In this paper, the evapotranspiration balance of forest and grass vegetation in the Loess Plateau of Northwest China in different regions was analyzed using 6 indexes in 3 categoriess, namely, evapotranspiration ratio (Ea/Q, Ep/Q), evapotranspiration difference (Q-EA, Q-EP), and actual (potential) water supply ratio (1-Ea/Q, 1-Ep/Q). It is used to objectively reflect the suitability of different types of vegetation in different periods of growth based on precipitation. In another words this suitability reflects the support capacity of natural rainfall to vegetation consumed water through evapotranspiration under the specific climate environment of the Loess Plateau. The results show that: (1) The actual evapotranspiration water consumption of all types of vegetation in this region increased significantly in the first three months of the growth period from April to June, resulting in a relatively high moisture dryness index of vegetation with an average k value of 0.44. The main reason was that natural precipitation was less at this stage, and the gradually rising temperature strengthened the transpiration of most vegetation. The forest was the most stressed. At the end of May and the beginning of June, with the increase of natural precipitation, the average k value of all types of vegetation began to decline. From July to September, due to the flood season in this region, the precipitation increased sharply, and the moisture dryness index was in the lowest range of the whole growth period, and the average k value varied between 0.26 and 0.30 with the lowest value was 0.26 at the end of August and the beginning of September. (2) It is obvious that the water stress of forest is higher than that of shrub and grassland. It is fully indicated that the difference of transpiration caused by the difference of vegetation types leads to the difference of actual evapotranspiration water consumption of different vegetation types.
| Published in | Journal of Energy and Natural Resources (Volume 13, Issue 1) |
| DOI | 10.11648/j.jenr.20241301.13 |
| Page(s) | 27-49 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Forest and Grass Vegetation, Precipitation, Evapotranspiration, Response, Loess Plateau
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APA Style
Fu, W., Yan, S. X., Qian, H., Qiang, Z., He, Z., et al. (2024). Study on Response of Evapotranspiration Consumption of Forest and Grass Vegetation to Natural Precipitation in Northwest Loess Plateau. Journal of Energy and Natural Resources, 13(1), 27-49. https://doi.org/10.11648/j.jenr.20241301.13
ACS Style
Fu, W.; Yan, S. X.; Qian, H.; Qiang, Z.; He, Z., et al. Study on Response of Evapotranspiration Consumption of Forest and Grass Vegetation to Natural Precipitation in Northwest Loess Plateau. J. Energy Nat. Resour. 2024, 13(1), 27-49. doi: 10.11648/j.jenr.20241301.13
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Download@article{10.11648/j.jenr.20241301.13,
author = {Wang Fu and Sha Xiao Yan and He Qian and Zhao Qiang and Zhang He and Han Fen},
title = {Study on Response of Evapotranspiration Consumption of Forest and Grass Vegetation to Natural Precipitation in Northwest Loess Plateau
},
journal = {Journal of Energy and Natural Resources},
volume = {13},
number = {1},
pages = {27-49},
doi = {10.11648/j.jenr.20241301.13},
url = {https://doi.org/10.11648/j.jenr.20241301.13},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jenr.20241301.13},
abstract = {In this paper, the evapotranspiration balance of forest and grass vegetation in the Loess Plateau of Northwest China in different regions was analyzed using 6 indexes in 3 categoriess, namely, evapotranspiration ratio (Ea/Q, Ep/Q), evapotranspiration difference (Q-EA, Q-EP), and actual (potential) water supply ratio (1-Ea/Q, 1-Ep/Q). It is used to objectively reflect the suitability of different types of vegetation in different periods of growth based on precipitation. In another words this suitability reflects the support capacity of natural rainfall to vegetation consumed water through evapotranspiration under the specific climate environment of the Loess Plateau. The results show that: (1) The actual evapotranspiration water consumption of all types of vegetation in this region increased significantly in the first three months of the growth period from April to June, resulting in a relatively high moisture dryness index of vegetation with an average k value of 0.44. The main reason was that natural precipitation was less at this stage, and the gradually rising temperature strengthened the transpiration of most vegetation. The forest was the most stressed. At the end of May and the beginning of June, with the increase of natural precipitation, the average k value of all types of vegetation began to decline. From July to September, due to the flood season in this region, the precipitation increased sharply, and the moisture dryness index was in the lowest range of the whole growth period, and the average k value varied between 0.26 and 0.30 with the lowest value was 0.26 at the end of August and the beginning of September. (2) It is obvious that the water stress of forest is higher than that of shrub and grassland. It is fully indicated that the difference of transpiration caused by the difference of vegetation types leads to the difference of actual evapotranspiration water consumption of different vegetation types.
},
year = {2024}
}
TY - JOUR T1 - Study on Response of Evapotranspiration Consumption of Forest and Grass Vegetation to Natural Precipitation in Northwest Loess Plateau AU - Wang Fu AU - Sha Xiao Yan AU - He Qian AU - Zhao Qiang AU - Zhang He AU - Han Fen Y1 - 2024/05/10 PY - 2024 N1 - https://doi.org/10.11648/j.jenr.20241301.13 DO - 10.11648/j.jenr.20241301.13 T2 - Journal of Energy and Natural Resources JF - Journal of Energy and Natural Resources JO - Journal of Energy and Natural Resources SP - 27 EP - 49 PB - Science Publishing Group SN - 2330-7404 UR - https://doi.org/10.11648/j.jenr.20241301.13 AB - In this paper, the evapotranspiration balance of forest and grass vegetation in the Loess Plateau of Northwest China in different regions was analyzed using 6 indexes in 3 categoriess, namely, evapotranspiration ratio (Ea/Q, Ep/Q), evapotranspiration difference (Q-EA, Q-EP), and actual (potential) water supply ratio (1-Ea/Q, 1-Ep/Q). It is used to objectively reflect the suitability of different types of vegetation in different periods of growth based on precipitation. In another words this suitability reflects the support capacity of natural rainfall to vegetation consumed water through evapotranspiration under the specific climate environment of the Loess Plateau. The results show that: (1) The actual evapotranspiration water consumption of all types of vegetation in this region increased significantly in the first three months of the growth period from April to June, resulting in a relatively high moisture dryness index of vegetation with an average k value of 0.44. The main reason was that natural precipitation was less at this stage, and the gradually rising temperature strengthened the transpiration of most vegetation. The forest was the most stressed. At the end of May and the beginning of June, with the increase of natural precipitation, the average k value of all types of vegetation began to decline. From July to September, due to the flood season in this region, the precipitation increased sharply, and the moisture dryness index was in the lowest range of the whole growth period, and the average k value varied between 0.26 and 0.30 with the lowest value was 0.26 at the end of August and the beginning of September. (2) It is obvious that the water stress of forest is higher than that of shrub and grassland. It is fully indicated that the difference of transpiration caused by the difference of vegetation types leads to the difference of actual evapotranspiration water consumption of different vegetation types. VL - 13 IS - 1 ER -
Ecological Technology Center, Pingliang Institute of Soil and Water Conservation, Pingliang, China
Ecological Technology Center, Pingliang Institute of Soil and Water Conservation, Pingliang, China
Ecological Technology Center, Pingliang Institute of Soil and Water Conservation, Pingliang, China
Ecological Technology Center, Pingliang Institute of Soil and Water Conservation, Pingliang, China
Ecological Technology Center, Pingliang Institute of Soil and Water Conservation, Pingliang, China
Ecological Technology Center, Pingliang Institute of Soil and Water Conservation, Pingliang, China
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