Pollutants registration system is one of basic works in environmental management field and needs technological support of modern information technology.
排污申报登记是环境管理的基础性工作，需要现代信息技术提供有力的技术保证。
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.
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。
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