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LY/T 1821-2009 English PDF

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LY/T 1821-2009: Cartographic symbols for forestry maps
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LY/T 1821-2009English3079 Add to Cart 13 days [Need to translate] Cartographic symbols for forestry maps   LY/T 1821-2009

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Standard similar to LY/T 1821-2009

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Basic data

Standard ID LY/T 1821-2009 (LY/T1821-2009)
Description (Translated English) Cartographic symbols for forestry maps
Sector / Industry Forestry Industry Standard (Recommended)
Classification of Chinese Standard B04
Classification of International Standard 01.100.01
Word Count Estimation 96,928
Date of Issue 2009-06-18
Date of Implementation 2009-10-01
Quoted Standard GB/T 13989
Regulation (derived from) Industry standard filing Notice 2009 No. 8
Issuing agency(ies) State Forestry Administration
Summary This standard specifies the use of forestry cartography various surface features, landscape elements symbols and annotation levels, sizes and colors, and basic usage. This standard applies to forestry work, topographic mapping, forestry research, planning and design, and geographic base map compilation.

LY/T 1821-2009: Cartographic symbols for forestry maps

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Cartographic symbols for forestry maps ICS 01.100.01 B04 People's Republic of China Forestry Industry Standard Forestry map schema Released on June 17,.2009 2009-10-01 implementation State Forestry Administration released

Content

Foreword I Introduction II 1 Scope 1 2 Normative references 1 3 General Provision 1 3.1 Classification of symbols 1 3.2 Symbol size 1 3.3 Positioning point and positioning line of positioning symbol 1 3.4 Direction and configuration of symbols 2 3.5 How to use symbols and requirements 2 3.6 Symbol Color 3 4 symbols and notes 4 4.1 Measurement Control Point 4 4.2 Water System 6 4.3 Residential areas and facilities 18 4.4 Administrative Center and Enterprises 32 4.5 Transportation 38 4.6 Pipeline 50 4.7 Realm 52 4.8 Landform 54 4.9 Land Class 62 4.10 Tree species, bamboo 70 4.11 Forest species 76 4.12 Note 80 4.13 Forest Phase Mark 86 4.14 Forest color standard 87 4.15 Land color code 87 Appendix A (informative) Topographic map framing and number 88 References 91

Foreword

Appendix A of this standard is an informative annex. This standard is proposed and managed by the State Forestry Administration. This standard is drafted by the Investigation and Design Institute of the State Forestry Administration. The main drafters of this standard. Liu Dejing, Du Binning, Tu Qiong, Zhao Youxian.

Introduction

The common features and geomorphological symbols of this standard are selected from GB/T 20257.2-2006 "National Basic Scale Map Drawing Part 2. 1.50001.10000 Topographic Map", GB/T 20257.3-2006 "National Basic Scale Map Drawing Part 3. 1.250001.500001.100000 topographic map", GB/T 20257.4-2006 "National basic scale map map 4th Part. 1.2500001.5000001.1000000 Topographic Map". The symbology of the various scales is consistent with the corresponding national basic scale map schema, and the symbol color is simplified. Ordinary The use of objects and geomorphological symbols follows the rules of the national basic scale map. Forestry map schema

1 Scope

This standard specifies the grades, specifications and colors of various features, features and notes used in the mapping of forestry maps, and This method of use. This standard applies to the mapping of topographic maps in forestry work, forestry surveys, planning and design, and the compilation of geographic base maps.

2 Normative references

The terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study Is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard. GB/T 13989 national basic scale topographic map framing and numbering

3 General regulations

3.1 Classification of symbols 3.1.1 Scale symbol. The scale symbol of the feature can be scaled according to the scale symbol. 3.1.2 Semi-scale symbol. After the scale is reduced by the scale, the length can be scaled and the width cannot be expressed by the scale. number. Mark the width dimension value next to the symbol. 3.1.3 Not according to the scale symbol. After the scale is reduced by the scale, its length and width cannot be expressed by scale. Marker symbol next to the symbol Inch value. 3.2 Symbol size 3.2.1 The size values marked with numbers next to the symbols are in millimeters (mm). 3.2.2 Only one dimension value is placed next to the symbol, indicating the diameter of the circle or circumcircle, the length of the equilateral triangle or the square; the two size values are For the column, the first number indicates the height of the main part of the symbol, the second number indicates the width of the main part of the symbol; the number of one end of the line symbol Word, single line refers to its thickness, and two parallel lines refer to the width of the line (the street refers to the width of the blank part). Special symbol on the symbol The size value of the note is indicated by a dotted line. 3.2.3 The thickness of the symbol line, the length of the line segment and the angle of the intersecting line segment, etc., are not marked with the symbol of this figure. Line drawing The thickness is 0.1mm, the diameter of the point is 0.15mm, and the line length of the non-main part of the symbol is 0.3mm (such as steep short line), non-vertical cross line The angle of the segment is 45° or 60°. 3.3 Positioning points and positioning lines of positioning symbols 3.3.1 There is a point in the symbol graph, which is the physical center position of the feature. 3.3.2 Symbols such as circles, squares, and rectangles, and the positioning point is at the center of its geometry. 3.3.3 The wide-bottom symbol (yurt, chimney, water tower, etc.) is located at the center of its bottom line. 3.3.4 The symbol with the right angle at the bottom (windmill, road sign, etc.) is located at the apex of its right angle. 3.3.5 The symbols (satches, churches, weather stations, etc.) of several graphics are located at the center or intersection of the graphic below it. 3.3.6 The symbol below the bottom line (kiln, pavilion, cave, etc.) is located at the center of the line at the lower end of the line.

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