Evapotranspiration Characteristics of Forest and Grass Vegetation and Its Response to Environmental Factors on the Loess Plateau

Wang Fu; Sha Xiao Yan; He Qian; Zhao Qiang; Han Fen; Zhang He

doi:doi:10.11648/j.sd.20231106.12

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Evapotranspiration Characteristics of Forest and Grass Vegetation and Its Response to Environmental Factors on the Loess Plateau

Wang Fu, Sha Xiao Yan, He Qian, Zhao Qiang, Han Fen, Zhang He

Published in Science Discovery (Volume 11, Issue 6)

Received: 19 October 2023 Accepted: 6 November 2023 Published: 13 November 2023

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Abstract

In this paper, the evapotranspiration characteristics and water consumption rules of different types of vegetation in tree forest, shrub forest and grassland in the Loess Plateau of Longzhong region were analyzed, and the response relationship between vegetation evapotranspiration and meteorological factors was established by regression analysis method. The results showed that: (1) The monthly variation of Ea values of vegetation in this region showed an obvious inverted U-shaped bimodal variation, which the lowest Ea values were found in the germination stage of vegetation in early April and the dormancy stage of leaf litter in October, and the Ea values increased greatly in May and June with the enhancement of vegetation transpiration and soil evaporation by an average increase of 74.31%. The Ea values of all types of vegetation in this region reached the maximum value in July and August and began to decline significantly from September by an average decrease of 7.42mm and an average decrease of 24.31%. In October, the Ea values of vegetation rapidly decreased to the level of early April by an average decrease of 15.67mm and a decrease of 51.52% compared with August. (2) The difference in the perspective of spatial distribution of evapotranspiration water consumption of vegetation in this region was mainly manifested in the difference between east and west but a little difference between north and south. In Pingliang City, vegetation evapotranspiration water consumption in the east was higher than that in the west, the south was higher than that in the north, and the Jinghe River basin was higher than that in the Hulu River basin. The average difference of the total evapotranspiration water consumption of the same type of vegetation during the growth period was 19.43mm from east to west, 2.2mm from north to south, and 19.43mm from basin to basin. (3) Radiation and precipitation were the main influencing factors of Ea. Among the independent variable factors affecting evapotranspiration of forest and shrub forest, the difference of significance from large to small was the average monthly temperature, average monthly precipitation, average monthly wind speed and average monthly precipitation days. The effect of monthly mean wind speed on grassland Ea was relatively small.

Published in	Science Discovery (Volume 11, Issue 6)
DOI	10.11648/j.sd.20231106.12
Page(s)	189-204
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), 2023. Published by Science Publishing Group

Keywords

Forest and Grass Vegetation, Evapotranspiration, Characteristic of Water Consumption, Response of Environmental Factors, The Loess Plateau, Middle-East of Gansu Province

References

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APA Style

Fu, W., Yan, S. X., Qian, H., Qiang, Z., Fen, H., et al. (2023). Evapotranspiration Characteristics of Forest and Grass Vegetation and Its Response to Environmental Factors on the Loess Plateau. Science Discovery, 11(6), 189-204. https://doi.org/10.11648/j.sd.20231106.12

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ACS Style

Fu, W.; Yan, S. X.; Qian, H.; Qiang, Z.; Fen, H., et al. Evapotranspiration Characteristics of Forest and Grass Vegetation and Its Response to Environmental Factors on the Loess Plateau. Sci. Discov. 2023, 11(6), 189-204. doi: 10.11648/j.sd.20231106.12

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AMA Style

Fu W, Yan SX, Qian H, Qiang Z, Fen H, et al. Evapotranspiration Characteristics of Forest and Grass Vegetation and Its Response to Environmental Factors on the Loess Plateau. Sci Discov. 2023;11(6):189-204. doi: 10.11648/j.sd.20231106.12

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@article{10.11648/j.sd.20231106.12,
  author = {Wang Fu and Sha Xiao Yan and He Qian and Zhao Qiang and Han Fen and Zhang He},
  title = {Evapotranspiration Characteristics of Forest and Grass Vegetation and Its Response to Environmental Factors on the Loess Plateau},
  journal = {Science Discovery},
  volume = {11},
  number = {6},
  pages = {189-204},
  doi = {10.11648/j.sd.20231106.12},
  url = {https://doi.org/10.11648/j.sd.20231106.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20231106.12},
  abstract = {In this paper, the evapotranspiration characteristics and water consumption rules of different types of vegetation in tree forest, shrub forest and grassland in the Loess Plateau of Longzhong region were analyzed, and the response relationship between vegetation evapotranspiration and meteorological factors was established by regression analysis method. The results showed that: (1) The monthly variation of Ea values of vegetation in this region showed an obvious inverted U-shaped bimodal variation, which the lowest Ea values were found in the germination stage of vegetation in early April and the dormancy stage of leaf litter in October, and the Ea values increased greatly in May and June with the enhancement of vegetation transpiration and soil evaporation by an average increase of 74.31%. The Ea values of all types of vegetation in this region reached the maximum value in July and August and began to decline significantly from September by an average decrease of 7.42mm and an average decrease of 24.31%. In October, the Ea values of vegetation rapidly decreased to the level of early April by an average decrease of 15.67mm and a decrease of 51.52% compared with August. (2) The difference in the perspective of spatial distribution of evapotranspiration water consumption of vegetation in this region was mainly manifested in the difference between east and west but a little difference between north and south. In Pingliang City, vegetation evapotranspiration water consumption in the east was higher than that in the west, the south was higher than that in the north, and the Jinghe River basin was higher than that in the Hulu River basin. The average difference of the total evapotranspiration water consumption of the same type of vegetation during the growth period was 19.43mm from east to west, 2.2mm from north to south, and 19.43mm from basin to basin. (3) Radiation and precipitation were the main influencing factors of Ea. Among the independent variable factors affecting evapotranspiration of forest and shrub forest, the difference of significance from large to small was the average monthly temperature, average monthly precipitation, average monthly wind speed and average monthly precipitation days. The effect of monthly mean wind speed on grassland Ea was relatively small.
},
 year = {2023}
}

