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GB/T 40034-2021: Validation of leaf area index remote sensing products
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Validation of leaf area index remote sensing products
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GB/T 40034-2021
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Basic data | Standard ID | GB/T 40034-2021 (GB/T40034-2021) | | Description (Translated English) | Validation of leaf area index remote sensing products | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A77 | | Word Count Estimation | 22,223 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 40034-2021: Validation of leaf area index remote sensing products---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.
Validation of leaf area index remote sensing products
ICS 07.040
A77
National Standards of People's Republic of China
Verification of the authenticity of leaf area index remote sensing products
Released on 2021-04-30
2021-11-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Basic requirements 1
5 Inspection method 2
5.1 Inspection method selection 2
5.2 Direct inspection method 2
5.2.1 Ground sampling method 2
5.2.2 Inspection process 3
5.3 Indirect inspection method 4
5.3.1 Multi-scale step-by-step inspection method based on ground measurement and high-resolution remote sensing data 4
5.3.2 Cross-checking method based on remote sensing products with known quality precision leaf area index 5
6 Inspection report 6
6.1 Cover information 6
6.2 Body information 6
6.2.1 Overview of remote sensing products for leaf area index to be inspected 6
6.2.2 Reference object description 6
6.2.3 Inspection methods and procedures 6
6.2.4 Conclusion of authenticity inspection 7
6.2.5 Additional information 7
6.3 Summary of inspection report information 7
Appendix A (informative appendix) Stratified sampling method 8
Appendix B (informative appendix) Ground measurement method of leaf area index 9
Appendix C (informative appendix) Forest parameter measurement methods 10
Appendix D (informative appendix) Spatial representativeness evaluation method 12
Appendix E (Informative Appendix) Accuracy Evaluation Index and Calculation Method 16
Reference 17
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the Chinese Academy of Sciences.
This standard is under the jurisdiction of the National Standardization Technical Committee of Remote Sensing Technology (SAC/TC327).
Drafting organizations of this standard. Institute of Aerospace Information Innovation, Chinese Academy of Sciences, Fuzhou University, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Chinese Academy of Sciences
Institute of Geographical Sciences and Resources, Peking University, Beijing Normal University, University of Chinese Academy of Sciences, Chinese Academy of Forestry Resources Information
Research Institute, Institute of Agricultural Resources and Agricultural Regional Planning, Chinese Academy of Agricultural Sciences, Southwest Jiaotong University, Huazhong Agricultural University.
The main drafters of this standard. Li Jing, Zhao Jing, Zou Jie, Zeng Yelu, Liu Qinhuo, Li Xin, Fang Hongliang, Tang Bohui, Fan Wenjie, Qu Yonghua,
Mu Xihan, Jiang Xiaoguang, Chen Erxue, Wu Wenbin, Dong Yadong, Wang Xinhong, Liu Zhaoyan, Yin Gaofei, Xu Baodong.
Verification of the authenticity of leaf area index remote sensing products
1 Scope
This standard specifies the basic requirements, inspection methods and inspection report format for the authenticity inspection of leaf area index remote sensing products.
This standard applies to the authenticity inspection of leaf area index remote sensing products.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 36296-2018 Guidelines for authenticity inspection of remote sensing products
GB/T 39468-2020 General method for authenticity inspection of land quantitative remote sensing products
3 Terms and definitions
The following terms and definitions defined in GB/T 36296-2018 and GB/T 39468-2020 apply to this document.
3.1
Leaf area index leafareaindex; LAI
Half of the total area of the blade in the unit projected area of the ground.
3.2
Effective leaf area index effectiveleafareaindex
The leaf area index equal to the observed porosity value under the assumption that the leaves are randomly distributed.
Note. It can be obtained indirectly through optical instrument method measurement or remote sensing inversion.
3.3
Clumpingindex
Describe the spatial distribution pattern of leaves in the canopy, which are randomly distributed, regularly distributed, and clustered in nature.
3.4
Elementary sampling unit; ESU
The regional unit for leaf area index measurement deployed in the ground observation field.
3.5
Wireless sensor networks wireless sensor networks; WSN
A network formed by freely organizing and combining sensor nodes through wireless communication technology.
4 Basic requirements
The authenticity inspection of the leaf area index remote sensing product should meet the requirements of Chapter 7 in GB/T 36296-2018, and meet the following requirements.
a) When the inspection object is a single-day leaf area index remote sensing product, the difference in acquisition time between the reference object and the inspection object should be within 2 days;
When the inspection object is a multi-day composite product of leaf area index, the acquisition time of the reference object should be in the composite product of leaf area index remote sensing.
in time;
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