이 데이터 세트는 게시자 카탈로그에 속하며 Google 어스 엔진에서 관리하지 않습니다.
버그가 있는 경우 listaopgee@battelleecology.org에 문의하거나 국립 생태 관측 네트워크 카탈로그에서 데이터 세트를 더 보기하세요. 게시자 데이터 세트 자세히 알아보기
노출된 지면 위의 수관 상단의 높이 (수관 높이 모델, CHM) CHM은 NEON LiDAR 포인트 클라우드에서 파생되며 LiDAR 조사 전체 공간 도메인에서 연속적인 수관 높이 추정치를 생성하여 생성됩니다. 포인트 클라우드는 지면과 식생 반환을 나타내는 클래스로 구분됩니다. 지면으로 분류된 포인트는 식물 고도의 상대적 추정치를 제공하는 높이 정규화된 포인트 클라우드를 생성하는 데 사용됩니다. 그런 다음 높이 정규화된 식물 포인트를 사용하여 구멍이 없는 표면을 생성하여 CHM을 생성합니다. Optech Gemini LiDAR 센서로 수집된 데이터의 경우 2m 미만의 수관 높이는 0으로 설정되고 Riegl Q780 및 Optech Galaxy 센서의 경우 0.7m 미만으로 설정됩니다. 데이터는 1m 공간 해상도로 공간적으로 균일한 그리드에 AOP 설치 공간에 모자이크됩니다. GEE의 가용성은 아래 링크된 NEON 데이터 포털의 전체 가용성을 나타내지 않을 수 있습니다. listaopgee@battelleecology.org로 이메일을 보내 요청하면 GEE에 추가 사이트와 연도를 추가할 수 있습니다.
희귀종, 멸종 위기종 또는 멸종 위기종 (RTE)과 관련된 데이터를 제외하고 NEON에서 수집하고 데이터 제품으로 제공되는 모든 데이터는 Creative Commons CC0 1.0 'No Rights Reserved'에 따라 퍼블릭 도메인으로 출시됩니다. NEON 데이터에는 저작권이 적용되지 않습니다. 누구나 허가를 요청하지 않고 상업적 또는 비상업적 목적으로 데이터를 복사, 수정 또는 배포할 수 있습니다. NEON 데이터는 개인 정보 보호와 같은 기타 법률 또는 권리의 적용을 받을 수 있으며, NEON은 데이터에 대해 어떠한 보증도 하지 않으며 모든 책임을 부인합니다. NEON 데이터를 사용하거나 인용할 때는 NEON의 보증에 관한 언급을 해서는 안 됩니다. 대부분의 국가에서 데이터와 사실에는 저작권이 적용되지 않습니다. NEON 데이터를 퍼블릭 도메인에 배치함으로써 Google은 특히 과학적 분석 및 데이터 집계에서 광범위한 사용을 장려합니다. 하지만 다음과 같은 학술적 규범을 준수해야 합니다.
NEON 데이터는 데이터 패키지와 연결된 문서를 가이드로 사용하여 데이터의 제한사항을 고려하는 방식으로 사용해야 합니다.
NEON 데이터를 올바르게 사용하고 인용하는 방법과 NEON 데이터를 사용하는 연구를 게시하기 위한 권장사항에 관한 자세한 내용은 NEON 데이터 가이드라인 및 정책을 참고하세요.
