LBA-ECO CD-04 Leaf Area Index, km 83 Tower Site, Tapajos National Forest, Brazil
简介
叶面积指数是在巴西帕拉州塔帕若斯国家森林 83 公里处的伐木塔点的一块 18 公顷地块中估算的。该地块毗邻位于巴西帕拉州塔帕若斯国家森林 83 公里处的涡流通量塔。在这块 18 公顷地块中，沿着两条东西向横断面，以 25 米的间隔放置了 30 个枯枝落叶收集器。每两周从收集器中收集枯枝落叶样本，并送回实验室进行分类、风干和称重。使用计算机扫描仪和图像处理软件测定风干叶片子样本的叶面积。然后将子样本放入烤箱烘干，并将风干重量校正为烘干重量。每次采样收集的枯枝落叶面积是使用子样本测得的重量和面积之间的关系计算出来的（Goulden 等人，2004 年）。此数据集有一个逗号分隔的数据文件。
摘要
Data are presented in one comma-delimited ASCII file: File name: CD04_km83_lai_2000-2001.csv
Column Number Column Heading Units/format Description
1 Date yyyy/mm/dd Collection date
2 Day_cum days "Cumulative days since January 1, 2000"
3 Leaf_area cm2 Total area of leaves collected in the litter traps
4 Leaf_area_cum cm2 Sum of leaf area collected from beginning to current date
5 Trap_area cm2 "Total area of litter traps (30 traps multiplied by 10000 cm2 for each trap)"
6 LAI_cum m2/m2 Cumulative leaf area index calculated as the cumulative leaf area divided by the trap area. Area of leaf tissue per unit of surface area in m2/m2
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 83 Logged Forest Tower (Para Western (Santarem)) -54.9707 -54.9707 -3.017 -3.017 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="ABoVE_ASCENDS_XCO2_2050",
cloud_hosted=True,
bounding_box=(-54.97, -3.02, -54.89, -3.02),
temporal=("2000-09-01", "2001-08-31"),
count=-1, # use -1 to return all datasets
return_gdf=True,
)
gdf.explore()
leafmap.nasa_data_download(results[:5], out_dir="data")
引用
Figuera, M., de Sousa, C.A.D., Menton, M., Juarez, R., da Rocha, H.R., Miller, S.D., and Goulden, M.L. 2011.LBA-ECO CD-04 Leaf Area Index, km 83 Tower Site, Tapajos National Forest, Brazil. Data set. Available on-line [http://daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A.
