共查询到20条相似文献,搜索用时 500 毫秒
1.
2.
3.
4.
5.
6.
地球信息科学基础理论纲要(上) 总被引:4,自引:0,他引:4
承继成 《地球信息科学学报》1996,(2):15-24
前言 关于地理信息系统(GIS)的理论问题,存在着两种看法。一种是:GIS没有理论,只是工具,是技术;另一种是:GIS是科学,有理论。GIS是属于地球信息科学的。地球信息科学的基础理论就是它的理论。 在正式讨论地球信息科学基础之前,首先要研究若干基础定义或概念。首先,什么是地球信息科学(Geo-Informatics或Geo-Information Science,简写为GISci)。它是指研究地球表层信息流的科学,或研究地球表层资源和环境、经济和社会的综合信息流的科学。 相似文献
7.
郭廷彬 《中国地理科学(英文版)》1993,(4)
"The study of plateau lake's ancient limnology in lime stone region of central Yunnan"is a program subsidized by the National Natural Science Foundation of China, practied bySong Xueliang in Yunnan Institute of Geology. After the program had been authorized, inorder to have the program carried out successfully,the National Natural Science Founda-tion of China subsidized the researchers to cooperate with relative American institutes. 相似文献
8.
《山地科学学报》2016,(3)
正The cover photo in the Journal of Mountain Science(Vol.12.No.3,2015)was taken by ZHOU Jie in 2013.The photo shows the winter landscape of the Hani rice terraces system found in Honghe Hani and Yi Autonomous Prefecture,Yunnan Province,China.The Hani terraces system is one of the best examples of traditional farmers"wisdom.It has formed spectacular"forest-village-terrace-river" 相似文献
9.
10.
11.
12.
《山地科学学报》2004,1(3):F002-F002
The “Journal of Mountain Science”(ISSN 1672-6316),started in 2004,is an international English-language journal on mountain sciences.The JMS is sponsored by the Chinese Academy of Sciences(CAS).and is ased on the Chengdu Institute of Mountain Hazards and Environment,CAS and pulished by the Science Press. 相似文献
13.
14.
《中国地理科学(英文版)》2003,(1)
"International Conference on Computer Graphics and Spatial Information System' 2002" was held in Bei-jing, China on August 6-8, 2002. The conference was sponsored by Institute of Geographical Sciences andNatural Resources Research, the Chinese Academy of Sciences; Peking University; Research Center for E-co-Environmental Science, the Chinese Academy of Sciences; Department of Agricultural Application, National 相似文献
15.
16.
17.
On the deep sea demersal fish communities of the East China Sea 总被引:1,自引:0,他引:1
Cluster analysis of data on the species similarity index offish samples taken at various sampling stations of different depths by the R /V " Dongfang " of the East China Sea Fisheries Research Institute, Chinese Academy of Fisheries Science, during the deep sea demersal fish resources survey in May - November, 1981, showed deep sea demersal fish fauna of the western part of the East China Sea can be grouped into the following communities :1)The outer continental shelf community ,2)The continental slope community, and3)The western Okinawa Trough community .The authors found that not only the species diversity index, but also the species similarity index are important criteria to reflect the structure of biotic community. 相似文献
18.
19.
《山地科学学报》2014,(5)
<正>The Journal of Mountain Science(JMS),founded in2004,is an international English-language journal on mountain sciences.JMS is supervised by the Chinese Academy of Sciences(CAS),sponsored by the Chengdu Institute of Mountain Hazards and Environment,CAS,published by Science Press 相似文献
20.
Patel NILANCHAL 《中国地理科学(英文版)》2006,(1)
1INTRODUCTIONMandelbrot stated the uncertainty of the length of a coastline in his paper "How long is the coast of Britain? Statistical self-similarity and fractional dimension" pub- lished in Science in 1967 (MANDELBROT, 1967). The concepts of fractal and fractal dimension were presented for the first time in that paper and have been applied to quantitatively describing the difference of crooked coastlines of British and South Africa. Compared with the Euclidean geometry with more… 相似文献