富硒土地开发利用评价体系的建立及应用——以西安市临潼区为例
Establishment and application of evaluation system for development and utilization of selenium-rich land:A case study in Lintong District,Xi'an
任蕊 1晁旭 2张立君 3支倩 1徐翠玲 4凌丹丹 1马宇梅 1陈继平 1乔新星 1杜少喜1
作者信息
- 1. 陕西省水工环地质调查中心,陕西 西安 710068
- 2. 陕西省地质调查规划研究中心(陕西省地质勘查基金中心),陕西 西安 710068
- 3. 中国富硒产业研究院,陕西 安康 725000
- 4. 长安大学 地质工程与测绘学院,陕西 西安 710054
- 折叠
摘要
[研究目的]人体日常摄入的硒主要通过食物链源于土壤,而中国是富硒土地资源相对匮乏的国家,面对有限且珍贵的富硒土地资源,亟需构建科学合理的富硒土地开发利用评价体系,为特色土地资源的高效开发提供依据.[研究方法]本文以陕西关中地区为研究区,在土地质量地球化学调查成果基础上,融合反映农用地自然条件、基础设施水平的评价指标,构建了涵盖立地条件、土壤硒含量、理化性质、土壤质量和土地管理等 5大类 12项指标的关中地区富硒土地开发利用评价体系.同时以西安市临潼区为例,开展了临潼区富硒土地开发利用适宜性评价.[研究结果]将临潼区土地划分为高度适宜区、适宜区、较不适宜区、不适宜区和极不适宜区共 5个等级,其中高度适宜开发区及适宜区开发面积共 248.35 km2,主要分布在临潼区北部的新市乡、栎阳镇、徐杨乡、相桥镇及中东部的何寨镇.基于不同适宜评价区内小麦硒含量及富硒比例,发现其富硒土地适宜性与小麦富硒程度高度耦合.[结论]说明构建的富硒土地开发利用评价体系对富硒土地资源的开发利用具有较好的科学指导价值及重要的示范意义.
Abstract
This paper is the result of agricultural geological survey engineering.[Objective]Selenium(Se)intake in the human body primarily originates from the food chain,mostly derived from soil.The research aims to establish a scientific and rational evaluation system for the development and utilization of selenium-rich land due to the limited and valuable selenium-enriched soil resources in China.[Methods]This study focuses on the Guanzhong region,particularly Lintong District,integrating geophysical survey findings with assessment criteria reflecting agricultural land's natural conditions and infrastructure levels.The developed evaluation system encompasses five major categories and twelve indicators,including site conditions,soil selenium content,physicochemical properties,soil quality,and land management.Moreover,suitability assessment for selenium-rich land development and utilization was conducted in Lintong District as a case study.[Results]The land in Lintong District was categorized into five levels:highly suitable,suitable,moderately unsuitable,unsuitable,and highly unsuitable.The highly suitable and suitable development areas covered 248.35 km2,mainly distributed in the northern areas of Lintong District,as Xinshi Town,Liyang Town,Xuyang Town,Xiangqiao Town,and the central-eastern parts of Hezhai Town.Analysis of wheat Se content and Se enrichment ratios within different suitability evaluation zones revealed a strong correlation between the suitability of selenium-rich land and the degree of selenium enrichment in wheat.[Conclusions]The developed evaluation system demonstrates significant scientific guidance and exemplary significance for the utilization of selenium-rich land resources.It underscores the need for a systematic approach to efficiently develop and utilize these resources,emphasizing the critical link between soil suitability and the selenium enrichment of agricultural produce.
关键词
富硒土地/开发利用/评价体系/农业地质调查工程/临潼区/关中地区Key words
selenium-rich land/development and utilization/evaluation system/agricultural geological survey engineering/Lintong District/Guanzhong region引用本文复制引用
基金项目
陕西省公益性地质调查项目(202201)
陕西省公益性地质调查项目(20180307)
出版年
2024
国家科技期刊平台
NSTL
万方数据