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GB/T 21439-2008: Assessment for the status of rangeland health
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GB/T 21439-2008: Assessment for the status of rangeland health

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Assessment for the status of rangeland health ICS 65.020.01 B40 National Standards of People's Republic of China Prairie Health Evaluation Posted 2008-02-01 2008-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 Evaluation 3 Step 5 Evaluation 6 Right Appendix A (informative) Evaluation of the health of grassland weight coefficient 9 Reference 10

Foreword

Appendix A of this standard is an informative annex. The standard proposed by the People's Republic of China Ministry of Agriculture. This standard by the National Standardization Technical Committee of animal husbandry. This standard was drafted. Beijing Animal Husbandry and Veterinary Research Institute, Chinese Academy of Agricultural Sciences. The main drafters of this standard. Li Xianglin, Wan Li Qiang, He Feng, Liu Yujie. Prairie Health Evaluation

1 Scope

This standard specifies the indicators and methods of grassland health evaluation. This standard applies to the health of grassland classification and evaluation.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. NY/T 1121.6-2006 soil testing - Part 6. Determination of organic matter in soil NY/T 1233-2006 Technical specification of grassland resources and ecological monitoring Soil and Water Conservation Monitoring Technical specification SL277-2002 TD/T 1004-2003 Regulations of Farmland Grading TD/T 1005-2003 agricultural land grading procedures

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 Natural plant communities with a large area of \u200b\u200bgreen land, its plants or plant parts may be used directly after mowing or grazing livestock. grass Original native vegetation (potential climax climax communities or communities under natural conditions) is not a tree, but mainly Gramineae, legumes, sedges, miscellaneous Grass and other herbs or animal feed may tender foliage shrubs. Feed prairie provided mainly from the natural vegetation, for the introduction of grassland Cultivated plants, but also according to the unified management of natural vegetation. This standard does not include the alleged prairie grass and artificial green grass. 3.2 , Ecological processes (ecologicalprocess) balance the integrity of the grassland ecosystem biological and non-biological structures (integrity) and Sustainable level. 3.3 It is unique in terms of the physical properties of the soil, vegetation types and yields as well as a response to the management and so on, and there are obviously other types of land The difference between land units. Grassland habitat is the basic unit to the health of the evaluation. 3.4 Soil (land border) resistance to wind and water caused soil resources (including mineral nutrients and organic matter) redistribution and loss of capacity. 3.5 Underground habitat acquisition, storage and safe release of capacity from precipitation, snowmelt runoff and other water sources, and the ability to resist the loss of function, and back After the resilience of these functions. ...