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土壤资源评价     
相关语句
  soil resource evaluation
     The Soil Resource Evaluation of Daian District
     大连地区土壤资源评价
短句来源
     STUDY ON CAC METHODS FOR SOIL RESOURCE EVALUATION
     土壤资源评价的机助制图方法研究
短句来源
     Meanwhile, it summarizes the method and development of soil resource evaluation evolved on the basis of soil classification and points out its trend in arid zone.
     评述了在土壤分类研究基础上发展起来的土壤资源评价方法和现状,指出了未来干旱区土壤资源评价研究趋势.
短句来源
  soil resoure evaluation
     Pring Research the Soil Resoure Evaluation on Chongming Island
     崇明岛土壤资源评价初探
短句来源
  evaluation of soil resources
     Evaluation of Soil Resources of Huaibei Plain in Anhui
     安徽省淮北平原土壤资源评价
短句来源
     It is necessary to create a database for the evaluation of soil resources.
     土壤资源评价首先必须建立相应的数据库。
短句来源
  soil resources evaluation
     Observing the research present situation of soil resources evaluation and land use plan in both and abroad, analytical method, theory and research means of soil resources evaluation had been studied thoroughly, some achievements were gained and they were put into use in practice extensively.
     纵观国内外土壤资源评价的研究现状,前人在分析方法,理论和研究手段等各方面都进行了深入的研究,并取得了一定的成绩,在实践中也得到了广泛的应用,但仍存在着某些方面的不足,主要表现在:以往的评价大多是以土地类型作为评价基本单位,很难将结果落实在具体的土块之上;
短句来源
     There is a close forming relation between soil ecology characteristics and geological environment. To divide the regions (or inferior region) of soil ecology are based on geological structure and landform and to divide the slices of soil ecology are based on soil types, soil mother's body, micro topography, soil resources evaluation grades and society economy condition. Hence,to establish a more rank order and systematized information warehous,it will supply a reliable basis for optimize land use structure.
     土壤生态特征与地质环境之间具有密切的成生联系 ,以地质构造和地貌条件划分土壤生态区、亚区 ,以土壤类型、母质、微地形、土壤资源评价等级 ,社会经济条件划分土壤生态片 ,从而建立了多层次、系统化的土壤生态信息库 ,为优化土地利用结构提供了可靠的依据。
短句来源

 

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    In this paper, after the brief introducing of soil in Huai Bei plain, we first make overall evaluation of the quality of the soil great group and sub-group in the whole area, and then evaluate the quality of major soil species of cultivated soil n Huai Bei plain.

    本文在简介淮北平原土壤的基础上,首先对全区的土类和亚类进行总的质量评价。对资源质量评价中项目选择、加权因子的确定、等级的划分进行了初步讨论。项目选择从环境因素、土壤性质、利用现状三方面考虑,其中土壤性质所占比例最大(反映区域土壤资源评价的特点)。重要项目指数分级细,加权因子指数范围相应扩大,障碍因素的指数为负数,最后将各分项指数相加,得出各类土壤质量评价总指数,并进行归并排列。而后,对淮北主要耕作土壤的土种进行质量评价,以土壤生产力表示土壤质量的综合评价,采取了以单项评价指数相乘的方式得出不同土种生产力指数,并结合作物对土壤的要求,将淮北主要耕作土壤的土种分为六个等级。

    SUMMARY This writing make a study of the soil resource evaluation principle. Evaluationfaclor and system in xin-jiang dry warm-temprate zone, our purpose is thatthe soil resurce be used in production of forming foresting and stockbreeding.

    本文讨论了新疆干旱暖温带土壤资源评价原则、评价因素、评价系统,以利合理利用本区土壤资源,保护农林牧业生产.

    The article deals with the soil resource evaluation of Dalian districet tas■d on the data acquired in The Soil General Investigation. The evaluation system includes two catagories: Class: indication of the properties,suitability,capability,using value of soil and the difficulty and easiness of soil improving; Type: indication of the types of factors which limit the soil properties ina class. The basic unit of soil resource evaluation is soil species and a total of 204 soil species are evaluated.Three principles...

    The article deals with the soil resource evaluation of Dalian districet tas■d on the data acquired in The Soil General Investigation. The evaluation system includes two catagories: Class: indication of the properties,suitability,capability,using value of soil and the difficulty and easiness of soil improving; Type: indication of the types of factors which limit the soil properties ina class. The basic unit of soil resource evaluation is soil species and a total of 204 soil species are evaluated.Three principles of selection of factors of soil resource evaluation are given.The author thinks that theFroperties And the important environ mental factors of soil should be the basis of soil resources evaluation.The weight of eachfactor of evaluation is decided according to the experience and correlation cofficient method.Finally,the weight is adjusted by the computer. Fuzzy cluster analysis method is used in the soil resource evaluation and the result of evaluation indicates the superity of fuzzy cluster analysis in soil resource evaluation.The variation rules of soil resource quality and three characteristics of soil resource of Dalian district are revealed.the author thinks that the quality of the soil of Dalian district is mainly decided by soil factors based on topography.

    本文在提出大连地区土壤资源评价的理论和方法的基础上,依据第二次土壤普查成果,采用模糊聚类的方法,对大连地区的土壤资源进行了分等划级。评价采用等和型两级制,采用定性与定量相结合的方法选取评价因素和确定各评价因素的权值。根据模糊聚类结果,将大连地区土壤资源划分为8个土壤质量等和6个限制型,揭示了大连地区土壤质量的递变规律,并提出了加速土壤正向演化的措施。

     
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