期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
Emissions of volatile organic compounds from heated needles and twigs of Pinus pumila 被引量:8
1
作者 ZHAO Feng-jun SHU Li-fu WANG Qiu-hua WANG Ming-yu TIAN Xiao-ruiInstitute of Forest Ecology,Environment and Protection,Chinese Academy of Forestry Forest Protection Laboratory of State Forestry Administration,Beijing 100091,P.R.China. 《Journal of Forestry Research》 SCIE CAS CSCD 2011年第2期243-248,共6页
A study was conducted to explore the mechanism that emissions of volatile organic compounds(VOC) from heated needles and twigs(200°C,within 15 min) of Pinus pumila affect fire behaviours using the technology ... A study was conducted to explore the mechanism that emissions of volatile organic compounds(VOC) from heated needles and twigs(200°C,within 15 min) of Pinus pumila affect fire behaviours using the technology of Thermal Desorption-Gas Chromatography-Mass Spectrometry(TD-GC-MS).The results indicated that the main components of VOC from heated needles and twigs are terpenoids.Most of these terpenoids are monoterpenes.Terpenoids account for 72.93% for the needles and 92.40% for the twigs of the total VOC,and their emission ratios are 61.200 μg·g-1 and 217.060 μg·g-1 respectively.Heated twigs can emit more terpenoids than heated needles because twigs had more volatile oils than needles.In actual fires,these large amounts of terpenoid emissions,especially the monoterpene emissions,have strong effects on fire behaviors that are not only in the initial stage but also in the fast propagation stage of fires.These flammable gases are capable of causing violent combustion and creating crown fires.In addition,if these gases accumulate in an uneven geographical area,there will be a possible for eruptive fires and/or fires flashover to occur. 展开更多
关键词 forest fire pinus pumila volatile oil volatile organic compounds(VOC) TERPENOIDS
下载PDF
Fire Occurrence Environments in Pinus pumila Forests
2
作者 ZHAO Fengjun1 DU Jianhua2 WANG Mingyu1 SHU Lifu1 1. Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry Key Open Laboratory of Forest Protection, State Forestry Administration, Beijing 100091, P. R. China 2. Forest Fire Management Office, State Forestry Administration, Beijing 100714, P. R. China 《Chinese Forestry Science and Technology》 2010年第4期59-64,共6页
In recent years, many serious forest fires occurred in precious Pinus pumila forests in Daxing'anling Mountains of Heilongjiang Province and Inner Mongolia. But up to now, there is still a lack of proper understan... In recent years, many serious forest fires occurred in precious Pinus pumila forests in Daxing'anling Mountains of Heilongjiang Province and Inner Mongolia. But up to now, there is still a lack of proper understanding of fire occurrence environments in P. pumila forests. In present paper, we investigated and studied the fire occurrence environments. The results showed that fires in P. pumila forests had their own special fire environments. Abundant fuel, drought weather, dry thunder and high altitude terrain created the special fire occurrence environments in P. pumila forests in Daxing'anling 展开更多
关键词 pinus pumila forest fire fire occurrence environment meteorological factor FUEL fire cause
原文传递
Fire Burning Characteristics, Attacking Techniques and Safety Precautions in Pinus pumila Scrubs
3
作者 king Techniques and Safety Precautions in Pinus pumila ScrubsZHAO Fengjun1 DU Jianhua2 SHU Lifu1 1. Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry Key Open Laboratory of Forest Protection, State Forestry Administration, Beijing 100091, P.R.China 2. Forest Fire Management Office, State Forestry Administration, Beijing 100714, P.R.China 《Chinese Forestry Science and Technology》 2010年第1期67-73,共7页
In China, Pinus pumila is mainly distributed in Daxing’anling, while those growing in the eastern Daxing’anling are primarily covered under the jurisdiction of Huzhong Forest Bureau. P. pumila is an evergreen shrub,... In China, Pinus pumila is mainly distributed in Daxing’anling, while those growing in the eastern Daxing’anling are primarily covered under the jurisdiction of Huzhong Forest Bureau. P. pumila is an evergreen shrub, 3-6 m high, and always grows vigorously. Its trunks creep along the ground, usually 10 m long or more. It is easily flammable because of the large amounts of resins and volatile oils in its body. Attacking forest fires is a dangerous work, especially in P. pumila scrubs. The fires in P. pumila scrubs are very different from those in other forest types, e.g. fierce combustion and heavy smoke. In this paper, the distribution characteristics of P. pumila scrubs were presented. Attacking techniques and safety precautions for attacking fires in P. pumila scrubs were also discussed. 展开更多
关键词 pinus pumila forest fire attacking technique safety precaution
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部