基于多信息的吉林省土壤墒情监测站网规划及编码

Soil moisture monitoring network planning and coding based on the multi-resources information

基于多信息开展吉林省土壤墒情监测站网规划及编码研究对揭示全省和地方农业旱情,全面、真实地反映监测区的土壤水分变化具有重要意义。以吉林省土壤墒情站网为研究对象,综合考虑农业气候、地形地貌、土壤类型、农业灌溉和易旱程度等特点,规划吉林省土壤墒情监测站网并提出一种反映多信息的墒情站网编码方式。结果表明:(1)考虑农业气候、地形,以及雨养和灌溉农业特点,进行全省墒情监测站网一级分区,共划分187个单元。(2)考虑全省主要土壤类型空间分布特点,共划分352个基本单元(最少方案);(3)通过粮食主产区,易旱区、西部平原乡镇加密,获得三级分区的471单元。(4)构建的各墒情监测站网规划分区编码形式为:行政区划+地形地貌+灌区条件+农业气候区划+土壤类型+粮食主产区+易旱区。除行政区划采用6位邮编编码外,其余属性类别若大于10,则采用两位数字进行编码,若属性类别小于10,则采用1位数字进行编码。

It is multi-information planning and coding of soil moisture monitoring network planning in Jilin Province which is of great significance to reveal the monitoring and evaluation of agricultural drought.And it is important for reflecting the soil moisture change comprehensively and truthfully.This paper takes the soil moisture station network of Jilin Province as the research object.The Soil moisture monitoring network planning and coding in Jilin is based on the characteristics of agricultural climate,topography,soil type,agricultural irrigation and drought-prone degree.The results show that:(1)the first partition of the provincial moisture monitoring network is carried out based on the characteristics of agriculture climate,topography,irrigation and rainfed agriculture.187 units were divided through the extraction and superposition of different layers of information.(2)The spatial distribution characteristics of the main soil types in the province are considered on the basis of the first partition of the soil moisture monitoring network.There are 352 units.(3)471 units of three-level sub-districts were obtained by infilling the main grain producing areas,drought-prone areas and villages and towns in the western plain.(4)The types of soil moisture monitoring stations are coded in the following forms:"Administrative Region Topographic Geomorphologic+Irrigation and Rainfed agriculture+Agricultural Climatic Zone+Soil Type+Main Grain Production Area+Drought-prone Area".In addition to the six-digit code used in the administrative division,if attribute categories are greater than 10,code is two digits.If the attribute category is less than 10,it is encoded using a 1-digit number.