Skip to content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content


Metadata Updated: July 8, 2021

A 2D mechanistic model of CO2 and water vapor movement in a leaf and photosynthesis. Predicting crop production in current and future environmental conditions, and studying the mechanisms of photosynthesis demand a more comprehensive leaf gas exchange model than the empirical models that are currently in use. The 2DLEAF model includes (1) two-dimensional CO2, O2, and water vapor diffusion in the intercellular space schematized according to leaf anatomy, (2) CO2 assimilation by mesophyll cells, and (3) stomatal movements as a regulating factor. The model was used in (1) studies of the effect of leaf anatomy (stomatal aperture, stomatal density, internal leaf structure) on photosynthesis and transpiration of soybean, tomato, cotton, tobacco, and 37 wild plants, (2) estimation of the leaf gas exchange components (diffusion and assimilation) for wild-type and transgenic tobacco leaves, (3) analysis of the leaf gas exchange of eight genotypes of Pima cotton.

Access & Use Information

Public: This dataset is intended for public access and use. License: Creative Commons CCZero

Downloads & Resources


Metadata Created Date November 10, 2020
Metadata Updated Date July 8, 2021

Metadata Source

Harvested from USDA JSON

Additional Metadata

Resource Type Dataset
Metadata Created Date November 10, 2020
Metadata Updated Date July 8, 2021
Publisher Agricultural Research Service
Identifier 1bbe13f7-e2b7-4e3b-922b-f55e70f2ef37
Data Last Modified 2021-05-21
Public Access Level public
Bureau Code 005:18
Metadata Context
Schema Version
Catalog Describedby
Harvest Object Id e95bd065-0146-4ce9-9d6a-deddcda85809
Harvest Source Id d3fafa34-0cb9-48f1-ab1d-5b5fdc783806
Harvest Source Title USDA JSON
Program Code 005:040
Source Datajson Identifier True
Source Hash f1163b9411ae2b1bdc513e7795d8096bb2f95950
Source Schema Version 1.1

Didn't find what you're looking for? Suggest a dataset here.

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?