[null,null,[],[[["\u003cp\u003eThis dataset provides Canopy Height Models (CHM) derived from LiDAR data collected by the National Ecological Observatory Network (NEON).\u003c/p\u003e\n"],["\u003cp\u003eThe CHM represents the height of the canopy above bare earth, with data mosaicked onto a 1-meter resolution grid.\u003c/p\u003e\n"],["\u003cp\u003eData are available from 2013 to 2023 and cover the spatial domain of NEON's Airborne Observation Platform (AOP) surveys.\u003c/p\u003e\n"],["\u003cp\u003eUsers can access the dataset through Google Earth Engine using the provided code snippet and explore it further with tutorials and a data viewer app.\u003c/p\u003e\n"],["\u003cp\u003eNEON data are generally released to the public domain under Creative Commons CC0 1.0 "No Rights Reserved" license, with specific citation guidelines available.\u003c/p\u003e\n"]]],[],null,["# NEON Canopy Height Model (CHM)\n\ninfo\n\n\nThis dataset is part of a Publisher Catalog, and not managed by Google Earth Engine.\n\nContact listaopgee@battelleecology.org\n\nfor bugs or [view more datasets](https://developers.google.com/earth-engine/datasets/publisher/neon-prod-earthengine)\nfrom the National Ecological Observatory Network Catalog. [Learn more about Publisher datasets](/earth-engine/datasets/publisher). \n[](https://www.neonscience.org/data-collection/airborne-remote-sensing) \n\nCatalog Owner\n: National Ecological Observatory Network\n\nDataset Availability\n: 2013-01-01T00:00:00Z--2024-09-08T16:03:42Z\n\nDataset Provider\n:\n\n\n [NEON](https://data.neonscience.org/data-products/DP3.30015.001)\n\nTags\n:\n[airborne](/earth-engine/datasets/tags/airborne) [canopy](/earth-engine/datasets/tags/canopy) [forest](/earth-engine/datasets/tags/forest) [forest-biomass](/earth-engine/datasets/tags/forest-biomass) [lidar](/earth-engine/datasets/tags/lidar) [neon](/earth-engine/datasets/tags/neon) [neon-prod-earthengine](/earth-engine/datasets/tags/neon-prod-earthengine) [publisher-dataset](/earth-engine/datasets/tags/publisher-dataset) [vegetation](/earth-engine/datasets/tags/vegetation) \n\n#### Description\n\nHeight of the top of canopy above bare earth (Canopy Height Model; CHM). The CHM\nis derived from the [NEON LiDAR](https://www.neonscience.org/data-collection/lidar)\npoint cloud and is generated by creating a continuous surface of canopy height\nestimates across the entire spatial domain of the LiDAR survey. The point cloud\nis separated into classes representing the ground and vegetation returns. The\nground classified points are used to generate a height-normalized point cloud that\nprovides a relative estimate of vegetation elevation. A pit-free surface is then\ngenerated using the height normalized vegetation points to produce the CHM. Any\ncanopy heights less than 2 m are set to zero for data collected with the Optech\nGemini LiDAR sensors, and less than 0.7 m for the Riegl Q780 and Optech Galaxy\nsensors. Data are mosaicked over the AOP footprint onto a spatially uniform grid\nat 1 m spatial resolution. Availability in GEE may not represent full availability\nin the NEON Data Portal (linked below). Additional sites and years can be added to\nGEE upon request by emailing listaopgee@battelleecology.org.\n\nSee [NEON Data Product DP3.30015.001](https://data.neonscience.org/data-products/DP3.30015.001) for\nmore details.\n\nDocumentation: [NEON Ecosystem structure (DP3.30015.001) Quick StartGuide](https://data.neonscience.org/api/v0/documents/quick-start-guides/NEON.QSG.DP3.30015.001v1?inline=true&fallback=html)\n\nGet started by exploring the [Intro to AOP Data in Google Earth Engine Tutorial Series](https://www.neonscience.org/resources/learning-hub/tutorials/intro-aop-data-google-earth-engine-tutorial-series)\n\nBrowse and interact with AOP data in the [NEON AOP GEE Data Viewer App](https://neon-prod-earthengine.projects.earthengine.app/view/neon-aop-gee-data-viewer---desktop)\n\n### Bands\n\n\n**Pixel Size**\n\n1 meter\n\n**Bands**\n\n| Name | Units | Min | Max | Pixel Size | Description |\n|-------|-------|-----|-----|------------|---------------------|\n| `CHM` | m | 0 | 100 | meters | Canopy Height Model |\n\n### Image Properties\n\n**Image Properties**\n\n| Name | Type | Description |\n|----------------------|--------|-----------------------------------------------------------------------------------------------------------------------------------------------|\n| AOP_VISIT_NUMBER | INT | Unique visit number to the NEON site. |\n| CITATION | STRING | Data citation. See [NEON Data Policies and Citation Guidelines](https://www.neonscience.org/data-samples/data-policies-citation). |\n| DOI | STRING | Digital