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TY  - JOUR
T1  - Evapotranspiration Characteristics of Forest and Grass Vegetation and Its Response to Environmental Factors on the Loess Plateau
AU  - Wang Fu
AU  - Sha Xiao Yan
AU  - He Qian
AU  - Zhao Qiang
AU  - Han Fen
AU  - Zhang He
Y1  - 2023/11/13
PY  - 2023
N1  - https://doi.org/10.11648/j.sd.20231106.12
DO  - 10.11648/j.sd.20231106.12
T2  - Science Discovery
JF  - Science Discovery
JO  - Science Discovery
SP  - 189
EP  - 204
PB  - Science Publishing Group
SN  - 2331-0650
UR  - https://doi.org/10.11648/j.sd.20231106.12
AB  - In this paper, the evapotranspiration characteristics and water consumption rules of different types of vegetation in tree forest, shrub forest and grassland in the Loess Plateau of Longzhong region were analyzed, and the response relationship between vegetation evapotranspiration and meteorological factors was established by regression analysis method. The results showed that: (1) The monthly variation of Ea values of vegetation in this region showed an obvious inverted U-shaped bimodal variation, which the lowest Ea values were found in the germination stage of vegetation in early April and the dormancy stage of leaf litter in October, and the Ea values increased greatly in May and June with the enhancement of vegetation transpiration and soil evaporation by an average increase of 74.31%. The Ea values of all types of vegetation in this region reached the maximum value in July and August and began to decline significantly from September by an average decrease of 7.42mm and an average decrease of 24.31%. In October, the Ea values of vegetation rapidly decreased to the level of early April by an average decrease of 15.67mm and a decrease of 51.52% compared with August. (2) The difference in the perspective of spatial distribution of evapotranspiration water consumption of vegetation in this region was mainly manifested in the difference between east and west but a little difference between north and south. In Pingliang City, vegetation evapotranspiration water consumption in the east was higher than that in the west, the south was higher than that in the north, and the Jinghe River basin was higher than that in the Hulu River basin. The average difference of the total evapotranspiration water consumption of the same type of vegetation during the growth period was 19.43mm from east to west, 2.2mm from north to south, and 19.43mm from basin to basin. (3) Radiation and precipitation were the main influencing factors of Ea. Among the independent variable factors affecting evapotranspiration of forest and shrub forest, the difference of significance from large to small was the average monthly temperature, average monthly precipitation, average monthly wind speed and average monthly precipitation days. The effect of monthly mean wind speed on grassland Ea was relatively small.

VL  - 11
IS  - 6
ER  -

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Author Information

Wang Fu

Pingliang Institute of Soil and Water Conservation, Pingliang, China

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Sha Xiao Yan

Pingliang Institute of Soil and Water Conservation, Pingliang, China

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He Qian

Pingliang Institute of Soil and Water Conservation, Pingliang, China

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Zhao Qiang

Pingliang Institute of Soil and Water Conservation, Pingliang, China

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Han Fen

Pingliang Institute of Soil and Water Conservation, Pingliang, China

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Zhang He

Pingliang Institute of Soil and Water Conservation, Pingliang, China

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Plain Text BibTeX RIS

APA Style

Fu, W., Yan, S. X., Qian, H., Qiang, Z., Fen, H., et al. (2023). Evapotranspiration Characteristics of Forest and Grass Vegetation and Its Response to Environmental Factors on the Loess Plateau. Science Discovery, 11(6), 189-204. https://doi.org/10.11648/j.sd.20231106.12

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ACS Style

Fu, W.; Yan, S. X.; Qian, H.; Qiang, Z.; Fen, H., et al. Evapotranspiration Characteristics of Forest and Grass Vegetation and Its Response to Environmental Factors on the Loess Plateau. Sci. Discov. 2023, 11(6), 189-204. doi: 10.11648/j.sd.20231106.12

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AMA Style

Fu W, Yan SX, Qian H, Qiang Z, Fen H, et al. Evapotranspiration Characteristics of Forest and Grass Vegetation and Its Response to Environmental Factors on the Loess Plateau. Sci Discov. 2023;11(6):189-204. doi: 10.11648/j.sd.20231106.12

