Study on flammability of herbaceous fuel in typical grassland of China-Mongolia border

doi:10.12302/j.issn.1000-2006.201910006

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2021, Vol. 45 ›› Issue (5): 171-177.doi: 10.12302/j.issn.1000-2006.201910006

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Study on flammability of herbaceous fuel in typical grassland of China-Mongolia border

ZHANG Heng¹(), CUI Mengran², SHAN Yanlong³^,^*(), WANG Fei¹^,^*()

1. College of Forestry, Inner Mongolia Agricultural University, Hohhot 010019, China
2. College of Grassland and Resources, Inner Mongolia Agricultural University, Hohhot 010018, China
3. Forestry College of Beihua University, Beihua University Science and Technology Innovation Center of Wildland Fire Prevention and Control, Jilin 132013, China

Received:2019-10-11 Accepted:2021-01-21 Online:2021-09-30 Published:2021-09-30
Contact: SHAN Yanlong,WANG Fei E-mail:zhangheng_nefu@126.com;shanyl@163.com;wangfeinihao2003@aliyun.com

Abstract

Abstract:

【Objective】 This paper studied the flammability of fuel in typical grasslands of Erenhot City (EC), East Wujimgin Banner (EWB) and Xin Barag Right Banner (XBRB) in China-Mongolia border. Studying the flammability of fuel in typical grasslands is of great significance for controlling and prevention of the occurrence of grassland fires in China-Mongolia border. 【Method】 Based on field investigation and indoor combustion, analyzed the physical and chemical properties such as crude fat, ash content, ignition point and calorific value of fuel in typical grasslands in China-Mongolia border and based on SPSS 18.0 and Origin 2018 software, used the principal component analysis to analyze the physical and chemical properties to obtain the fuel flammability. 【Result】 Crude fat of fuel in the typical grasslands in China-Mongolia border from strong to weak is EWB, XBRB, EC. Calorific value from strong to weak is XBRB, EC, EWB. Burning point from strong to weak is XBRB, EWB, EC. Ash content from strong to weak is EC, EWB, XBRB. According to the comprehensive index of flammability performance combined with the fuel physical and chemical properties, the flammability of typical grasslands in China-Mongolia border from strong to weak is EWB, EC, XBRB. 【Conclusion】 The typical grassland on the border between China and Mongolia in the areas of EC, EWB and XBRB, fuel flammability in XBRB grassland is weakness and has the lowest fire risk; Based on fuel properties and meteorological conditions, EWB has the highest fire risk and should take prevention measures.

Key words: herbaceous fuel, China-Mongolia border, grasslands, lammability, principal component analysis(PCA)

CLC Number:

S812.6
S718

ZHANG Heng, CUI Mengran, SHAN Yanlong, WANG Fei. Study on flammability of herbaceous fuel in typical grassland of China-Mongolia border[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2021, 45(5): 171-177.

Figures/Tables 5

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采样点 sampling point	地理坐标 geographic coordinates	年均降水量/ mm average annual precipitation	年均蒸发量/mm average annual evaporation	干旱指数 drought index	年均气温/℃ average annual air temperature	年极端温度/℃ annual extreme temperature
采样点 sampling point	地理坐标 geographic coordinates	年均降水量/ mm average annual precipitation	年均蒸发量/mm average annual evaporation	干旱指数 drought index	年均气温/℃ average annual air temperature	最高 max.	最低 min.
EC	111°96 E 43°65'N	142.2	2 695	19.95	3.4	41.1	-37.1
EWB	116°97 E 45°52'N	300.0	>3 000	4.00~10.00	1.6	39.7	-40.7
XBRB	118°23E 48°22'N	247.3	2 000	8.09	0.3	40.2	-44.9

主成分 principal component	信息含量 information content	贡献率/% contribution rate	累计贡献率/% cumulative contribution rate
1	3.297	82.421	82.421
2	0.703	17.579	100.000
3	-1.000×10¹³	-1.012×10¹³	100.000
4	-1.001×10¹³	-1.025×10¹³	100.000

指标 index	主成分1 principal component 1	主成分2 principal component 2
粗脂肪crude fat content	-0.246	0.969
灰分ash content	0.947	-0.321
燃点burning point	0.929	-0.371
热值caloric values	-0.991	0.133

地区 area	主成分1 principal component 1	主成分2 principal component 1	抗火性值 fire resistance value	排序 rank
EC	-0.342 04	1.102 88	-8.35	2
EWB	-0.784 10	-0.847 66	-79.53	3
XBRB	1.126 14	-0.255 22	88.33	1

Study on flammability of herbaceous fuel in typical grassland of China-Mongolia border

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