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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ftdoajarticles:oai:doaj.org/article:6a7e94949e154564bf46785f0f88a155 2024-09-15T18:30:05+00:00 A Study of Fitting a Swamp Meadow Ecosystem Evapotranspiration to a Model Based on the Penman-Monteith Equation Feng Li Bin Wang 2015-01-01T00:00:00Z https://doi.org/10.1155/2015/315708 https://doaj.org/article/6a7e94949e154564bf46785f0f88a155 EN eng Wiley http://dx.doi.org/10.1155/2015/315708 https://doaj.org/toc/2090-9063 https://doaj.org/toc/2090-9071 2090-9063 2090-9071 doi:10.1155/2015/315708 https://doaj.org/article/6a7e94949e154564bf46785f0f88a155 Journal of Chemistry, Vol 2015 (2015) Chemistry QD1-999 article 2015 ftdoajarticles https://doi.org/10.1155/2015/315708 2024-08-05T17:48:38Z 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. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Journal of Chemistry 2015 1 8 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Chemistry QD1-999 |
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Chemistry QD1-999 Feng Li Bin Wang A Study of Fitting a Swamp Meadow Ecosystem Evapotranspiration to a Model Based on the Penman-Monteith Equation |
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Chemistry QD1-999 |
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 in Journal/Newspaper |
author |
Feng Li Bin Wang |
author_facet |
Feng Li Bin Wang |
author_sort |
Feng Li |
title |
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_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_sort |
study of fitting a swamp meadow ecosystem evapotranspiration to a model based on the penman-monteith equation |
publisher |
Wiley |
publishDate |
2015 |
url |
https://doi.org/10.1155/2015/315708 https://doaj.org/article/6a7e94949e154564bf46785f0f88a155 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Journal of Chemistry, Vol 2015 (2015) |
op_relation |
http://dx.doi.org/10.1155/2015/315708 https://doaj.org/toc/2090-9063 https://doaj.org/toc/2090-9071 2090-9063 2090-9071 doi:10.1155/2015/315708 https://doaj.org/article/6a7e94949e154564bf46785f0f88a155 |
op_doi |
https://doi.org/10.1155/2015/315708 |
container_title |
Journal of Chemistry |
container_volume |
2015 |
container_start_page |
1 |
op_container_end_page |
8 |
_version_ |
1810471568920281088 |