| 黑龙江省森林火灾年际变化的小波分析 |
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| 引用本文： | 田晓瑞,李红,舒立福,王明玉.黑龙江省森林火灾年际变化的小波分析[J].自然灾害学报,2007,16(2):118-121. |
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| 作者姓名： | 田晓瑞 李红 舒立福 王明玉 |
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| 作者单位： | 中国林业科学院森林生态环境与保护研究所国家林业局森林保护学重点实验室,北京100091 |
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| 基金项目： | 国家自然科学基金;国家科技支撑项目 |
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| 摘 要： | 小波分析是一种新的时一频分析工具，广泛适用于非线性科学领域。选用Daubechies小波系对黑龙江省森林火灾的特征进行了分解和重构，结果表明，黑龙江省1953—2002年受害森林面积有近15～20a的周期波动性，森林火灾次数则有近30a的周期波动性。未来几年内，该省森林火灾受害面积和火灾次数会在较低的水平上波动，但森林火灾可能要比2000年严重。
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| 关 键 词： | 小波分析 森林火烧面积 火灾次数 黑龙江省 |
| 文章编号： | 1004-4574（2007）02-0118-04 |
| 收稿时间： | 2006-10-30 |
| 修稿时间： | 2006-10-302007-03-12 |
Wavelet analysis of annual variation of forest fire in Heilongjiang Province |
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| TIAN Xiao-rui,LI Hong,SHU Li-fu,WANG Ming-yu.Wavelet analysis of annual variation of forest fire in Heilongjiang Province[J].Journal of Natural Disasters,2007,16(2):118-121. |
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| Authors: | TIAN Xiao-rui LI Hong SHU Li-fu WANG Ming-yu |
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| Affiliation: | Research Institute of Forest Ecology, Environment and Preteetion, Chinese Academy of Forestry, State Forestry Administrations Key open Lab of Forestry Protection Beijing 100091, China |
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| Abstract: | This paper uses Daubechie's wavelet system to analysis the characters of forest fire.The wavelet analysis of burned areas and fire frequency in Heilongjiang Province during 1953-2002 shows that burned area variation has a period nearly 15-20 years and the frequency of forest fire has a period of 30 years.With the wavelet analysis,it can be forecasted that the fire in Heilongjiang Province will be more serious than that in 2000,but the burned area and fire frequency will fluctuate at a relative low level. |
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| Keywords: | wavelet analysis burned forest area frequency of fire Heilongjiang Province |
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