yyyymmdd) jd = julian date of collection (1 = 1/1/2000) dT = delta-T, time since last collection (in days) leaf = leaf litter mass (Mg/ha/yr) leaf.se = standard error on leaf litter mass measurement fruit = fruit litter mass (Mg/ha/yr) fruit.se = standard error on fruit litter mass measurement wood = woody litter mass (< 2 cm) (Mg/ha/yr) wood.se = standard error on wood litter mass measurement misc = misc other litter mass (Mg/ha/yr) misc.se = standard error on misc other litter mass measurement total = total all categories (Mg/ha/yr) total.se = standard error on total litter mass measurement Missing value code is "NA" Values are comma separated |
Sample Data Record:
All of the litter data are reported in lba_km67_litter_archive.txt
YYYYMMDD,cont.DOY,dT,leaf,leaf.se,fruit,fruit.se,wood,wood.se,misc,misc.se,total,total.se 20000714,196,14,6.58,0.7,0,NA,2.31,0.72,0.79,0.3,9.68,1.01 20000728,210,14,8.32,0.77,0.09,0.03,2.22,0.47,1.63,0.71,12.27,1.39 20000811,224,14,9.76,0.83,0.09,0.05,1.78,0.42,1.44,0.36,13.21,1.41 20000825,238,14,11.53,1.21,0.05,0.03,2.57,0.54,1.96,0.57,16.14,1.7 ... 20050430,1947,14,5.6,0.46,0.67,0.2,1.88,0.35,0.44,0.08,9.5,1.1 20050514,1961,14,7.29,0.89,1.86,0.47,2.8,0.56,1.14,0.16,13.13,1.35 20050527,1974,13,8.77,0.72,1.77,0.42,2.93,0.6,1.73,0.46,15.23,1.5 20050611,1989,15,6.29,0.75,0.57,0.19,1.55,0.34,0.58,0.13,9.57,1.24 |
Site boundaries: (All latitude and longitude given in degrees and fractions)
Site (Region) | Westernmost Longitude | Easternmost Longitude | Northernmost Latitude | Southernmost Latitude | Geodetic Datum |
---|---|---|---|---|---|
Para Western (Santarem)- km 67 Primary Forest Tower Site (Para Western(Santarem)) | -54.959 | -54.959 | -2.857 | -2.857 | World Geodetic System, 1984(WGS-84) |
代码
引用
Rice, A.H., E. P. Hammond, S. R. Saleska, L. Hutyra, M. Palace, M. Keller, P. B. de Carmargo, K. Portilho, D. Marques and S. C. Wofsy. 2008. LBA-ECO CD-10 Forest Litter Data for km 67 Tower Site, Tapajos National Forest. Data set. Available on-line [http://daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A.
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