利用GIS划分黑龙江省森林可燃物类型区(英文)

来源 :Journal of Forestry Research | 被引量 : 0次 | 上传用户:lemon616
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
本文采用黑龙江省各县的森林覆盖率、森林可燃物载量、林木组成、海拔、防火期月平均气温、相对湿度、风速和降水量8个因子,通过权重和累计概率的方法,应用ARC/INFO技术,并采用矢量图形法中的栅格数据矢量化法,把黑龙江省森林分布图和黑龙江省行政区划图绘成电子地图,然后将其叠加,再转换成大地坐标,从中提取相关数据,最后划分了5个等级的可燃物类型区。全省81个县(林业局)中一、二、三、四和五级森林可燃物类型区分别占全省总数的16%、17%、17%、11%、38%。一级森林可燃物类型区集中在大、小兴安岭、张广才岭、老爷岭等山地林区;五级森林可燃物类型区主要集中分布在松嫩平原、三江平原等地区;其它三种级别的森林可燃物类型区介于平原与山地之间。图2表4参8。 In this paper, we use the eight factors of forest coverage, forest fuel load, forest composition, altitude, monthly mean temperature of the fire protection period, relative humidity, wind speed and precipitation in Heilongjiang Province. By using the method of weight and cumulative probability, INFO technology, and the use of vector graphics method of raster data vectorization method, the Heilongjiang Province and Heilongjiang Province, the administrative map of the map is mapped into an electronic map, and then superimposed, and then converted to earth coordinates, from which to extract the relevant data, Finally, five levels of combustibles are divided. The first, second, third, fourth and fifth class of forest fuel types in 81 counties (forestry bureaus) in the province accounted for 16%, 17%, 17%, 11% and 38% of the total number of the province respectively. The first type of forest combustibles is concentrated in mountainous forest areas such as Xiaoxing’anling, Zhangguangcailing and Laoyeling. The five types of forest combustibles are mainly distributed in Songnen Plain and Sanjiang Plain. The other three levels of forest combustibles The type area is between the plain and the mountain. Figure 2 Table 4 Reference 8.
其他文献
Objective: To evaluate the effect of marine brown alga Sargassum polycystum extract on growth and biochemical parameters of Vigna radiata and Vigna mungo. Metho
目的:探讨CT对周围型小肺癌的诊断价值。方法:回顾性分析笔者所在医院2009年2月-2011年4月治疗的70例周围型小肺癌患者的病例资料,所有患者均使用CT进行辅助诊断。结果:所有患者
Objective:To prove the effect of administered orally lead acetate exposure on Bax expression and the apoptosis index of granulosa cells on antral follicle femal
Objective: To estimate the effects of the water extract of dates palm (Phoenix dactylifera) (DWE) on sperm quality parameters, testosterone level and serum anti
目的:分析探讨对阻塞性睡眠呼吸暂停综合征(OSAS)患者生活方式的护理干预方法及效果。方法:选取2018年3月至2019年3月间贵阳市第二人民医院收治的阻塞性睡眠呼吸暂停综合征患
文章结合中国兵器科学研究院宁波分院财产保险管理工作的实践,从企业财产保险管理的必要性、特点进行探索,提出企业财产保险管理应关注的重点,对企业生产经营活动风险防控,降
回 回 产卜爹仇贱回——回 日E回。”。回祖 一回“。回干 肉果幻中 N_。NH lP7-ewwe--一”$ MN。W;- __._——————》 砧叫]们羽 制作:陈恬’#陈川个美食 Back to yield
Objective: To assess the deleterious effects of foot and mouth disease vaccination on antioxidant profiles as well as oxidative stress in the semen of breeding
目的:本研究采用系统评价的方法,旨在探讨抑郁症是否为痴呆(阿尔茨海默氏病、血管性痴呆、其他痴呆)危险因素。方法:检索Pubmed和EMBASE,纳入抑郁症和痴呆症之间关系的队列研究。