大安市

对大安市苏打碱土的主要碱化特征参数：土壤碱化度（ESP）、总碱度、pH等指标进行了测试分析。

The primary parameters including exchange sodium percentage ( ESP ), total alkalinity , pH and soil salt content of soda solonetz in the Da'an city were calculated .

吉林省大安市生态环境规划系统动力学仿真模型

A study on system dynamics model in eco-environment planning for Da'an of Jilin Province

3S技术支持下的盐碱化土地现状评价与发展对策研究&以吉林省西部大安市为例

Study on saline-alkalized land status quo appraising and developing countermeasures supported by 3S Techniques

基于遥感技术的大安市土地利用现状分析

Analysis of Land Use Based on Remote Sensing in Da ' an

吉林省大安市近50年土地盐碱化时空动态及成因分析

Tempo-Spatial Dynamics and Driving Factors of Saline-Alkali Land in Daan City of Jilin Province

吉林省大安市苏打碱土含盐量与电导率的关系

The relationship between salt content and electric conductivity of soda solonetz in Da'an City

大安市盐碱地造林试验初报

A report on planting trial of saline-alkali land in Da'an City , Jilin , China

基于生态足迹模型的可持续性度量研究&以吉林省大安市为例

Study on measurement of sustainable development based on ecological footprint model & a case study on Da'an County in Jilin Province

以吉林省西部土壤退化典型地区大安市和长岭县为例，研究、分析了该地区土壤退化特征及机理。

The characteristics and mechanism of soil degradation were analyzed , as the case study of Da'an city and Changling county in the west part of Jilin province .

针对吉林省大安市发展现状和存在的严重生态环境问题，运用生态足迹模型，采用多源数据，首次对大安市生态环境的可持续发展状况进行了定量研究；

As to the development condition and the serious environmental problems , the thesis firstly made a quantitative research on the sustainable development by using ecological footprint model and polygenetic data .

研究表明，2001年大安市的生态需求大于生态供给，生态呈现供不应求的局面，人均生态赤字为0.56hm2，处于弱不可持续发展状态。

The study showed that the ecological demand was larger than ecological supply and the city was in the weakly unsustainable state with ecological deficit of 0.56 hectares per capita in 2001 .

碱斑地分离度、分维数逐渐减小，面积不断扩大，占大安市总面积比由原来的23.3%上升到32.4%。

Compared to 1986 , the landscape isolation and the fractal dimension of alkaline spot were decreasing , and the ratio of alkaline land was increasing from 23.3 % to 32.4 % .

本文以吉林省西部大安市为例，研究近20年来我国北方农牧交错带县域农业景观格局的变化情况。

Taken Da'an city in the west of Jilin Province as a case , this article studies the landscape pattern of a county in the edge of arg-herd in the past 20 years .

其调查结果表明大安市高中生具有一定的环境意识基础，但是由于生活环境和教育背景不同，导致了对环境保护的态度不同。

Da , an its findings showed that high school students have some basic environmental awareness , but due to different living environments and educational background , resulting in different attitudes to environmental protection .

测试了吉林省大安市苏打碱土区67、2030和6070m3种深度地下水的基本化学特征，对利用地下水灌溉可能引起的土壤盐化、碱化和盐碱化问题及其灌溉适宜性进行了评价。

Chemical properties of groundwaters ( 6-7,20-30,60-70 m in depths ) at sodic soil areas in Da ′ an City , Jilin Province were measured and soil salinization risk of using the groundwaters for irrigation was analyzed .

分别测定了吉林省大安市苏打碱土含盐量与电导率以及地下水含盐量与电导率，分析了含盐量与电导率的关系。

Based on the measurement of salt content and electrical conductivity in soda solonetz soil as well as in groundwater in Da'an City , Jilin Province , the relationship between the salt content and electric conductivity was determined .

本文以大安市高中生作为调研对象，通过问卷对大安市部分高中生进行调查，了解当前大安市高中生存在的环境教育问题。

In this paper , Da , an high school students as research objects , some high school students through a questionnaire survey of Da , an , Da , an high school students to understand the current existing environmental education .

结果表明，大安市草地退化严重，低、中、高覆盖度草地均有不同程度的退化，退化面积分别为22.06%、45.01%、62.25%，高覆盖度草地退化最严重；

Low , moderate and high coverage grasslands are all degraded with various degrees , the area percentage of grassland degradation is 22.06 % , 45.01 % , 62.25 % respectively , and degradation of high coverage grasslands is most serious .

利用遥感技术结合野外调查和室内土壤化学分析，对吉林省大安市草原土壤盐渍化现状进行了研究，通过定量与定性分析，对大安草原土壤盐渍化进行了分类。

The research investigated the current situations of grassland soil salinity in Da ′ an county by remote sensing technique and field investigation , and indoor soil chemical analysis . By quantitative and qualitative analysis , it classified soil salinization of Da ′ an grassland .