本文以毛乌素沙区柳湾灌丛草场荒漠化为例，应用植被分类、排序和梯度分析等技术，探讨荒漠化评价的理论和方法。
Salix scrub pasture in Maowusu desert as a case was studied. With the vegetation classification, ordination and gradient analysis, the theory and methods for desertification assessment were discussed.
因此研究退化湿地土壤的理化性质，不仅有助于我们了解毛乌素沙区湿地退化的原因，还为进一步保护湿地生态系统提供了理论依据。
So, study the physical and chemical properties of degraded wetland soils help to investigate the cause of wetland degraded and provide theoretical basis for wetlands ecosystem protecting.
毛乌素是我国较大的沙区之一。
榆林沙区地处毛乌素沙地的东南部，属毛乌素沙地向东南移动的最活跃地段。
The sand area in Yulin lies in the southeast of the Maowusu desert, which is the most active region, where the Maowusu desert migrates to the southeast.
宁夏盐池县沙边子沙漠化土地整治研究基地位于毛乌素沙地西南部半干旱农牧交错区。
Shabianzi Research Base For Desertified Land Management is situated in semi-arid, mixed farming and grazing zone southwest of Mu Us Sandy Land.
宁夏盐池县沙边子沙漠化土地整治研究基地位于毛乌素沙地西南部半干旱农牧交错区。
Shabianzi Research Base For Desertified Land Management is situated in semi-arid, mixed farming and grazing zone southwest of Mu Us Sandy Land.
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