Object Identifier. NEON data that have been released are assigned a DOI. |\n| FLIGHT_YEAR | INT | Year the data were collected |\n| NEON_DOMAIN | STRING | NEON eco-climatic domain code, \"D01\" to \"D20\". See [NEON Field Sites and Domains](https://www.neonscience.org/field-sites/about-field-sites). |\n| NEON_SITE | STRING | NEON four-digit site code. See [NEON Field Sites](https://www.neonscience.org/field-sites/). |\n| NEON_SITE_NAME | STRING | Full name of the NEON site. See [NEON Field Sites](https://www.neonscience.org/field-sites/). |\n| NEON_DATA_PROD_URL | STRING | NEON data product url. Always set to: \u003chttps://data.neonscience.org/data-products/DP3.30015.001\u003e. |\n| SENSOR_NAME | STRING | Make and model of the lidar sensor: \"Optech Galaxy Prime\", \"Optech Gemini\", \"Riegl Q780\". |\n| SENSOR_SERIAL | STRING | Serial number of the lidar sensor: \"11SEN287\", \"12SEN311\", \"5060445\", \"220855\". |\n| PROVISIONAL_RELEASED | STRING | Whether the data are Provisional or Released. See \u003chttps://www.neonscience.org/data-samples/data-management/data-revisions-releases\u003e. |\n| RELEASE_YEAR | INT | If data are released, the year of the NEON Release Tag. |\n\n### Terms of Use\n\n**Terms of Use**\n\nAll data collected by NEON and provided as data products, with the exception\nof data related to rare, threatened, or endangered (RTE) species, are\nreleased to the public domain under [Creative Commons CC0 1.0 \"No Rights\nReserved\"](https://creativecommons.org/publicdomain/zero/1.0/). No\ncopyright has been applied to NEON data; any person may copy, modify, or\ndistribute the data, for commercial or non-commercial purposes, without\nasking for permission. NEON data may still be subject to other laws or\nrights such as for privacy, and NEON makes no warranties about the data and\ndisclaims all liability. When using or citing NEON data, no implication\nshould be made about endorsement by NEON. In most countries, data and facts\nare not copyrightable. By putting NEON data into the public domain, we\nencourage broad use, particularly in scientific analyses and data\naggregations. However, please be aware of the following scholarly norms:\nNEON data should be used in a way that is mindful of the limitations of the\ndata, using the documentation associated with the data packages as a guide.\nPlease refer to [NEON Data Guidelines and Policies](https://www.neonscience.org/data-samples/guidelines-policies)\nfor detailed information on how to properly use and cite NEON data, as well as\nbest practices for publishing research that uses NEON data.\n\n### Citations\n\nCitations:\n\n- See [NEON citation guidelines](https://www.neonscience.org/data-samples/guidelines-policies/citing).\n\n### Explore with Earth Engine\n\n| **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\n// Read in the NEON AOP CHM Image Collection\nvar chm = ee.ImageCollection(\n 'projects/neon-prod-earthengine/assets/CHM/001');\n\n// Display available images in the CHM Image Collection\nprint('NEON CHM Images', chm.aggregate_array('system:index'))\n\n// Specify the start and end dates and filter by dates\nvar startDate = ee.Date('2021-01-01');\nvar endDate = startDate.advance(1, 'year');\nvar chm2021 = chm.filterDate(startDate, endDate);\n\n// Filter by NEON site name (see https://www.neonscience.org/field-sites/explore-field-sites)\nvar soapCHM = chm2021.filter('NEON_SITE == \"SOAP\"');\n\n// Define the visualization parameters, using a green color palette\nvar chmVis = {min: 0, max: 35, palette: ['E6F7E0', '063B00']};\n\n// Add the CHM layer to the Map and center on the site\nMap.addLayer(soapCHM, chmVis, 'SOAP 2021 Canopy Height Model (m)');\nMap.setCenter(-119.25, 37.06, 12);\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/neon-prod-earthengine/projects_neon-prod-earthengine_assets_CHM_001) \n[NEON Canopy Height Model (CHM)](/earth-engine/datasets/catalog/projects_neon-prod-earthengine_assets_CHM_001) \nHeight of the top of canopy above bare earth (Canopy Height Model; CHM). The CHM is derived from the NEON LiDAR point cloud and is generated by creating a continuous surface of canopy height estimates across the entire spatial domain of the LiDAR survey. The point cloud is separated into ... \nprojects/neon-prod-earthengine/assets/CHM/001, airborne,canopy,forest,forest-biomass,lidar,neon,neon-prod-earthengine,publisher-dataset,vegetation \n2013-01-01T00:00:00Z/2024-09-08T16:03:42Z \n16 -170 73 -66 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://data.neonscience.org/data-products/DP3.30015.001)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/projects_neon-prod-earthengine_assets_CHM_001)"]]
