IDEAS home Printed from https://ideas.repec.org/a/plo/pone00/0089469.html
   My bibliography  Save this article

Biophysical Controls on Light Response of Net CO2 Exchange in a Winter Wheat Field in the North China Plain

Author

Listed:
  • Xiaojuan Tong
  • Jun Li
  • Qiang Yu
  • Zhonghui Lin

Abstract

To investigate the impacts of biophysical factors on light response of net ecosystem exchange (NEE), CO2 flux was measured using the eddy covariance technique in a winter wheat field in the North China Plain from 2003 to 2006. A rectangular hyperbolic function was used to describe NEE light response. Maximum photosynthetic capacity (Pmax) was 46.6±4.0 µmol CO2 m−2 s−1 and initial light use efficiency (α) 0.059±0.006 µmol µmol−1 in April−May, two or three times as high as those in March. Stepwise multiple linear regressions showed that Pmax increased with the increase in leaf area index (LAI), canopy conductance (gc) and air temperature (Ta) but declined with increasing vapor pressure deficit (VPD) (P 25°C or VPD>1.1−1.3 kPa, NEE residual increased with the increase in Ta and VPD (P

Suggested Citation

  • Xiaojuan Tong & Jun Li & Qiang Yu & Zhonghui Lin, 2014. "Biophysical Controls on Light Response of Net CO2 Exchange in a Winter Wheat Field in the North China Plain," PLOS ONE, Public Library of Science, vol. 9(2), pages 1-13, February.
    • Handle: RePEc:plo:pone00:0089469
    DOI: 10.1371/journal.pone.0089469
    as

    Download full text from publisher

    File URL: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0089469
    Download Restriction: no
    File URL: https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0089469&type=printable
    Download Restriction: no
    File URL: https://libkey.io/10.1371/journal.pone.0089469?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:plo:pone00:0089469. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: plosone (email available below). General contact details of provider: https://journals.plos.org/plosone/ .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.