이 데이터 세트는 300m 공간 해상도로 2010년의 지상 및 지하 바이오매스 탄소 밀도의 시간적으로 일관되고 조화로운 전 세계 지도를 제공합니다. 지상 바이오매스 지도는 목초지, 초지, 농지, 툰드라 바이오매스의 토지 피복별 원격 감지 지도를 통합합니다. 입력 지도는 게시된 문헌에서 수집되었으며, 필요한 경우 초점 범위 또는 기간을 포함하도록 업데이트되었습니다. 지하 바이오매스 지도도 각 지상 바이오매스 지도와 토지 피복별 실증적 모델에서 파생된 일치하는 지도를 통합합니다. 지상 및 지하 지도는 나무 덮개 비율 및 토지 피복의 보조 지도와 규칙 기반 결정 트리를 사용하여 별도로 통합되었습니다. 픽셀 수준 추정치의 누적 불확실성을 보고하는 지도도 제공됩니다.
제공업체 참고: UNEP-WCMC (UN Environment Programme World Conservation Monitoring Centre) 탄소 바이오매스 데이터 세트는 토지 피복 유형에 따라 1982년과 2010년 사이의 조건을 나타냅니다. 탄소 저장량의 상대적 패턴은 이 데이터 세트로 잘 표현됩니다. NASA/ORNL 탄소 바이오매스 데이터 세트는 2010년의 바이오매스 조건을 나타내며 픽셀 수준에서 불확실성 추정치를 포함합니다.
우세하지 않은 토지 피복 유형의 추가 바이오매스가 각 픽셀 내에 표시됩니다. 자세한 내용은 각 데이터 세트를 설명하는 논문(WCMC(Soto-Navarro et al. 2020) 및 NASA/ORNL(Spawn et al. 2020))을 참고하세요.
대역
픽셀 크기 300미터
대역
이름
단위
최소
최대
픽셀 크기
설명
agb
Mg/ha
0*
129*
미터
2010년의 목본 및 초본 피복의 지상 생체량 탄소 저장량 밀도입니다. 여기에는 지표면 위에 있는 살아있는 식물 조직 (줄기, 껍질, 가지, 잔가지)에 저장된 탄소가 포함됩니다. 여기에는 살아있는 식물에 붙어 있었지만 이후 퇴적되어 더 이상 살아 있지 않은 낙엽이나 거친 목재 잔해는 포함되지 않습니다.
agb_uncertainty
Mg/ha
0*
85*
미터
2010년의 목본 및 초본 피복의 추정 지상 생체량 탄소 밀도의 불확실성입니다. 불확실성은 제곱합을 사용하여 조화 프로세스를 통해 전파된 누적 표준 오류를 나타냅니다.
bgb
Mg/ha
0*
57*
미터
2010년의 목본 및 초본 피복의 지하 생체량 탄소 저장량 밀도입니다. 여기에는 지구 표면 아래에 있는 살아있는 식물 조직 (뿌리)에 저장된 탄소가 포함됩니다. 여기에는 죽거나 탈구된 뿌리 조직이 포함되지 않으며 토양 유기물도 포함되지 않습니다.
bgb_uncertainty
Mg/ha
0*
37*
미터
2010년의 목본 및 초본 피복 결합의 추정 지하 생체량 탄소 밀도의 불확실성입니다. 불확실성은 제곱합을 사용하여 조화 프로세스를 통해 전파된 누적 표준 오류를 나타냅니다.
이 데이터 세트는 300m 공간 해상도로 2010년의 지상 및 지하 바이오매스 탄소 밀도의 시간적으로 일관되고 조화로운 전 세계 지도를 제공합니다. 지상 바이오매스 지도는 목초지, 초지, 농지, 툰드라 바이오매스의 원격 감지 지도를 통합합니다. 입력 지도는 게시된 문헌에서 수집되었습니다.