Copy | Download

@article{10.11648/j.sd.20231106.12,
  author = {Wang Fu and Sha Xiao Yan and He Qian and Zhao Qiang and Han Fen and Zhang He},
  title = {Evapotranspiration Characteristics of Forest and Grass Vegetation and Its Response to Environmental Factors on the Loess Plateau},
  journal = {Science Discovery},
  volume = {11},
  number = {6},
  pages = {189-204},
  doi = {10.11648/j.sd.20231106.12},
  url = {https://doi.org/10.11648/j.sd.20231106.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20231106.12},
  abstract = {In this paper, the evapotranspiration characteristics and water consumption rules of different types of vegetation in tree forest, shrub forest and grassland in the Loess Plateau of Longzhong region were analyzed, and the response relationship between vegetation evapotranspiration and meteorological factors was established by regression analysis method. The results showed that: (1) The monthly variation of Ea values of vegetation in this region showed an obvious inverted U-shaped bimodal variation, which the lowest Ea values were found in the germination stage of vegetation in early April and the dormancy stage of leaf litter in October, and the Ea values increased greatly in May and June with the enhancement of vegetation transpiration and soil evaporation by an average increase of 74.31%. The Ea values of all types of vegetation in this region reached the maximum value in July and August and began to decline significantly from September by an average decrease of 7.42mm and an average decrease of 24.31%. In October, the Ea values of vegetation rapidly decreased to the level of early April by an average decrease of 15.67mm and a decrease of 51.52% compared with August. (2) The difference in the perspective of spatial distribution of evapotranspiration water consumption of vegetation in this region was mainly manifested in the difference between east and west but a little difference between north and south. In Pingliang City, vegetation evapotranspiration water consumption in the east was higher than that in the west, the south was higher than that in the north, and the Jinghe River basin was higher than that in the Hulu River basin. The average difference of the total evapotranspiration water consumption of the same type of vegetation during the growth period was 19.43mm from east to west, 2.2mm from north to south, and 19.43mm from basin to basin. (3) Radiation and precipitation were the main influencing factors of Ea. Among the independent variable factors affecting evapotranspiration of forest and shrub forest, the difference of significance from large to small was the average monthly temperature, average monthly precipitation, average monthly wind speed and average monthly precipitation days. The effect of monthly mean wind speed on grassland Ea was relatively small.
},
 year = {2023}
}

Copy | Download

TY  - JOUR
T1  - Evapotranspiration Characteristics of Forest and Grass Vegetation and Its Response to Environmental Factors on the Loess Plateau
AU  - Wang Fu
AU  - Sha Xiao Yan
AU  - He Qian
AU  - Zhao Qiang
AU  - Han Fen
AU  - Zhang He
Y1  - 2023/11/13
PY  - 2023
N1  - https://doi.org/10.11648/j.sd.20231106.12
DO  - 10.11648/j.sd.20231106.12
T2  - Science Discovery
JF  - Science Discovery
JO  - Science Discovery
SP  - 189
EP  - 204
PB  - Science Publishing Group
SN  - 2331-0650
UR  - https://doi.org/10.11648/j.sd.20231106.12
AB  - In this paper, the evapotranspiration characteristics and water consumption rules of different types of vegetation in tree forest, shrub forest and grassland in the Loess Plateau of Longzhong region were analyzed, and the response relationship between vegetation evapotranspiration and meteorological factors was established by regression analysis method. The results showed that: (1) The monthly variation of Ea values of vegetation in this region showed an obvious inverted U-shaped bimodal variation, which the lowest Ea values were found in the germination stage of vegetation in early April and the dormancy stage of leaf litter in October, and the Ea values increased greatly in May and June with the enhancement of vegetation transpiration and soil evaporation by an average increase of 74.31%. The Ea values of all types of vegetation in this region reached the maximum value in July and August and began to decline significantly from September by an average decrease of 7.42mm and an average decrease of 24.31%. In October, the Ea values of vegetation rapidly decreased to the level of early April by an average decrease of 15.67mm and a decrease of 51.52% compared with August. (2) The difference in the perspective of spatial distribution of evapotranspiration water consumption of vegetation in this region was mainly manifested in the difference between east and west but a little difference between north and south. In Pingliang City, vegetation evapotranspiration water consumption in the east was higher than that in the west, the south was higher than that in the north, and the Jinghe River basin was higher than that in the Hulu River basin. The average difference of the total evapotranspiration water consumption of the same type of vegetation during the growth period was 19.43mm from east to west, 2.2mm from north to south, and 19.43mm from basin to basin. (3) Radiation and precipitation were the main influencing factors of Ea. Among the independent variable factors affecting evapotranspiration of forest and shrub forest, the difference of significance from large to small was the average monthly temperature, average monthly precipitation, average monthly wind speed and average monthly precipitation days. The effect of monthly mean wind speed on grassland Ea was relatively small.

VL  - 11
IS  - 6
ER  -

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