引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 230次   下载 101 本文二维码信息
码上扫一扫!
分享到: 微信 更多
基于GIS的南京市溧水区富硒土地资源开发利用研究
郑先迪, 刘友兆
南京农业大学 公共管理学院, 江苏 南京 210095
摘要:
[目的]对南京市溧水区富硒土地资源开发利用进行研究,为发展该区特色富硒农产品产业提供科学参考。[方法]在对溧水全区土壤采样并测试土壤化学性质的基础上,采用ArcGIS对土壤硒含量进行地统计和插值分析,选取最合适的拟合模型和插值方法,根据样点数据预测整个研究区土壤含硒情况,综合文献资料和溧水实际情况将富硒土地分级,明确富硒土地空间分布,结合土壤酸碱度划分出适宜种植富硒农产品的区域及种类。[结果]溧水区约有4.25%的富硒土地资源,呈块状或点状分布于各个乡镇,可以综合土壤酸碱度等因素开发作为富硒农产品的种植地。[结论]普通克里金方法中高斯模型可以很好地拟合出溧水区土壤富硒情况,并且研究区的富硒土地资源具有极大的开发空间和利用价值,需要进行合理规划,为开发区域特色农产品市场提供依据。
关键词:    富硒农产品  土壤酸碱度  南京市溧水区
DOI:10.13961/j.cnki.stbctb.2018.04.045
分类号:
基金项目:江苏省国土资源科技项目“农村土地整治生态风险调控研究”(2015005);南京地质调查中心课题(宁地调合同[2015]09号D-78);中央高校基本科研业务费专项资金项目(KJQN201567)
Exploitation and Utilization of Selenium Rich Land Resources in Lishui District of Nanjing City Based on GIS
ZHENG Xiandi, LIU Youzhao
College of Public Administration, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
Abstract:
[Objective] The development and utilization of selenium rich land resources in Lishui District of Nanjing City were studied in order to provide scientific reference for developing local characteristic selenium enriched agricultural products industry.[Methods] On the basis of sampling and testing of soil chemical properties at Lishui Distriat, analysis of statistics and interpolation of soil selenium content by ArcGIS, selecting the most appropriate model and interpolation method, according to the prediction of the soil selenium sample point data, literature data and the actual situation of Lishui District, selenium enriched land was graded to understand its selenium spatial distribution. Areas that are suitable for planting selenium-rich agriculture products and the species were maped and listed.[Results] There is approximately 4.25% of the land resource of selenium rich in Lishui District, which distributed in townships in the form of block or spot, which can be developed as the planting land of the selenium rich agricultural products by combining the soil acidity and alkalinity.[Conclusion] The Gauss model in the common Kriging method can well fit the situation of soil rich selenium in Lishui District, and the selenium rich land resources in the study area have great development space and utilization value. It is necessary to make rational planning and provide basis for the development of regional characteristric agricultural products market.
Key words:  selenium  selenium rich agricultural products  soil acidity and alkalinity  Lishui District of Nanjing City