土地荒漠化过程中土壤养分变化分析及对策研究

Analysis on the Change of Soil Nutrient during the Process of Soil Desertification and the Countermeasures

为了探讨荒漠化过程对土壤养分的影响,了解荒漠化过程中土壤养分的变化规律,选择河北坝上地区为调查区,按照荒漠化的不同程度设置样地,系统调查了轻度、中度、严重和极严重荒漠化土地表层(0～20 cm)土壤养分的变化。结果表明,土壤养分含量的减少与荒漠化具有退化方向的一致性和退化过程同步性等特点。另外,针对土壤养分的这一变化特征提出了一些对策措施。

Bashang in Hebei Province was chosen as the investigation area in order to explore the influence of desertification on soil nutrient and understand the change of soil nutrients during the process of soil desertification. The sample lands were set up according to different de- grees of desertification, and the （0 -20 cm） surface soil nutrients of light desertiflcation, moderate desertification, serious desertifieation, ex- tremely serious desertification area were systematically investigated. The results indicated that the decrease of soil nutrients was consistent and synchronic with the desertification process. In addition, according to the change features of soil nutriettts, some countermeasures were proposed.