LBA-ECO CD-08 叶片碳、氮、叶面积指数和同位素数据,巴西马瑙斯:2001 年

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此星光明 发表于 2025/06/03 11:25:21 2025/06/03
【摘要】 ​LBA-ECO CD-08 Leaf Carbon, Nitrogen, LAI, and Isotope Data, Manaus, Brazil: 2001简介该数据集提供了 2001 年在巴西亚马逊州马瑙斯 ZF2 蓝花楹样带采集的叶片的碳 (C)、氮 (N)、叶面积指数 (LAI) 和碳同位素比值(13C 和 14C)的测量数据。对取自采样枝条的九个不同物种的最嫩和最老叶片的叶尖和...

LBA-ECO CD-08 Leaf Carbon, Nitrogen, LAI, and Isotope Data, Manaus, Brazil: 2001

简介

该数据集提供了 2001 年在巴西亚马逊州马瑙斯 ZF2 蓝花楹样带采集的叶片的碳 (C)、氮 (N)、叶面积指数 (LAI) 和碳同位素比值(13C 和 14C)的测量数据。对取自采样枝条的九个不同物种的最嫩和最老叶片的叶尖和叶柄进行了分析。该数据集包含一个逗号分隔的数据文件 (.csv)。

摘要

Data are provided in one comma-delimited (.csv) file: leaf_isotopes_manaus.csv

All samples were collected on August 8, 2001. Missing data are represented as -9999.

Column Column Heading Units/format Description
1 Site Study site. All samples were taken at the Manaus ZF2 site (Manaus ZF2 transect).
3 Common_name Local name in Portugese
4 Genus Genus of plant sampled
5 Family Scientific family of plant sampled
6 Relative_age_leaf Relative age of leaves based on position on the twig: Young leaves were taken from the tip and old leaves from the position farthest away from the tip
7 Subsample Sample type: both leaf tip (Tip) and petiole (Stem) were sampled
8 Mean_leaf_area cm^2 Leaf area was measured by making photo copies of the leaves, cutting them out, weighing the cut-outs, and converting weight of the paper to area in cm^2
9 Std_dev_leaf_area cm^2 Standard deviation of the leaf area measurements in cm^2
10 Sample_count Number of individual leaves used in calculating average and standard deviation for leaf area
11 N_concentration % Leaf nitrogen concentration measured by dry combustion using a Fisons elemental analyzer according to standard methods
12 C_concentration % Leaf carbon concentration measured by dry combustion using a Fisons elemental analyzer according to standard methods
13 CN_ratio Mass based ratio of carbon to nitrogen concentrations
14 delta_13C per mil delta13C data are reported as [[13C/12C ratio of the sample divided by the 13C/12C of the PeeDee Belemnite standard] -1]*1000
15 Delta_14C per mil Measured using accelerator mass spectrometry with an overall accuracy of +/- 5 per mil. DELTA 14C data are reported as 14C/12C ratio of the sample divided by 0.95 times the 14C/12C of the Oxalic Acid standard
Site (Region) Westernmost Longitude Easternmost Longitude Northernmost Latitude Southernmost Latitude Geodetic Datum
Amazonas (Manaus) - ZF2 km 34 (Amazonas (Manaus)) -60.20910 -60.00000 -2.50000 -2.60900 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="CD08_Leaf_Isotopes_Manaus_1245",
    cloud_hosted=True,
    bounding_box=(-60.21, -2.61, -60.0, -2.5),
    temporal=("2001-08-08", "2001-08-08"),
    count=-1,  # use -1 to return all datasets
    return_gdf=True,
)
gdf.explore()
 
#leafmap.nasa_data_download(results[:5], out_dir="data")


引用

Trumbore, S.E. 2014. LBA-ECO CD-08 Leaf Carbon, Nitrogen, LAI, and Isotope Data, Manaus, Brazil: 2001. Data set. Available on-line [http://daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, USA.

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