GIS based soil information system (SIS) is very important for assessment of the capacity of land production, the status, rates of soil degradation and global change studies.
地理信息系统(GIS)支持下的土壤信息系统(SIS)在评价土地生产能力、土地退化的现状、速率和风险以及全球变化研究中具有重要意义。
It brings forward three terms which should be contented for the scanned vectorization production, and studies the algorithms for land scanning check based on location relation.
提出了矢量化成果应满足的三个条件，对基于位置关系的地块矢量化成果检核算法进行了研究。
This article, taking Haikou County as an example, based on the second national land investigation project, studies the method of countryside land-use investigation under the support of 3s technique.
本文以第二次全国土地调查项目为支撑，以海口市为例，对“3s”技术支持下的农村土地利用调查进行了研究。
Based on a data dimension compression technique, this paper studies the principles and method of remote sensing information extraction for urban built up land.
通过压缩数据维的方式，研究城市建筑用地信息准确提取的原理和方法。
This paper were carried out to study the central planting in less sockets and its irrigation methods. Studies were based on the technology of Carrier planting in Dry-land.
本文在载体播种技术基础上进行了稀穴密株种植方式及其补灌水技术的研究。
Thirdly, she studies forest land evaluation methods based on the three assessment rules and discusses the methods considering the purpose, value pattern and ways.
再次，根据市场法，成本法和收益法的基本原理和具体方法，讨论林地资产评估方法的选择；
Thirdly, she studies forest land evaluation methods based on the three assessment rules and discusses the methods considering the purpose, value pattern and ways.
再次，根据市场法，成本法和收益法的基本原理和具体方法，讨论林地资产评估方法的选择；
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