摘要
了解土壤盐分平衡情势对于预警土壤盐渍化和指导农业生态环境调控具有实际意义。从地下水、气候、土壤理化性质和土壤初始盐源状况四方面考虑,构建了半干旱半湿润地区土壤盐分平衡情势的评价指标体系;采用综合指数法,以环渤海低平原区为典型区进行了评价应用。评价结果表明:环渤海低平原区土壤盐分平衡情势"良"级区分布面积占总面积的0.8%,"中"级区26.8%,"差"级区58.9%,"劣"级区13.5%,总体维持土壤盐分平衡的能力较弱。通过效验,评级结果与实际情况基本吻合,证明了评价方法的适用性。
It is of practical significance to understand the soil salinity balance situation for the early warning of salinization and the guidance of agro-ecological environment regulation.Based on the four aspects of groundwater,climate,soil physical and chemical properties,an evaluating index system of the situation and application in semi-dry and semi-humid area has been set up and applied in low plain areas of Bohai Sea,as a typical zone（combined with a comprehensive index method）.The results show that the area of ＂good＂ class accounted for 0.8% of the total,and the area of ＂fair＂,＂poor＂ and ＂bad＂ classes accounted 26.8%,59.0% and 13.5% respectively,so it is hard to maintain the balance of soil salinity in this area.The evaluation result is coincident with the actual situation which show that the method is applicable in the low plain area of Bohai Sea.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2013年第3期939-944,共6页
Journal of Jilin University：Earth Science Edition
基金
国家自然科学基金项目(41172214)
国家"973"计划项目(2010CB28805)
国家自然科学青年基金项目(51209090)
关键词
地下水
土壤理化性质
盐分平衡
评价体系
环渤海低平原
groundwater
soil physical and chemical properties
salt balance
evaluation system
low plain around the Bohai Sea
