Please use this identifier to cite or link to this item:
http://nopr.niscpr.res.in/handle/123456789/34534Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Wang, Bin | - |
| dc.contributor.author | Li, Jie | - |
| dc.contributor.author | Song, Gu | - |
| dc.date.accessioned | 2016-06-28T09:24:00Z | - |
| dc.date.available | 2016-06-28T09:24:00Z | - |
| dc.date.issued | 2014-10 | - |
| dc.identifier.issn | 0975-1033 (Online); 0379-5136 (Print) | - |
| dc.identifier.uri | http://hdl.handle.net/123456789/34534 | - |
| dc.description | 1820-1831 | en_US |
| dc.description.abstract | We examined the net ecosystem CO2 exchange (NEE) in an Elymus nutans artificial pasture in the Three-River Source Region of the Qinghai-Tibetan Plateau from January 1, 2008 to December 31, 2008 using the eddy covariance method. The hourly minimum NEE rate was −7.89 μmol CO2 m−2 s−1. The hourly maximum ecosystem respiration (Re) in the pasture was 5.03 µmol CO2 m−2 s−1. The annual sum of the NEE in the pasture was 140.01 g C m−2 year−1. For the entire growing period, the apparent quantum yield (α) was −0.0275 µmol µmol−1, and the α values for the pasture’s light response curve varied with the canopy development, the air temperature (Ta), the soil water content (SWC), and the vapor pressure deficit (VPD). Piecewise regression results indicated that the optimum Ta and VPD for the daytime NEE were 14.1°C and 0.65 kPa, respectively. During the entire growing period, the daytime NEE decreased as the SWC increased, and the apparent temperature sensitivity of respiration (Q10) in the pasture ecosystem was 3.0 and was obviously controlled by the SWC conditions. The results of linear regression analysis suggested that approximately 32.5% of the variation in the daily NEE can be explained by variation in the leaf area index. | en_US |
| dc.language.iso | en_US | en_US |
| dc.publisher | NISCAIR-CSIR, India | en_US |
| dc.rights |  CC Attribution-Noncommercial-No Derivative Works 2.5 India | en_US |
| dc.source | IJMS Vol.43(10) [October 2014] | en_US |
| dc.subject | Net ecosystem CO2 exchange | en_US |
| dc.subject | Ecosystem respiration | en_US |
| dc.subject | Artificial pasture | en_US |
| dc.subject | Eddy covariance | en_US |
| dc.subject | The Three-River Source Region | en_US |
| dc.title | Biophysical regulation of the net ecosystem CO2 exchange over an Elymus nutans artificial pasture in the Three-River Source Region of the Qinghai-Tibetan Plateau | en_US |
| dc.type | Article | en_US |
| Appears in Collections: | IJMS Vol.43(10) [October 2014] | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJMS 43(10) 1820-1831.pdf | 648.5 kB | Adobe PDF | View/Open |
Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.