... causation 起因 cause of desertification 荒漠化的原因 central place theory(CPT) 中心位置理论(CPT) ...
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The final major human cause of desertification is soil salinization resulting from over irrigation.
造成土地沙漠化的最后一个主要人为因素在于人类过度灌溉导致土壤的盐碱化。
Unreasonable cultivation is the major cause of desertification in north China and 45% of degenerated land in China.
不合理的开垦是我国北方土地沙质荒漠化的主要原因，北方农牧交错带45％的退化土地属这一类型。
The main cause of desertification is overgrazing and its leading indicator is the form of aeolian landform, by which the grade of desertification is determined.
首要的是风沙地貌特征，沙漠化土地的分级主要依此而定。
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