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Fractional Linear Regression Equation in Agricultural Disaster Assessment Model Based on Geographic Information System Analysis Technology

Lihua Wen

Lihua Wen

Department of Geography, Handan UniversityHandan, China
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Wen, Lihua
, 
Hongyao Liu

Hongyao Liu

Handan Institute of Agricultural ScienceHandan, China
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Liu, Hongyao
, 
Jihong Chen

Jihong Chen

HeBei Gao Xiang Geographic Information Technology Service Co. LtdHandan, China
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Chen, Jihong
, 
Bahjat Fakieh

Bahjat Fakieh

Information System Department, Faculty of Computing and Information Technology, King Abdulaziz UniversityJeddah, Saudi Arabia
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Fakieh, Bahjat
 e 
Samer M. Shorman

Samer M. Shorman

Department of Accounting and Finace, Faculty of Administrative Sciences, Applied Science UniversityAl Eker, Kingdom of Bahrain
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Shorman, Samer M.
  
22 nov 2021
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Pubblicato online: 22 nov 2021
Pagine: 275 - 284
Ricevuto: 17 giu 2021
Accettato: 24 set 2021
DOI: https://doi.org/10.2478/amns.2021.2.00096
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© 2021 Lihua Wen et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Fig. 1

Spatial distribution of accumulated rainfall in Hebei Province from 08:00 on July 18 to 08:00 on July 21, 2017
Spatial distribution of accumulated rainfall in Hebei Province from 08:00 on July 18 to 08:00 on July 21, 2017

Fig. 2

Spatial distribution of comprehensive rainfall intensity grades in Hebei Province from 08:00 on July 18 to 08:00 on July 21, 2017
Spatial distribution of comprehensive rainfall intensity grades in Hebei Province from 08:00 on July 18 to 08:00 on July 21, 2017

Fig. 3

Risk assessment of heavy rain disaster in Hebei Province from 08:00 on July 18 to 08:00 on July 21, 2017
Risk assessment of heavy rain disaster in Hebei Province from 08:00 on July 18 to 08:00 on July 21, 2017

Fig. 4

Agricultural impact assessment of heavy rain disaster in Hebei Province from 08:00 on July 18 to 08:00 on July 21, 2017
Agricultural impact assessment of heavy rain disaster in Hebei Province from 08:00 on July 18 to 08:00 on July 21, 2017

Rainfall duration index assignment standard

Rain duration index Number of consecutive rainy days/d
1 ≥ 6
2 4 ≤ T < 6
3 2 ≤ T < 4
4 <2

Evaluation standard of daily precipitation intensity index

Daily Precipitation Intensity Index 24 h rainfall/mm
1 ≥ 80.0
2 60.0–79.9
3 40.0–59.9
4 20.0–39.9

Elevation and elevation standard deviation evaluation criteria

Terrain elevation/m Elevation standard deviation/m
≤ 1 1–10 ≥ 10
≤ 100 0.9 0.8 0.7
100–300 0.8 0.7 0.6
300–700 0.7 0.6 0.5
≥ 700 0.6 0.5 0.4

Grading Standard of Comprehensive Rainfall Intensity Index

Grading standards Rain intensity index
Super strong 1 ≤ RSI ≤ 4
Strong 4 < RSI ≤ 8
Stronger 8 < RSI ≤ 12
Medium 12 < RSI ≤ 16
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