Forest Fire Risk Zoning Based on MaxEnt Model—A Case Study of Yantai Yellow and Bohai Seas New Area

doi:10.13466/j.cnki.lczyyj.2024.02.002

Abstract

Abstract:

Forest fires are sudden and destructive natural disasters influenced by various factors such as meteorology,terrain,vegetation,and human activities.The establishment of a forest fire risk zoning is essential for effective prevention and controlling forest fires,which is of great significance for carrying out related work in the future.As a machine learning method,MaxEnt has gained widespread domestic and international usage in predicting probabilities of occurrences and identifying zoning of forest fire risk due to its demonstrated high accuracy.Yantai Yellow and Bohai Seas New Area,located at the junction of Jiaodong Peninsula and Yellow and Bohai Seas has a developed economy,high population density,and significant human impact on forests,making it representative of forest fire prevention efforts in China.This study took Yantai Yellow and Bohai Seas New Area as an example and utilized MaxEnt to predict the probability of forest fire occurrence and delineate forest fire risk zoning based on historical fire incident data,as well as dominant environmental variables such as meteorology,topography,land cover types,and socio-economic factors.The research findings indicate that:1)Dominant tree species(group)and population density have significant impacts on forest fire occurrence;2)In Yantai Yellow and Bohai Seas New Area,the areas with high,medium,and general risk levels are similar in size.High-risk areas are mainly concentrated in the southwestern mountainous region,while general-risk areas are primarily found along the northeastern coast.Through verification,this study's results have shown a high level of accuracy and can provide a methodological exploration for subsequent national forest fire risk zoning.

Key words: forest fire zoning, MaxEnt, Yantai

CLC Number:

S762

LI Jie, CHAO Bixiao, YAN Yuqian, JIANG Fan, ZHANG Dawei, SUN Yongkang, ZOU Quancheng. Forest Fire Risk Zoning Based on MaxEnt Model—A Case Study of Yantai Yellow and Bohai Seas New Area[J]. Forest and Grassland Resources Research, 2024, (2): 8-16.

Figures/Tables 9

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数据类型	环境变量	单位
生物气候	最干季平均温度	℃
	最暖季平均温度	℃
	最干季降水量	mm
	最暖季降水量	mm
地形	高程	m
	坡度	(°)
	坡向
地物类型	优势树种(组)
	土地利用类型
	植被覆盖类型
	归一化植被指数
社会经济	距居民点距离	m
	距道路距离	m
	GDP	万元/km²
	人口密度	人/km²

镇、街道	一般风险区		中风险区		高风险区		总计村数量/个
镇、街道	面积占比/%	村数量/个	面积占比/%	村数量/个	面积占比/%	村数量/个	总计村数量/个
大季家街道	53.43	12	24.13	12	22.44	13		37
潮水镇	27.53	20	46.27	40	26.20	18		78
福莱山街道	100.00	1	0.00	0	0.00	0		1
古现街道	14.52	11	31.60	21	53.88	29		61
烟台黄渤海新区	37.39	44	31.70	73	30.91	60		177