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土壤质量的评价
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  soil quality evaluation
     By soil quality evaluation about this area, it indicates the effect of restoration improvement is very different under different land usage mode: bush forest land >natural meadow >farmland >artificial meadow>orchard.
     通过对研究区域土壤质量的评价,充分表明了土地利用方式不同对于土壤的改良效果存在明显差别灌木林地>天然草地>农地>人工草地>果园。
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  “土壤质量的评价”译为未确定词的双语例句
     Spatial distribution and quantitative evaluation of soil fertility quality in Jintan county, Jiangsu province, have been studied through combinating the methods of statistics, geostatistics and GIS with the changed Nemoro formula as evaluation model.
     用修改后的内梅罗公式作为土壤质量的评价模型,将传统的统计方法与地统计学方法及GIS技术相结合,研究了金坛市土壤质量的空间分异规律,对金坛市土壤质量进行了定量化的评价。
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     Based on the SOTER database and some FAO frameworks, a soil quality indexing system was established, and some evaluation results were presented for some selected GIS photo spot of tropical cropland in Hainan island. With connection to the spatial database, this system could perform the output of evaluation results.
     在海南岛SOTER数据库基础上 ,结合联合国有关原则与规定 ,选取表征土壤质量的若干指标项目组成体系 ,在GIS环境中对图斑的土壤质量进行评价 ,并将评价等级指数与空间数据库相连 ,根据用户需求将土壤质量的评价结果输出 ,结果得到当地有关专家的认可 .
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     They have also discussed indexes for evaluating soil quality in facility agriculture and analyzed and brought forwards issues that need to be further studied in future.
     同时讨论了设施土壤质量的评价指标,并分析提出了今后设施农业土壤需进一步研究的问题。
短句来源
     In this paper,the advanced researches for the concept of soil quality, the relationship between soil quality and sustainable agriculture, sustainable environment, and its assessment methods and also the indicators were reviewed.
     本文介绍和分析了土壤质量的概念及其与持续农业、持续环境的关系、土壤质量的评价方法、评价指标等方面的最新国际研究进展。
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  相似匹配句对
     Soil quality and its evaluation.
     土壤质量及其评价
短句来源
     Evaluation on Soil Quality by Ecotoxicological Method
     土壤质量生态毒理学评价
短句来源
     Current Advance on Soil Quality Evaluation
     土壤质量评价研究进展
短句来源
     Review on methods of soil quality evaluation
     土壤质量评价方法述评
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     Assessment Methods for Soil Quality:a Review
     土壤质量评价方法进展
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  soil quality evaluation
Soil quality evaluation often includes a large-scale and multiple-attribute field survey.
      


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。

The forests in this area were severely ruined by reason of history. Accordingly,what mainly needs to be done is to plant on the desert land and to afforest on the barren hills and the wasteland. However,the current evaluation methods of soils are hardly fit for the local conditions. The characteristic of this kind being taken into consideration, evaluation object was completely confined to the soil itself. On the basis of a great deal of investigation and soil analysis, 10 items of soil texture, bulk density,...

The forests in this area were severely ruined by reason of history. Accordingly,what mainly needs to be done is to plant on the desert land and to afforest on the barren hills and the wasteland. However,the current evaluation methods of soils are hardly fit for the local conditions. The characteristic of this kind being taken into consideration, evaluation object was completely confined to the soil itself. On the basis of a great deal of investigation and soil analysis, 10 items of soil texture, bulk density, moisture, gravel content, soil thichness,.O. M. , total N,available P, pH .md calcium carbonate were chosen as evaluation factors on the principle of the combination of an all-round way with major points. And these factors were divided into three kinds of different characteristics, i. e. physica(from the 1st to the 5th) , nutritive (from the 6th to the 8th) ,and chemical (from the 9th to the 10th) in accordance with different properties.Following these,a group of experts was invited to conduct the index gradation and the weight distribution of evaluation factors. And then an expert system was established through a certain technical treatment. Based on the fuzzy mathematics principle,the soil quality was comprehensively judged.To sum up all the present evaluation methods of soils, there are 2 types; the gradation method and the score method. The gradation method is not of qualitive idea. The score method has obvious subjectivity. In order to overcome these shortcomings the fuzzy comprehensive judgement technique was applied to the soil evaluation. J. It uses the index system performed by the experts, which can strengthen objectivity of the results;2. The results were directly acquired by means of a series of operation; 3. Because the result was expressed in a vector, it was more entire than the score method's result which can be expressed by only one numerical value.

根据川江流域防护林区内森林地、宜林地并存,且宜林地占有相当比重的特点,将评价对象仅限定于土壤本身,并选取土壤质地等十项可实测土壤指标为评价因素。在此基础上,邀请众多专家进行土壤质量的指标强度分级和因素权重分配。最后采用模糊数学的综合评判法对土壤质量作出评价。评价结果表明,此套方法对川江流域防护林区土壤质量评价是较为合理的,并较其他方法更具优越性。

Farm soil quality appraise is the prerequisite to realize the system of rewards and punisher- ents for using farm.For the farm soft quality is evaluated on tracts at present,the three grades of basic soil classification with factor overlap methed—soil species,soil variety and tract—were u- tilized to classify the soil types under the soil species in Taigu county.The linear lock was formed between the surface features on aerial photographs and the homologues on 1/10000 topographic maps and the 1/5000 or 1/2500...

Farm soil quality appraise is the prerequisite to realize the system of rewards and punisher- ents for using farm.For the farm soft quality is evaluated on tracts at present,the three grades of basic soil classification with factor overlap methed—soil species,soil variety and tract—were u- tilized to classify the soil types under the soil species in Taigu county.The linear lock was formed between the surface features on aerial photographs and the homologues on 1/10000 topographic maps and the 1/5000 or 1/2500 or 1/10000 topographic tract maps and soil quality grade maps were drawn with similar perspective net—check method.The topographic tract maps and soil quality grade maps can be used as the basis of reward or punishment for using field.

农田土壤质量评价是耕地地力升降实行奖惩使用的前提。由于当前耕地土壤质量评价是以地块、地片为基础进行的。为适应这一需要,我们在第二次全国土壤普查的基础上,以太谷县为试点,将土壤普查土壤分类中之土种以下通过因素重迭法续分为土种—变种—土片三级基层分类;同时以1/万地形图作底图,用航片与地形图上对应明显地物点分别建立相应菱形锁,用相似透视网格法按成图比例尺转绘成(1/5000、1/2500或1/万)地形地块(片)及土壤质量等级图、作为农田地力升降奖惩的图幅依据。

 
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