大同盆地盐碱荒地开发利用适宜性评价

Suitability Evaluation of Development and Utilization of Saline-alkali Wasteland in Datong Basin

为有效开发盐碱荒地的潜力和利用土地后备资源,本文以大同盆地盐碱荒地为研究区,从自然、社会及农业角度选取评价指标,基于AHP层次分析法,并结合专家经验,对研究区进行开发利用适宜性评价。根据评价综合得分,把盐碱荒地分为六个等级,其中一级盐碱程度最轻,占总面积的12.10%,二级占16.07%,三级23.58%,四级21.67%,五级18.07%,六级盐碱程度最重,占总面积8.51%。将一级至四级划为宜耕地区,五级划分为宜林草区,六级划分为其他利用区。评价结果为科学合理地制定盐碱荒地开发利用规划、有效防止盐碱荒地面积的增加提供了参考。

For effective development of reserve potential of saline-alkali wasteland and use of land resources,based on the saline-alkali wasteland as the research area of datong basin,from the perspective of nature,society and agriculture selecting evaluation index,based on the AHP analytic hierarchy process （AHP）,combined with the expert experience,the development and utilization of suitability was evaluated in the studied area.According to the evaluation score,the saline-alkali wasteland was divided into six grades,including salinity degree was the lightest,accounting for 12.10％ of the total area,the secondary accounted for 16.07 ％,level 3 for 23.58 ％,level 4 for 21.67 ％,level 5 for 18.07 ％ and level 6 of salinity degree heaviest,account for 8.51％ of the total area.The level 1 to 4 was divided into appropriate arable land area,five area was divided into the waste grass,six levels was divided into other use area.The evaluation results set up a scientific and reasonable planning of development and utilization of saline-alkali wasteland,and provide the reference of preventing the increase of saline-alkali wasteland area.