A Study of Fitting a Swamp Meadow Ecosystem Evapotranspiration to a Model Based on the Penman-Monteith Equation
To accurately estimate the magnitude and seasonal dynamics of evapotranspiration (ET) over an important a swamp meadow in the Fenghuoshan permafrost region, we employed the Food and Agriculture Organization- (FAO-) Penman-Monteith (P-M) model. The model was also used to investigate changes in the cr...
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| Language: | English |
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Wiley
2015-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2015/315708 |
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| author | Feng Li Bin Wang |
| author_facet | Feng Li Bin Wang |
| author_sort | Feng Li |
| collection | DOAJ |
| description | To accurately estimate the magnitude and seasonal dynamics of evapotranspiration (ET) over an important a swamp meadow in the Fenghuoshan permafrost region, we employed the Food and Agriculture Organization- (FAO-) Penman-Monteith (P-M) model. The model was also used to investigate changes in the crop coefficient (kc), which was calculated as the ratio of the measured actual ET (ETa from the eddy covariance (EC) system) to the reference ET (ET0 from the P-M model). The results indicated a reference ET of 900 mm/year from the swamp meadow ecosystem, which was significantly higher than the actual ET (426 mm/year). The reference ET peaked from April to July, while the actual ET was primarily in growing season. The value of kc exhibited significant seasonal variations within the range 0.3–1.0 with a mean kc of 0.55 during the growing season. The daily kc showed a linear increase with Rn and Ta and a linear decrease with the VPD. With respect to the biotic factors, the biomass exhibited a significant positive correlation with kc. Thus, a daily kc model is developed as a function of the VPD, Rn, Ta, and biomass. |
| format | Article |
| id | doaj-art-6a7e94949e154564bf46785f0f88a155 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
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| series | Journal of Chemistry |
| spelling | doaj-art-6a7e94949e154564bf46785f0f88a1552025-02-03T01:01:52ZengWileyJournal of Chemistry2090-90632090-90712015-01-01201510.1155/2015/315708315708A Study of Fitting a Swamp Meadow Ecosystem Evapotranspiration to a Model Based on the Penman-Monteith EquationFeng Li0Bin Wang1Management Station of Economic Forestry of Qingyang, 1 West Qingzhou Road, Qingyang 745000, ChinaCollege of Life Science and Agriculture and Forestry, Qiqihar University, 23 Wenhua Road, Qiqihar 161006, ChinaTo accurately estimate the magnitude and seasonal dynamics of evapotranspiration (ET) over an important a swamp meadow in the Fenghuoshan permafrost region, we employed the Food and Agriculture Organization- (FAO-) Penman-Monteith (P-M) model. The model was also used to investigate changes in the crop coefficient (kc), which was calculated as the ratio of the measured actual ET (ETa from the eddy covariance (EC) system) to the reference ET (ET0 from the P-M model). The results indicated a reference ET of 900 mm/year from the swamp meadow ecosystem, which was significantly higher than the actual ET (426 mm/year). The reference ET peaked from April to July, while the actual ET was primarily in growing season. The value of kc exhibited significant seasonal variations within the range 0.3–1.0 with a mean kc of 0.55 during the growing season. The daily kc showed a linear increase with Rn and Ta and a linear decrease with the VPD. With respect to the biotic factors, the biomass exhibited a significant positive correlation with kc. Thus, a daily kc model is developed as a function of the VPD, Rn, Ta, and biomass.http://dx.doi.org/10.1155/2015/315708 |
| spellingShingle | Feng Li Bin Wang A Study of Fitting a Swamp Meadow Ecosystem Evapotranspiration to a Model Based on the Penman-Monteith Equation Journal of Chemistry |
| title | A Study of Fitting a Swamp Meadow Ecosystem Evapotranspiration to a Model Based on the Penman-Monteith Equation |
| title_full | A Study of Fitting a Swamp Meadow Ecosystem Evapotranspiration to a Model Based on the Penman-Monteith Equation |
| title_fullStr | A Study of Fitting a Swamp Meadow Ecosystem Evapotranspiration to a Model Based on the Penman-Monteith Equation |
| title_full_unstemmed | A Study of Fitting a Swamp Meadow Ecosystem Evapotranspiration to a Model Based on the Penman-Monteith Equation |
| title_short | A Study of Fitting a Swamp Meadow Ecosystem Evapotranspiration to a Model Based on the Penman-Monteith Equation |
| title_sort | study of fitting a swamp meadow ecosystem evapotranspiration to a model based on the penman monteith equation |
| url | http://dx.doi.org/10.1155/2015/315708 |
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