摘要
在GIS技术的支持下,通过格网取样法获得研究区样点基本环境要素数据及样点单位面积生物量数据;以环境要素数据为自变量,样点单位面积生物量为因变量,采用二元四次多项式建立趋势方程并生成立体模型。研究结果表明,海拔、坡度、坡向等环境因素及其组合对森林景观生物现存量影响显著,森林植被本身的生物学特征及其它干扰因素也对其有重要影响。
Huoditang forest center was selected as a studied case in this paper. On the support of GIS technology and through the method of net sampling, the data of basic environmental elements and biomass per acreage of sampling sites were obtained. Using the data of environmental elements as independent variables and the biomass per acreage as dependent variable, the trend equation was erected by using duality quartic polynomial function and then the diorama was also created. The result shows that the environmental elements such as elevation, gradient, slope direction and their combinations play great role on the present biomass of forest landscape, the biological characters of forest vegetation and other interfere factors also have important effect on the present biomass.
出处
《中南林业调查规划》
2003年第4期14-17,共4页
Central South Forest Inventory and Planning
基金
国家生态定位站基金资助 (陕西秦岭火地塘森林景观特征及生态功能研究 :2 0 0 1- 0 4)项目
