克里雅绿洲地下水埋深时空变化对土壤盐分分布的影响 |
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引用本文: | 努尔麦麦提江·吾布里卡斯穆,塔西甫拉提·特依拜,阿不都拉·阿不力孜,邓煜霖,买买提·沙吾提,张飞.克里雅绿洲地下水埋深时空变化对土壤盐分分布的影响[J].节水灌溉,2016(5). |
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作者姓名: | 努尔麦麦提江·吾布里卡斯穆 塔西甫拉提·特依拜 阿不都拉·阿不力孜 邓煜霖 买买提·沙吾提 张飞 |
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作者单位: | 新疆大学资源与环境科学学院,乌鲁木齐 830046; 绿洲生态教育部重点实验室,乌鲁木齐 830046 |
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基金项目: | 国家自然科学基金(U1138303),新疆于田绿洲土壤盐渍化风险遥感定量评估研究(41561089),教育部长江学者和创新团队(IRT1180)。 |
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摘 要: | 利用实测和室内试验获得的数据,采用经典统计学和地质统计学方法,结合 GIS 技术,分析了新疆克里雅绿洲地下水埋深时空变化对土壤盐分分布的影响。研究结果表明:克里雅绿洲春、夏、秋3个季节地下水埋深和土壤EC值预测精度误差均为10%左右;夏天地下水埋深最大,为13.1 m,春天最小,一年内埋深波动可达6 m;地下水埋深大致形成了南深北浅的空间分布特征;春季土壤EC值连续性相对差,夏季0~10 cm土壤EC值相对高而且连续性最好,土壤盐分最高值出现在绿洲中北部:土壤盐分受地下水埋深影响显著,地下水埋深从东南部到北部呈减小趋势,土壤盐分随地下水埋深的减小而增加。因此,应采取适合克里雅绿洲水资源状况的管理措施,控制地下水埋深,防止土壤盐渍化的进一步加剧。
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关 键 词: | 地下水埋深 时空变化 土壤盐分 克里雅绿洲 |
The Effects of Spatial and Temporal Distribution of Groundwater on the Soil Salinity in Keriya Oasis in Xinj iang |
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Abstract: | The spatiotemporal variation of groundwater depth and its impact on the soil salinity distribution in the Keriya Oasis,Xin-jiang,were analyzed using geostatistics and GIS technology based on the groundwater and soil data obtained from field investigation and laboratory test.The results showed that:the predicted mean error of groundwater and soil EC value were 10% in the spring, summer and autumn;The groundwater depth was in the maximum value in summer and the minimum value in spring,and the groundwater depth fluctuated within a year up to 6m;The groundwater depth of oasis showed the distribution features of deep in south and shallow in north;the continuity of soil EC value was relatively bad in spring and relatively good in the 0~10 cm depth and higher in summer,the highest soil EC values were in the center and north of oasis;the soil salinity was significantly affected by the groundwater depth with the trend of groundwater depth decreasing from southeast to north and soil salinity increasing with the de-crease of groundwater.So the reasonable management measures suitable for the oasis water situation should be taken to control the groundwater depth and prevent the exacerbation of soil salinity. |
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Keywords: | groundwater depth soil salinity temporal and spatial distribution Keriya oasis |
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