以地理信息系统为基础的农业地质环境研究  

Agricultural Geological Environment Monitoring Based on Geographic Information System

作　　者：胡品[1] 

机构地区：[1]东华理工大学测绘工程学院,南昌330000

出　　处：《湖北农业科学》2017年第7期1245-1249,共5页Hubei Agricultural Sciences

摘　　要：根据地理信息系统(GIS)制图方法对四川省内江市双桥乡农业地质环境进行分析。结果表明,双桥乡土壤Cr、Cu、Hg、Pb、As元素含量较低,大部分符合地质环境一级标准;Zn、Ni、Cd元素含量较高,但也符合地质环境质量二级标准。通过叠加法将8种重金属元素综合考虑得到双桥乡绝大部分土壤区域为Ⅱ类土壤,所占比例在97%左右。对土壤肥力分析可知,双桥乡土壤全钾含量富足,有机质碳与全氮含量水平一般,土壤全磷含量整体水平偏低,在种植水稻过程中需多施加含磷化肥。The agricultural geological environment of Shuangqiao township, Neijiang city, Sichuan province was analyzed by the geographic information system （GIS） mapping method. The results showed that the content of Cr, Cu, Hg, Pb, As in study area was low, and the most soil belonged to the first standards of geological enviromental quality; the contents of Zn, Ni and Cd was relative high, but kept within the secondary standards. The results of comprehensive assessment on soil heavy metal by the superposition of 8 heavy metals showed that the most soil area of Shuangqiao township belonged to grade II soil, the proportion was about 97%. The analysis results of soil fertility indicated that soil total potassium content was rich, organic carbon and total nitrogen content was normal level, and total phosphorus content was low, so phosphorus fertilizer should be applied more during rice cultivation.

关 键 词：地理信息系统 农业地质环境 重金属元素 

分 类 号：X141[环境科学与工程—环境科学]