LBA-ECO CD-10 Coarse Woody Debris Data at km 67 Tower Site, Tapajos National Forest
简介
该数据集包含一个文本文件，报告了位于帕拉西部（圣塔伦）67公里处原始森林塔遗址一片原始高地森林中倒塌粗粒木质残体的属性。该遗址位于巴西中北部的塔帕若斯国家森林内。测量时间跨度为2001年4月至2001年7月。
在塔帕若斯国家森林 67 公里涡流通量塔观测点的一系列生态样地中，测量了立木和倒木粗木质残体（CWD），又称死木块（图 2）。数据集包含不同大小样地测量的不同尺寸等级的残体。尺寸等级分别为：2-10 厘米（64 平方米子样地）、10-30 厘米（1600 平方米子样地）、30 厘米（38400 平方米子样地）、立木（整个 50 米 x 1000 米的横断面）。
摘要
The debris data are reported in one comma separated ASCII text file,km67_CWD_survey_2001.txt.
Columns include:
row.names = unique row identifier
T = transect
Tag = if the piece was tagged, it appears here. Only the largest pieces were tagged.
volume.cm3 = volume calculated from measured dimensions.
decay = estimated decay class, based on Harmon & Sexton (1996):
• Decay class 1 = solid wood, recently fallen, bark and twigs present.v • Decay class 2 = solid wood, significant weathering, branches present.
• Decay class 3 = wood not solid, may be sloughing but nail still must be pounded into tree.
• Decay class 4 = wood sloughing and/or friable, nails may be forcibly pushed into log.
• Decay class 5 = wood friable, barely holding shape; nails may be easily pushed into log.
size = plot size
biomass.keller.g = estimated biomass in Mg C/ha (dry mass) using locally measured densities, as described in Rice et al. 2004.
Missing Value Code is "NA"
Values are Comma Separated
Sample Data Record:
row.names,T,Tag,volume.cm3,decay,size,biomass.keller.g
1,1,NA,154.17352925,3,64,87.8789116725
2,1,NA,57.3601974166667,5,64,14.9136513283333
3,1,NA,2389.20013893333,4.5,64,621.192036122667
4,1,NA,79.5345868333333,4,64,37.3812558116667
5,1,NA,408.559067115,5,64,106.2253574499
...
1365,1,67,2614398.29430932,2,197500,1856222.78895961
1366,1,49,74952.7169684244,2,197500,53216.4290475813
1367,1,513,128266.375254132,2,197500,91069.1264304335
1368,1,109,110657.36409693,4,197500,52008.9611255569
1369,1,65,513494.012481363,3,197500,292691.587114377
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
!pip install leafmap
!pip install pandas
!pip install folium
!pip install matplotlib
!pip install mapclassify
import pandas as pd
import leafmap
url = "https://github.com/opengeos/NASA-Earth-Data"
df = pd.read_csv(url, sep="\t")
df
leafmap.nasa_data_login()
results, gdf = leafmap.nasa_data_search(
short_name="CD10_CWD_Tapajos_858",
cloud_hosted=True,
bounding_box=(-55.21, -4.05, -54.91, -2.84),
temporal=("2001-04-15", "2001-07-15"),
count=-1, # use -1 to return all datasets
return_gdf=True,
)
gdf.explore()
leafmap.nasa_data_download(results[:5], out_dir="data")
引用
Wofsy, S. C., A. H. Rice, S. R. Saleska, E. H. Pyle, and L. R. Hutyra. 2008. LBA-ECO CD-10 Coarse Woody Debris Data at 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.
