| GIS下无公害农产品产地空气和灌溉水环境预警区划分 |
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| 引用本文： | 夏永秋,于苏俊,张继,袁红.GIS下无公害农产品产地空气和灌溉水环境预警区划分[J].西南科技大学学报,2005,20(1):38-41. |
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| 作者姓名： | 夏永秋 于苏俊 张继 袁红 |
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| 作者单位： | 1. 西南交通大学环境科学与工程学院,四川,成都,610031
2. 自贡市农业局,四川,自贡,643000 |
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| 摘 要： | 将环境质量评价学、GIS(地理信息系统)和编程技术相结合，拟定了无公害农产品产地空气和灌溉水环境条件预警区划分的技术路线。基于GIS建立了自贡市部分地区预警区图层数据库，并通过嵌套编程对废气和废水浓度衰减预测和综合指数计算，矢量化地形图的缓冲分析圈定预警区范围，GIS区域求并，生成预警区成图。不满足产地空气和灌溉水环境条件的预警范围分别为75．93km^2和89.85km^2，综合影响范围129．99km^2。
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| 关 键 词： | 无公害农产品 地理信息系统 预警区 综合指数法 环境质量评价学 污染源 |
| 文章编号： | 1671-8755(2005)01-0038-04 |
| 修稿时间： | 2004年11月10 |
A GIS to Compartmentalize Early- Warning Region on Producing Area of Nuisance Free Primary Products |
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| Xia Yongqiu,Yu Sujun,Zhang Ji,Yuan Hong.A GIS to Compartmentalize Early- Warning Region on Producing Area of Nuisance Free Primary Products[J].Journal of Southwest University of Science and Technology,2005,20(1):38-41. |
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| Authors: | Xia Yongqiu Yu Sujun Zhang Ji Yuan Hong |
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| Abstract: | By the integration of Environmental Quality Assessment, GIS ( Geography Information System ) and Programming, a set of technical method is suggested to compartmentalize early - warning region failing to be in line with the quality standard on the producing area of nuisance free primary products for air and irrigating water. The research on the producing area in Zigong City included building database of earlywarning region, predicting concentration attenuation and calculating composite index by subroutine nesting, as well as buffer analysis on the basis of vectorgraph and amalgamating regions. Early - warning regions to some section in Zigong City have been created, with the area of 75. 93km2 for air early - warning region, 89. 85km2 for irrigating water and 129. 99km2 for total superposition region. |
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| Keywords: | nuisance free primary products environmental condition geography information system early -warning region composite index |
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