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秸秆露天焚烧排放的TSP等污染物清单 总被引:28,自引:5,他引:28
根据2000—2003年各省市农作物的产量,估算了农业秸秆的总量;结合从有关文献查阅的排放因子,计算了各年份我国大陆秸秆露天焚烧所排放的TSP、PM10、SO2、NOX、NH3、CH4、EC、OC、VOC、CO、CO2的总量及各省市的排放清单,并进一步细化到县、区级行政区。研究表明,由于经济发展水平和生活习惯的不同,秸秆露天焚烧排放的污染物在地区间的分布极不均衡,排放量较大的包括华东、东北地区的各省市;单位排放污染物量较高的地区由东北至华东呈带状分布。 相似文献
14.
介绍曲靖市森林防火现状及火烧防火线技术应用概况.阐述森林火烧防火线作业的最佳时期选择、工作程序、人员组织、任务分配、设备配置以及作业程序等. 相似文献
15.
Jili Provincial Academy of Forestry Science Hongshi Forestry Bureau of Jili Province 《吉林林业科技》1994,(1):1-6
特种黑木炭是用柞、槲烧制的具有较高密度的木炭。影响黑木炭密度的主要因素有原料含水率和径级、干燥与炭化速度、炭窑窑形及精炼。本文还对烧制特种黑木炭过程中的具体操作技术要点进行了详尽的论述。 相似文献
16.
Analysis of Original Causes of Reed Fires in Zhalong Nature Wetland Reserve in Heilongjiang Province
WANG Mingyu SHU Lifu TIAN Xiaorui WANG Zhicheng. Research Institute of Forest Ecology Environment Protection Chinese Academy of ForestryThe State Forestry Administration’s Key Open Laboratory of Forest ProtectionBeijing P. R. China . Institute of Forest Protection of Heilongjiang Province Harbin P. R. China 《中国林业科技(英文版)》2006,5(1):57-61
Zhalong Nature Reserve is located in the border areaof Qiqihaer City, Fuyu County, Lindian County andTailai County of Heilongjiang Province. The area ofthe reserve is 210 000 ha. The reserve is the firstnature reserve for protecting wetland and crane inChina. There were more than 300 red-crownedcranes here at the very most. Zhalong Nature Reserveis situated at the Songnen Plain, the lower stream ofthe Wuyuer River. It is the biggest nature reserve inChina that takes crane and wetland … 相似文献
17.
据样地调查,该25年生杉木人工林群落的植物有41科84属120种,群落的外貌特征以包括藤本在内的高位芽占绝对优势,叶特征以革质,单叶,中小型叶为主,由于该群落的幼树层以米储和木荷等占优势,若让其自然发展或杉木林采伐后不炼山,并排除其它人为干扰,该群落将向与常绿阔叶林采伐前的群落类型相似的方向演替。 相似文献
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Guangjie Zhao Wensheng Luo T. Furuno Qiang Ren Erni Ma 《Frontiers of Forestry in China》2007,2(2):231-236
In order to investigate the pyrolytic characteristics of the burning residue of fire-retardant wood, a multifunctional fire-resistance
test oven aimed at simulating the course of a fire was used to burn fire-retardant wood and untreated wood. Samples at different
distances from the combustion surface were obtained and a thermogravimetric analysis (TG) was applied to test the prrolytic
process of the burning residue in an atmosphere of nitrogen. The results showed that: 1) there was little difference between
fire-retardant wood and its residue in the initial temperature of thermal degradation. The initial temperature of thermal
degradation of the combustion layer in untreated wood was higher than that in the no burning wood sample; 2) the temperature
of the flame retardant in fire-retardant wood was 200°C in the differential thermogravimetry (DTG). The peak belonging to
the flame retardant tended to dissipate during the time of burning; 3) for the burning residue of fire-retardant wood, the
peak belonging to hemicellulose near 230°C in the DTG disappeared and there was a gentle shoulder from 210 to 240°C; 4) the
temperature of the main peaks of the fire-retardant wood and its burning residue in DTG was 100°C lower than that of the untreated
wood and its burning residue. The rate of weight loss also decreased sharply; 5) the residual weight of fire-retardant wood
at 600°C clearly increased compared with that of untreated wood. Residual weight of the burning residue increased markedly
as the heating temperature increased when burning; 6) there was a considerable difference with respect to the thermal degradation
temperature of the no burning sample and the burning residue between fire-retardant wood and untreated wood.
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Translated from Journal of Beijing Forestry University, 2006, 28(3): 133–138 [译自: 北京林业大学学报] 相似文献
19.
We followed the establishment and growth response of 13 commercial tree species to canopy opening, above-ground biomass removal, and experimental burns of low and high intensities in a lowland dry forest in Bolivia. Three patterns of response to treatments were observed among the most abundant commercial tree species. (1) Shade-intolerant species regenerated mostly from seed and had the highest survival and growth rates following high-intensity burns. (2) Shade-tolerant species were abundant in gap control and plant removal treatments. Treatments had little effect on the height growth of these species. (3) Individuals of root sprouting species were most abundant following plant removal and low-intensity burn treatments. Treatments had little effect on the height growth of these species. The wide variation in species responses to gap treatments found in this study not only reinforces the concept that species are distributed along a continuum of shade-tolerance levels, but that other aspects of species biology, such as seed dispersal type or sprouting behavior, further differentiate regeneration strategies. The variety of regeneration strategies found among the species at this forest site will require a flexible management scheme that mixes more intensive silvicultural treatments such as prescribed burning with less intensive treatments. 相似文献
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