摘要
对博尔塔拉河、精河流域绿洲土壤的理化性状进行了分析,认为该区土壤肥力整体水平并不高,并且较20a前普遍有所下降。之后,用Kriging进行插值,对研究区土壤综合肥力分布的规律进行了研究,结果表明,东南方向上土壤的综合肥力较高,西北方向上土壤的综合肥力较低。然后,利用灰色方法找寻了导致研究区土壤异质性的驱动因子,年蒸发量与灾害性天气日数是首要的自然驱动力,耕地面积和化肥施用量则是人文驱动力,并且以人文因素驱动作用占主导。
The increasing human activities in Bohe and Jinghe river basins have severely affected the local eco-environment and social development.The authors firstly analyze the soil physical-chemical properties,including pH value,nutrients,alkali-hydrolyzed nitrogen,available phosphorus,rapidly-available kalium and salt contents.The results indicated that soil fertility is generally lower than that of 20 years ago due to large soil particles,low soil organic matter and high level alkaline.Secondly,study on law of soil fertility distribution with Kriging interpolation showed that soil fertility in southeast is better than in northwest.Finally,it was found out by grey correlation analysis that the main driving factors to soil heterogeneity include natural factors annual evapotranspiration and disaster weather days,and human factors cultivated land area and chemical fertilizer wastage,and the human factors are predominant.
出处
《中国沙漠》
CSCD
北大核心
2010年第1期120-127,共8页
Journal of Desert Research
基金
国家自然科学基金项目(40961039)
新疆维吾尔自治区重点学科绿洲学项目
新疆师范大学博士后科研启动基金项目(xjnubs0901)
新疆高校青年教师科研启动基金项目(XJEDU2008S48)共同资助
