Data Set Citation:
When using this data, please cite the data package:
NCEAS 10645: Zhuang: Toward an adequate quantification of CH4 emissions from land ecosystems: Integrating field and in-situ observations, satellite data, and modeling , National Center for Ecological Analysis and Synthesis , and Khalil A. 2008.
Methane emissions from rice fields at Tuzu, Sichuan Prov., China
nceas.884.3 (https://knb.ecoinformatics.org:443/knb/metacat/nceas.884.3/nceas)
General Information:
Title:Methane emissions from rice fields at Tuzu, Sichuan Prov., China
Identifier:nceas.884
Alternate Identifier:Methane emissions from rice fields at Tuzu, Sichuan Prov., China
Abstract:
The data is the result of a 7-year study of methane emissions from rice fields in the Sichuan Province of China. In this region, there is one crop of rice per year, the fields are continuously flooded from transplanting to harvest, and there is heavy use of organic fertilizers, particularly pig manure. The fields were studied under prevailing agricultural practices of the local farmers. The results represent emissions under standard agricultural practices and the year to year variability of climate, fertilizers, available irrigation water, and cultivars. The sample site was located near the village of Tuzu (29.5 degrees N latitude, 106.7 degrees E longitude), about 20 km east of Leshan City, and 100 km south of Chengdu. Data are documented in: Khalil, M.A.K., R.A. Rasmussen, M.J. Shearer, R.W. Dalluge, L.X. Ren, and C.L. Duan (1998), Measurements of methane emissions from rice fields in China, J. Geophys. Res. 103(D19) 25,181-25,210.
Keywords:None:
  • Methane
Publication Date:2008-02-29
Data Table, Image, and Other Data Details:
Metadata download: Ecological Metadata Language (EML) File
Other Data:MASTER DATA SET FROM TUZU - SICHUAN, CHINA ( View Metadata | Download File download)

Involved Parties

Data Set Creators:
Organization:NCEAS 10645: Zhuang: Toward an adequate quantification of CH4 emissions from land ecosystems: Integrating field and in-situ observations, satellite data, and modeling
Organization:National Center for Ecological Analysis and Synthesis
Individual: Aslam Khalil
Organization:Portland State University
Address:
Portland, Oregon 97207-0751 USA
Phone:
1-503-725-8396 (voice)
Email Address:
khalilm@pdx.edu
Data Set Contacts:
Individual: Aslam Khalil
Organization:Portland State University
Address:
Portland, Oregon 97207-0751 USA
Phone:
1-503-725-8396 (voice)
Email Address:
khalilm@pdx.edu
Associated Parties:
Individual: Aslam Khalil
Individual: Reinhold Rasmussen
Metadata Providers:
Individual: Aslam Khalil

Data Set Characteristics

Geographic Region:
Geographic Description:Tuzu, Sichuan Province, China
Bounding Coordinates:
West:  106.7000  degrees
East:  106.7000  degrees
North:  29.5000  degrees
South:  29.5000  degrees
Time Period:
Begin:
1988-04-22
End:
1994-08-16

Sampling, Processing and Quality Control Methods

Step by Step Procedures
Step 1:  
Description:

Chamber sampling

Wooden boardwalks are installed at the edge of the rice field when the fields are prepared for planting. In this study, an aluminum frame was installed in the soil at the end of the boardwalk. The frame had a low center that could be filled with water for an air-tight seal. A rigid translucent polyethylene chamber, equipped with a sample port, is placed on the frame after the rice has been transplanted and the field is flooded. Four air samples are taken every 3 minutes, so the chamber is on the base and covering the plants for about 12 minutes. The air samples were measured by GC FID.

Sampling Area And Frequency:
Sampling was done during the rice growing seasons of 1988-1994 at the sample site, approximately the months of May through August.
Sampling Description:
Sampling took place at four nearby fields near Tuzu village. All four fields were sampled except in 1991. Up to 6 sample plots were established in the fields. Not all plots were measured all years. Samples were taken alternately mornings and afternoons, twice per week for most years.

Data Set Usage Rights

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Access Control:
Auth System:knb
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Metadata download: Ecological Metadata Language (EML) File