%0 Journal Article
%T Evaluating soil salinization risk in typical coastal reclaimed regions in North Jiangsu Province<br>苏北海涂典型围垦区土壤盐渍化风险评估研究
%A YAO Rong-Jiang
%A YANG Jin-Song
%A CHEN Xiao-Bing
%A YU Shi-Peng
%A LI Xiao-Ming
%A <br>姚荣江
%A 杨劲松
%A 陈小兵
%A 余世鹏
%A 李晓明
%J 中国生态农业学报
%D 2010
%I 
%X Salinization is a major obstacle for effective exploitation and utilization of soil resources in coastal regions of especially North Jiangsu Province. To that end, the gray relation theory was used to assess the risk of soil salinization in the farmlands of Jinhai Farm, Dafeng County. This is a typical region in North Jiangsu Province with extensive coastal land reclamation. A practical mathematical formula was designed to determine and classify risk evaluation index in the region. Results show that soil salinity, surface soil bulk density and groundwater mineralization are the most important drivers of salinization. For the farmlands of Jinhai, the range of ecological risk value (F) is 0.12~0.60 with an average of 0.30. This indicates that the risk of soil salinization is generally high and varies significantly with location in the study area. The spatial distribution of risk of salinization is similar to the distributions of soil salinity and groundwater mineralization. Due to differences in cropping and cultivation practices, the risk of salinization in rice fields is higher than that in cotton fields. While, there hardly exists low-risk regions, high-risk and medium-risk regions pervade across the study area. Areas of high-risk, medium-risk and severe-risk respectively account for 50.11%, 49.41% and 0.48% of total study area. Areas of high-risk and medium-risk need urgent amelioration measures. The findings in this study provide the basis for quality improvements in moderate-to-low-yield farmlands. It also lays the basis for scientific amelioration and management of saline soils in coastal regions of North Jiangsu Province.
%K North Jiangsu Province
%K Coastal region
%K Saline soil amelioration
%K Salinization risk
%K Risk evaluation
%K Soil salinity
%K Soil bulk density
%K Groundwater mineralization<br>苏北
%K 海涂
%K 盐渍土壤改良
%K 盐渍化风险
%K 风险评估
%K 土壤盐分
%K 土壤容重
%K 地下水矿化度
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=7BF043D93E494A419885A168FEF594FA&yid=140ECF96957D60B2&vid=13553B2D12F347E8&iid=94C357A881DFC066&sid=E5E53C81AEB35E6C&eid=6FEA2FD9BDAB9923&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=0&reference_num=20