坝上地区土地质量地球化学评估:以河北省尚义县为例  

Geochemical Evaluation on Land Quality in Bashang Plateau:Taking Shangyi County of Hebei Province as an Example

作　　者：魏静 李宏亮 罗建美[2] 李海刚 张婧[4,5] 

机构地区：[1]河北省地质调查院,河北石家庄050081 [2]石家庄经济学院土地资源与城乡规划学院,河北石家庄050031 [3]昌黎县土地开发整理服务中心,河北秦皇岛066600 [4]河北省气象与生态环境实验室,河北石家庄050021 [5]河北省气候中心,河北石家庄050021

出　　处：《现代地质》2014年第3期531-536,共6页Geoscience

基　　金：河北省地质矿产勘查开发局扶贫项目(冀地地审【2009】27号)

摘　　要：利用层次分析法和隶属函数建立土地质量地球化学评估模型,对河北省尚义县坝上地区土地质量进行地球化学评估。结果显示:评估区土地质量整体良好,土壤一等面积比例为22.65%,营养元素和健康元素含量均较高,二等面积比例为40.65%,三等面积比例为6.80%,F-、Cl-含量高,盐碱化严重;灌溉水一级面积比例为64.30%,二级面积比例为35.70%,影响灌溉水级别划分的主要指标为F-和Cl-,超标比例分别为5.70%和34.30%;土地质量二等一级(21)和一等一级(11)所占比例较大,分别为40.65%和22.65%,三等二级(32)和三等一级(31)所占比例较小,分别为1.60%和6.80%。The land quality in Bashang plateau of Shangyi County, Hebei Province is evaluated on geochemistry using land quality geochemical assessment model which is built using the analytic hierarchy process and membership functions. The results indicate that the land quality of assessment area is in good condition. The soil of the first quality grade is rich in nutrient elements and health indicators which accounts for 22.65% in the whole region, the proportion of second quality grade area is 40.65 %, the proportion of third quality grade area with high of F^- and Cl^- is 6. 80% , which has serious soda saline land. The irrigation water of the first and second quality grade accounts for 64.30% and 35.70%. The main influencing factors of irrigate water division are F^- and Cl^- , the over standard proportion of which are 5.70% and 34. 30%. The 21 and 11 in geochemical assessment class and grade have a larger proportion, which accounts for 40.65% and 22.65% , relatively, the 32 and 31 with lower rate accounts for 1.60% and 6. 80%.

关 键 词：土地质量 地球化学评估 等级 坝上地区 尚义县 河北 

分 类 号：P595[天文地球—地球化学] X142[天文地球—地质学]