基于海底栅格表面模型的底栖生物资源量研究  

Marine benthic biomass based on a grid surface model of submarine

作　　者：李轶平[1] 王彬[1] 孙明[1] 付杰[1] 于旭光[1] 董婧[1] 

机构地区：[1]辽宁省海洋水产科学研究院辽宁省海洋生物资源与生态学重点实验室,辽宁大连116023

出　　处：《大连海洋大学学报》2015年第5期563-566,共4页Journal of Dalian Ocean University

基　　金：国家海洋公益性行业科研专项(200905019)

摘　　要：针对传统的投影面积计算方法未充分考虑海底坡度等因素影响的问题,以传统计算方法为基础提出一种改进的计算方法,即对海底等深线矢量数据进行栅格化处理,生成海底栅格表面模型数据,在此基础上提取坡度信息,生成坡度正割值,将投影面积与坡度正割值进行叠加处理,最终得到海底地形表面积,将表面积和投影面积分别与底栖生物采样数据进行叠加,比较采用两种方法得出的底栖生物资源量。结果表明,用传统方法和改进方法得出的底栖生物量存在较大差异,采用海底表面积计算底栖生物量可以更加准确、真实地反映海底底栖生物资源量的分布格局。Since the influence of factors such as slope are not fully considered in the traditional calculation method of projection area （ commonly known as the sweeping area in resource science） , an improved calculation method is proposed from the traditional methods. In the new method,we grid processing contour vector data and then generate surface model data, based on which the slope information and the slope secant value are found. Eventually the sur-face area is calculated by stack processing projection area and the slope secant value. If the surface area and the projection area are superimposed benthic data, the comparative estimation of two benthic biomasses by the respec-tive kinds of methods shows that there are significant differences between traditional method and improved method. The findings indicate that the method of grid surface model can reflect the distribution patterns of benthic resources quantity more accurately and actually.

关 键 词：海底栅格表面模型 底栖生物 表面积 正割值 

分 类 号：Q9[生物学]