LBA-ECO CD-15 LAI and Productivity Data, km 67, Tapajos National Forest: 2003-2004

简介
该数据集提供了在巴西帕拉州塔帕若斯国家森林 67 公里研究点采集的样本的平均叶面积指数 (LAI)、树木测量带测量值和凋落物质量。凋落物收集时间为 2004 年 1 月 23 日至 2004 年 12 月 3 日；树木测量仪测量时间为 2003 年 12 月至 2004 年 12 月期间每月一次；LAI 测量时间为 2004 年 1 月 26 日至 2004 年 11 月 3 日。

所有测量均在塔帕若斯国家森林 67 公里处的站点进行。该站点位于巴西帕拉州贝尔特拉市亚马逊原始热带森林区内。森林主要为常绿树，也有少数落叶树种。树冠特点是高达 55 米的大型挺水乔木，约 40 米处为闭合树冠；除了狩猎小径外，几乎没有近期人为干扰的迹象。沿站点的 4 条横断面设立了 50 个测量样地，每个样地内设立了 5 个子样地。最长的横断面（25 米 x 500 米）包含 20 个（25 米 x 25 米）样地。另外 3 条横断面（25 米 x 250 米）每个横断面包含 10 个样地。请注意，未提供样地到横断面的分配。

摘要
File 1. CD15_Litterfall_2004.csv. Measurements were made from January 23, 2004 through December 3, 2004.

Column Variable Units/format Description
1 Sample_date YYYYMMDD Sample Date
2 Plot
Plot identification: each 25 x 25 m plot was given a unique identification number: 1-50
3 Subplot
Subplot identification: each plot was divided into 5 subplots
4 Mass_litterfall g Weight of dry leaves in grams (g) per litter basket: each litter basket had a surface area of 0.25 meters squared

Example data records:

Sample_date,Plot,Subplot,Mass_litterfall
20040123,1,1,6.8
20040223,1,1,5.6
...
20040426,26,2,6.8
20040524,26,2,3.7
...
20041126,50,5,7.2
20041203,50,5,8.1

File 2. CD15_LAI_2004.csv. Measurements were made from January 26, 2004 through November 3, 2004.

Column Variable Units/format Description
1 Plot
Plot identification: each 25 x 25 m plot was given a unique identification number: 1-50
2 Year YYYY Year of sampling
3 Month MMM Month in which measurements were made
4 Day dd Day of the month on which measurements were made
5 N
Number of point measurements (one per subplot) used in plot average
6 LAI m2 per m2 Mean leaf area index measured with a LI-COR LAI 2000 and reported in meters squared per meter squared
7 lai_se m2 per m2 Standard error of the leaf area index reported in meter squared per meter squared
8 fpar
Mean fraction of absorbed photosythetic active radiation (fpar) calculated using the 'difn' output from the LAI 2000
8 fpar_se
Standard error of the mean fpar value

Example data records:

Plot,Year,Month,Day,N,LAI,lai_se,fpar,fpar_se
1,2004,JAN,26,5,6.53,0.21,0.99,0
2,2004,JAN,26,5,6.27,0.14,1,0
...
50,2004,MAY,24,5,5.306,0.229,0.988,0.002
1,2004,JUN,25,5,6.448,0.199,0.994,0.002
...
49,2004,NOV,3,5,5.362,0.533,0.97,0.01
50,2004,NOV,3,5,5.526,0.415,0.986,0.003

File #3: CD15_Dendrometer_measurements_2003_2004.csv. Measurements were made from December 2003 through November 2004.

