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land unit
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  土地单元
     2.Soil unit map, climate zones and land unit map of Pujiang were produced using GIS technology and expert knowledge, based the data collected.
     2、通过对有关数据进行分析、整理,充分吸纳相关专家知识后,运用GIS技术建立浦江县土壤单元图、气候分区图和土地单元图。
短句来源
     A database of (TechnoGIN-PuJiang-TP-3) for the TechnoGIN was set up, comprising various components of land use systems, such as land conditions (land unit), soil properties, crop type, yield level, technology level, nutrient (NPK) use efficiency, prices of agricultural products and fertilizers/biocides, inputs of fertilizers, biocides and irrigation water, etc.
     在对各土地单元适宜的农业系统详细分析的基础上建立了浦江县TechnoGIN数据库(TechnoGIN-PuJiang-TP-3)。 该数据库由Technology表、Crop表、LUT表、LMT表、Nutrient表、Biocides表、Efficiency表、Fertiliser表、Currencies表等部分组成。
短句来源
     taking the land unit of cities towns as a sample and affecting value of factors is integrated to the land unit. Using average square analysis we test the difference of land unit gather and determine land level. Furthermore we look for the optimal fixed level plan by iteration calculation of statistics K, and describes iteration screening model and example.
     在城镇土地分等定级一般原理和方法的基础上,以城镇土地单元为样本,将所有对城镇土地发生作用的因素、因子的作用分值统一到评价单元,采用方差分析方法检验各土地单元分值子集合是否存在重要差别,确定城镇土地级别,并通过统计量 K 值的迭代计算,寻找城镇土地定级最佳方案,并给出迭代筛选模型和实际算例,可使城镇土地定级成果更加准确合理。
短句来源
     Based on the analysis of nutrient coefficient in the fruit orchards by TechnoGIN in Pujiang county, we have set up five land units and six technology levels. The analysis revealed that: firstly, fruit crops have different demanding level to N/P/K at different technology level in different land unit;
     以浦江县水果作物生产调查数据为基础,建立5个土地单元,6个技术水平,产生TechnoGIN效应如下:1)不同土地单元、不同技术水平下,果树作物所需求的N、P、K养分并不相同;
短句来源
     secondly, the quantity of the leaching and the vaporization by the fruit trees could be calculated by using TechnoGIN, which were different at different technology levels in various land unit.
     2)TechnoGIN计算出,不同土地单元,不同技术水平,果树作物产生淋溶和气化量也不同,产量高,N的需求量大;
短句来源
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  地块单元
     Land unit is the basic unit in soil erosion management and ecological environment construction. To understand the roles of water and sand movement among the land units is significant in spatial management of small basins. The land unit is defined as a piece of land with homogeneous geographic characteristics.
     地块单元是小流域生态环境建设与管理的基本空间单元 ,探讨地块尺度的水沙运移关系对强化小流域空间管理具有显著的理论与实践意义。
短句来源
  “land unit”译为未确定词的双语例句
     The results showed that the effect of interplanting Castanopsis fissa was the best, its average dbh reached 15.4cm, the average tree height reached 16.4m, stocking amount reached 171.70 m~3.hm~(-2) at the age of 15, and increased the forest wood stocking of forest land unit area.
     在三明莘口教学林场1959年营造的马尾松人工林内,分别于1984、1990、1991年套种阔叶树研究结果表明:马尾松林冠下套种闽粤栲效果最好,15年生时,闽粤栲平均胸径达15.4 cm,平均树高达16.4 m,蓄积达到171.70 m3.hm-2,显著地增加了林地单位面积的林木蓄积量。
短句来源
     Reference land unit method of arable land evaluation at county level
     县域耕地的样地法评价
短句来源
     (2) According to the purpose of the land evaluation for digital agriculture the methods of dividing land unit and establishing the norm system of the land evaluation for digital agriculture are explored, and the methods of the integrated assessment on land quality and of diagnosing the richness of the factors affecting land quality are also discussed.
     (2) 根据为数字农业服务的土地评价研究的目的,探讨了为数字农业服务的土地评价单元划分及指标体系建立的方法,以及土地质量综合评价和土地影响因素丰度诊断的方法。
短句来源
     The main content of this thesis is as follows: (1) The existed methods and models used in land evaluation are collected and reviewed, the present situation and development trend of land evaluation in China and abroad are introduced, and the methods to divide land unit and norm system of land evaluation are also presented and discussed;
     本文的主要内容如下:(1) 在收集和整理现有土地评价方法和模型的基础上,对国内外土地评价研究的现状和发展趋势作了评述,同时总结和分析了土地评价单元划分和指标体系建立的方法;
短句来源
     Soil erosion and sustainable use map of sloping cultivated land is a special map of showing comprehensively the status of soil erosion of every sloping cultivated land unit and its sustainable use in the northeast mountain region of Yunnan province.
     坡耕地水土流失与可持续利用图是综合表示滇东北山区各个坡耕地单元的水土流失状况及其可持续利用的专题地图。
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  land unit
Ordination techniques consistently indicated that land unit groups categorised using edaphic factors corresponded to those categorised using response patterns.
      
