【摘 要】
:
Soil types, humus types and vegetation as well as their hypsometric variation were analysed in terms of sequences in the northern part of the high mountains of the Pirin National Park at altitudes bet
【出 处】
:
Journal of Mountain Science
论文部分内容阅读
Soil types, humus types and vegetation as well as their hypsometric variation were analysed in terms of sequences in the northern part of the high mountains of the Pirin National Park at altitudes between 1000 and 2400 m a.s.l. The study area is charac
其他文献
A new concept dealing with digital analysis of loess terrain,slope spectrum,is presented and discussed in this paper,by introducing its characteristic,represen-tation and extracting method from DEMs.
The spatial calculating analysis model is based on GIS overlay. It compartmental-izes the research district land into three spatial parts: unchanged part,converted part and increased part. By this met
Uncertainty modeling and data quality for spatial data and spatial analyses are im-portant topics in geographic information science together with space and time in geography,as well as spatial analysi
The indetermination of direction relation is a hot topic for fuzzy GIS researchers. The existing models only study the effects of indetermination of spatial objects,but ignore the uncertainty of direc
Composition tables play a significant role in qualitative spatial reasoning (QSR). At present,a couple of composition tables focusing on various spatial relations have been developed in a qualitative
本文的研究目的是探讨如何利用各类CAD/CAM/CAE软件的内设接口,充分发挥各类软件的特点,实现模型在ANSYS有限元分析软件中的直接应用。主要采用的方法是以单趾弹条为例分析ANSYS与AutoCAD之间的转换,ANSYS与MasterCAM之间的转换以及ANSYS与UG之间的转换。实践表明,实现ANSYS与其它CAD/CAM/CAE软件之间的数据转换,能有效提高ANSYS分析软件使用的效率,对
作者通过在多年的一线生产实践和思考的基础上,应用AutoLISP,结合工程师应用键盘的习惯,编写了实战应用性很强的图层、线型、颜色管理程序,极大的提高AutoCAD绘图效率。
4月15日,中国第24次南极考察队圆满完成各项科考后勤任务,乘坐首次完成现代化改装的"雪龙"号极地考察船,安全返回位于上海的中国极地考察国内基地码头。国家海洋
有时,一些游艇爱好者往往将注意力集中到他们最终的目的地上,便顾不得一些小的港口了,从而模糊了潜在的海岸和前进的方向。对于布列塔尼海岸,甚至更重要的航向,往往都要依靠闪光信号灯才能注意到。