... northern and central guangxi 桂中北 change in cultivated land 耕地变化 spraying and dripping tower 喷淋塔 ...
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This paper reviews and summarizes main progresses in the study on quantitative change in cultivated land and points out some problems still existing in the study and possible solutions.
本文通过对我国耕地数量变化研究的回顾,总结了耕地数量变化研究方面的主要进展,并指出了研究中存在的主要问题及其给人们的启示。
This paper analyzes the change of cultivated land intensive use degree from 1990 to 2006 in China and its influencing factors using canonical correlation analysis.
本文运用典型相关分析方法,对全国1990 - 2006年的耕地利用集约度变化态势及其影响因素进行了分析。
Therefore, it is significant to study the change of cultivated land in both theory and practice.
因此,展开耕地资源变化的研究具有重要的理论意义和实践意义。
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