中国南方冰雪灾害对森林可燃物影响的数量化分析

doi:10.11707/j.1001-7488.20081114

Scientia Silvae Sinicae ›› 2008, Vol. 44 ›› Issue (11): 69-75.doi: 10.11707/j.1001-7488.20081114

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Quantity Analysis of Forest Fuel Under the Impacts of Snow Damage in South of China—Case Study in Hunan Province

Wang Mingyu¹,Shu Lifu¹,Zhao Fengjun¹,Wang Qiuha¹,Yan Hou²,Dai Xing'an³,Tian Xiaorui¹

1.Institute of Forest Ecology,Environment and Protection,CAF Key Open Laboratory of Forest Protection of State Forestry Administration Beijing 100091;2.Forest Fire Alarming and Monitoring Information Center,State Forestry Administration Beijing 100714;3.Resource and Environment College of Central-South University of Forestry and Technology Changsha 410004

Received:2008-07-24 Revised:1900-01-01 Online:2008-11-25 Published:2008-11-25

Abstract

Abstract: We used MODIS 1B dataset,ground truth data and plant distribution data to classify the forest fuel into broadleaf forest,masson pine forest,Chinese fir forest,mixed forest,other coniferous forest,and bamboo forest.We classified the damage level of forests based on ground truth and remote sensing analysis,and analyzed the increased or decreased amount of different fuel.We classified the damage level into 4 classes based on the difference of NDVI change before and after the snow damage.The results showed:the area of class Ⅰ was 4.000 7 million hm²,account for 41.68% of total area,the area of class Ⅱ was 4.039 5 million hm²,account for 41.93% of total area,class Ⅲ was 1.009 million hm²,account for 10.42% of total area,and class Ⅳ was 0.5776 million hm²,account for 5.96% of total area.After the damage the surface fuel loading increased dramatically,and the increased amount was different for various fuel and various damage levels.The maximal increas of times of surface fuel was 32.81 times,and the maximal fuel loading was 142.82 t·hm^-2.

Key words: fuel, MODIS, NDVI

Wang Mingyu;Shu Lifu;Zhao Fengjun;Wang Qiuha;Yan Hou;Dai Xing'an;Tian Xiaorui. Quantity Analysis of Forest Fuel Under the Impacts of Snow Damage in South of China—Case Study in Hunan Province[J]. Scientia Silvae Sinicae, 2008, 44(11): 69-75.

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Quantity Analysis of Forest Fuel Under the Impacts of Snow Damage in South of China—Case Study in Hunan Province

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