Changes in vegetation and soil properties at increasing distances from a camp or water point within each land unit were into three different patterns.
      
Hierarchical analysis was used to test the hypothesis that a land unit's edaphic factors could explain the differences in vegetation responses to grazing.
      
These changes, with the complex, changing patterns of each land unit, could be explained by differences in accessibility from the village and variations in the topography, as well as land ownership of the land units.
      
We compared the spatial features, patterns of land use and landscape diversities of each land unit, defined in terms of both their natural and man-made conditions for the year 1970, to those of 1995.
      
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In this article, taking the Heilongjiang province and Hulunbeier League as a example, some concepts on land study, such as land, land classlification as well as its rule of distribution are discussed.Land or terrain is a physical complex.It is an end product acted by whole physical factors, including climate, landform, hydrography, soil, vegetation etc. It includes also past and present human activities and their impacts upon environment.Based upon specific natural conditions of the Heilongjiang province and...

In this article, taking the Heilongjiang province and Hulunbeier League as a example, some concepts on land study, such as land, land classlification as well as its rule of distribution are discussed.Land or terrain is a physical complex.It is an end product acted by whole physical factors, including climate, landform, hydrography, soil, vegetation etc. It includes also past and present human activities and their impacts upon environment.Based upon specific natural conditions of the Heilongjiang province and Hulunbe-cr League, principles for classifying land types are given. A hierarchical scheme for landclassification in the region are introduced. The first-level land unit is named "great land group" which approximates "land system" as called by Australian CSIRO. The second-level is named "land type" , and the third-level, land association that only be studied and mappad in large-scale maps (usually larger than 1 : 50000).The Heilongjiang province and Hulunbeier League are located at 42°23'N throug-53°34'N, with a total area of about 710,000 sq km. It is situated mostly in the nor them part of the temperate zone. Its northernmost part and areas more than 800-1000m. above-sea-level belong to the cold-temperate zone. By taking landform, soil and vegetation as chief criteria for classification, 18 great land groups and 71 land types are identified.Horizontal and vertical distribution, as well as structure of land types are also discussed.

本文就土地研究的几个主要概念,即土地、土地分类、土地分级作了简要讨论,并结合黑龙江省及呼伦贝尔盟的具体条件,对为农、林、牧业服务的土地分类原则进行了初步探讨,还拟订了该区土地分级系统——土地类和土地型,及适合于大比例尺制图的土地组。在此基础上,将全区分为18个土地类、71个土地型。 文章还从水平带性、垂直带性和土地结构三个方面,介绍了该区土地类型分布的一般规律。

The article attempts to analyse from the besic factors of differential types of land in Inner Mongolia Autonomous Region and divides it into three land regions and eight land zones. Proposes definitely the importance of the process of geography in grouping the besie types of land, and explains the main processes of geography which developea in Inner Mongolia and their meanings. On the ground of the analysis of the process of geography, the author puts forward a set of classification system which is based wpon...