Column Variable Units/format Description
1 Plot
Plot identification: each 25 x 25 m plot was given a unique identification number
2 Subplot
Subplot identification: each plot was divided into 5 subplots
3 Tree_no
Tree identification
4 Diameter cm Diameter at breast height at the beginning of the study
5 Band_122003 mm Dendrometer band measurement in December 2003 reported in millimeters (mm)
6 Band_012004 mm Dendrometer band measurement in January 2004 reported in millimeters (mm)
7 Band_022004 mm Dendrometer band measurement in February 2004 reported in millimeters (mm)
8 Band_032004 mm Dendrometer band measurement in March 2004 reported in millimeters (mm)
9 Band_042004 mm Dendrometer band measurement in April 2004 reported in millimeters (mm)
10 Band_052004 mm Dendrometer band measurement in May 2004 reported in millimeters (mm)
11 Band_062004 mm Dendrometer band measurement in June 2004 reported in millimeters (mm)
12 Band_072004 mm Dendrometer band measurement in July 2004 reported in millimeters (mm)
13 Band_082004 mm Dendrometer band measurement in August 2004 reported in millimeters (mm)
14 Band_102004 mm Dendrometer band measurement in October 2004 reported in millimeters (mm)
15 Band_112004 mm Dendrometer band measurement in November 2004 reported in millimeters (mm) file
16 Band_final mm Final dendrometer band measurement done on November 30 or December 1 or December 3 2004 reported in millimeters (mm)
17 Comments
Notations from the field notebooks
missing data are represented by -9999

Example data records:

Plot,Subplot,Tree_no,Diameter ,Band_122003,Band_012004,Band_022004,Band_032004,
Band_042004,Band_052004,Band_062004,Band_072004,Band_082004,Band_102004,Band_112004,Band_final,Comments
1,1,1,80.5,-9999,37.2,-9999,-9999,
-9999,-9999,-9999,-9999,-9999,-9999,-9999,48.4,ladder
1,1,2,63.9,11.6,12.3,12.2,12.4,
12.7,12.5,12.5,10.2,12.7,12.6,12.7,13.2,-9999
...
25,2,636,-9999,-9999,-9999,-9999,-9999,
-9999,-9999,-9999,-9999,-9999,-9999,-9999,-9999,-9999
25,3,640,23.1,20.4,20.7,21.1,20.4,
21.4,21.4,21.3,21.3,21.5,21.5,22.2,20,-9999
...
50,5,783,18.6,33.5,32.2,34.2,33.3,
34.8,34.8,35.9,35.9,36.2,37,35.2,35.8,-9999
50,5,784,51.2,-9999,37,44.1,48.5,
53.7,56.8,59.2,59.3,60.4,64.9,70,78.7,-9999

File 4: CD15_dendrometry_dates.csv

This file contains the dates the dendrometry measurements reported in file 3, CD15_Dendrometer_measurements_2003_2004.csv, were taken in each plot, for measurements one through 11, and the final measurement date (YYYYMMDD).

Example data records:

Plot,First_measurement_date,Second_measurement_date,Third_measurement_date,Fourth_measurement_date,
Fifth_measurement_date,Sixth_measurement_date,Seventh_measurement_date,Eighth_measurement_date,
Ninth_measurement_date,Tenth_measurement_date,Eleventh_measurement_date,Final_measurement_date
1,20031210,20040126,20040226,
20040323,20040427,20040525,20040626,
20040726,20040825,20041004,20041103,20041130

2,20031210,20040126,20040226,
20040323,20040427,20040525,20040626,
20040726,20040825,20041004,20041103,20041130

...
49,20031222,20040127,20040226,
20040323,20040427,20040524,20040626,
20040726,20040826,20040906,20041101,20041130

50,20031222,20040127,20040226,
20040323,20040427,20040524,20040626,
20040726,20040826,20040906,20041101,20041130

Site boundaries: (All latitude and longitude given in decimal degrees)

Site (Region) Westernmost Longitude Easternmost Longitude Northernmost Latitude Southernmost Latitude Geodetic Datum
Para Western (Santarem) - km 67 Primary Forest Tower Site (Para Western (Santarem)) -54.95900 -54.95900 -2.85700 -2.85700 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 pdimport 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="ABoVE_ASCENDS_XCO2_2050",
cloud_hosted=True,
bounding_box=(-165.68, 34.59, -98.1, 71.28),
temporal=("2017-07-20", "2017-08-08"),
count=-1, # use -1 to return all datasets
return_gdf=True,
)

gdf.explore()

leafmap.nasa_data_download(results[:5], out_dir="data")

引用
Costa, M.H. and W. Cohen. 2013. LBA-ECO CD-15 LAI and Productivity Data, km 67, Tapajos National Forest: 2003-2004. Data set. Available on-line [http://daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A.