The article attempts to analyse from the besic factors of differential types of land in Inner Mongolia Autonomous Region and divides it into three land regions and eight land zones. Proposes definitely the importance of the process of geography in grouping the besie types of land, and explains the main processes of geography which developea in Inner Mongolia and their meanings. On the ground of the analysis of the process of geography, the author puts forward a set of classification system which is based wpon land order-land group-land unit as a basic type and gives a simple discussion to each type in this system res pectively.

本文试图从分析内蒙古土地分异的基本因素出发,将内蒙古自治区划分为三个土地区,八个土地带。明确提出地理过程在划分土地的基本类型中具有重要意义,并阐明了发生在内蒙地区的几种主要地理过程及其函义。在分析地理过程的基础上,提出了以土地纲—土地类—土地单元为基本类型的一整套分类系统,并对系统中的不同类型作了扼要的论述及说明。

Land type is an abstract concept. It is not an objective entity. Type exists only in certain concrete local forms. The scale size and complexity degree of the land individuals are varied. So different units of land should be distinguished. Only if the types are summarized within the local forms at the same level, a logical system of toxonomy can be taken. Therefore,the dividing of land individuals is the prerequisite of land classification. Meanwhile, this dividing also has...

Land type is an abstract concept. It is not an objective entity. Type exists only in certain concrete local forms. The scale size and complexity degree of the land individuals are varied. So different units of land should be distinguished. Only if the types are summarized within the local forms at the same level, a logical system of toxonomy can be taken. Therefore,the dividing of land individuals is the prerequisite of land classification. Meanwhile, this dividing also has following effects. To provide a framework for land data bank. To promise the statistical analysis to random samples of individuals in order to prove the correctness of land classification. To differentiate the details of the utilization to local forms that have been grouped into the sametype.Since the beginning of this century,geographers have been devoting themselves to the dividing hierarchy unit of physical geographical entities. This work is called Iand units hierarchy. The units of some authors and the definitions of the chief units are compared in this paper.Land units hierarchy is a scale concept, which relates to the size of area to a certain extent but means essentially the degree of complexity.The isomeric decreases and the homogeneous increases from the higher level units to the slower.The basic theory of land units hierarchy is the law on region differentiation, which depend mainly upon the geomqrphological differences,especially in middle and small areas. Therefore geomorphology is the chief factor of dividing land units hierarchy.The change of complexity degree between land units is continuous. So the hierarchy of land units can be divided iuto some continuous level. But it should be simple so that the result map can be recognized clearly. This demands a definition of a few basic level from the continuous series. These essential units and their characteristics are as follows.(1)Land element. It is a part of a land facet, and is the smallest units of land. All the physical geographical components within it are uniform. The exactly same measure of management can be taken in it for intensive kinds of land use. It should be called "Tu Di pian" (Iand piece) in Chinese.(2)Land facet. It is a group of linked land elements. Each land facet is homogeneous in form and fairly distincts from the surrounding land. Its li-thology and deposit is also the same.One utilization should be exercised within its extent. It is called "Tu Di Mian" (land face) in Chinese.(3) Land system. It is a recurrant pattern of several kinds of land facet There is an associated pattern of simple land forms, vegetations, and soils over its range. One combination of land use (i.e. regional agricultural type) should be given to a land system. It is called "Tu Di Qun" (land crowd) in Chinese

划分土地个体是土地分类的前提。本文对比了各国所划分的土地单位,探讨了划分土地个体的方法论,进而提出三级基本的土地单位:土地片、土地面、土地群,并阐明了它们的定义和划分标准。

 
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