[null,null,[],[[["\u003cp\u003eThis dataset provides global maps of aboveground and belowground biomass carbon density for the year 2010 at a 300-meter resolution.\u003c/p\u003e\n"],["\u003cp\u003eIt integrates land-cover specific, remotely sensed maps of woody, grassland, cropland, and tundra biomass, offering insights into carbon storage in various ecosystems.\u003c/p\u003e\n"],["\u003cp\u003eUncertainty estimates are provided for both aboveground and belowground biomass carbon density.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is in the public domain and available without restriction on use and distribution.\u003c/p\u003e\n"],["\u003cp\u003eIt is accessible through Google Earth Engine for analysis and visualization.\u003c/p\u003e\n"]]],["The dataset from NASA ORNL DAAC provides global maps of aboveground and belowground biomass carbon density for 2010 at a 300-meter resolution. It includes data on living plant tissues above and below the earth's surface, with uncertainty estimates. The aboveground map combines remote sensing data from various land cover types and literature, while the belowground map uses empirical models. Data are accessible via Earth Engine using the snippet `ee.ImageCollection(\"NASA/ORNL/biomass_carbon_density/v1\")`.\n"],null,["# Global Aboveground and Belowground Biomass Carbon Density Maps\n\nDataset Availability\n: 2010-01-01T00:00:00Z--2010-12-31T00:00:00Z\n\nDataset Provider\n:\n\n\n [NASA ORNL DAAC at Oak Ridge National Laboratory](https://doi.org/10.3334/ORNLDAAC/1763)\n\nCadence\n: 1 Year\n\nTags\n:\n [aboveground](/earth-engine/datasets/tags/aboveground) [biomass](/earth-engine/datasets/tags/biomass) [carbon](/earth-engine/datasets/tags/carbon) [density](/earth-engine/datasets/tags/density) [forest](/earth-engine/datasets/tags/forest) [forest-biomass](/earth-engine/datasets/tags/forest-biomass) [nasa](/earth-engine/datasets/tags/nasa) [ornl](/earth-engine/datasets/tags/ornl) [vegetation](/earth-engine/datasets/tags/vegetation) \nbelowground \n\n#### Description\n\nThis dataset provides temporally consistent and harmonized global maps of aboveground and\nbelowground biomass carbon density for the year 2010 at a 300-m spatial resolution. The\naboveground biomass map integrates land-cover specific, remotely sensed maps of woody,\ngrassland, cropland, and tundra biomass. Input maps were amassed from the published literature\nand, where necessary, updated to cover the focal extent or time period. The belowground biomass\nmap similarly integrates matching maps derived from each aboveground biomass map and land-cover\nspecific empirical models. Aboveground and belowground maps were then integrated separately\nusing ancillary maps of percent tree cover and landcover and a rule-based decision tree. Maps\nreporting the accumulated uncertainty of pixel-level estimates are also provided.\n\nProvider's note: The UN Environment Programme World Conservation Monitoring\nCentre (UNEP-WCMC) carbon biomass dataset\nrepresents conditions between 1982 and 2010 depending on land cover type. The relative patterns\nof carbon stocks are well represented with this dataset. The [NASA/ORNL carbon biomass dataset](https://daac.ornl.gov/VEGETATION/guides/Global_Maps_C_Density_2010.html)\nrepresents biomass conditions for 2010, with uncertainty estimates at the pixel-level.\nAdditional biomass of non-dominant land cover types are represented within each pixel. For more\ndetailed information, please refer to the papers describing each dataset: [WCMC](/earth-engine/datasets/catalog/WCMC_biomass_carbon_density_v1_0)\n[(Soto-Navarro et al. 2020)](https://royalsocietypublishing.org/doi/full/10.1098/rstb.2019.0128)\nand NASA/ORNL [(Spawn et al. 2020)](https://www.nature.com/articles/s41597-020-0444-4).\n\n### Bands\n\n\n**Pixel Size**\n\n300 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Pixel Size | Description |\n|-------------------|-------|-----|-------|------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `agb` | Mg/ha | 0\\* | 129\\* | meters | Aboveground living biomass carbon stock density of combined woody and herbaceous cover in 2010. This includes carbon stored in living plant tissues that are located above the earth's surface (stems, bark, branches, twigs). This does not include leaf litter or coarse woody debris that were once attached to living plants but have since been deposited and are no longer living. |\n| `agb_uncertainty` | Mg/ha | 0\\* | 85\\* | meters | Uncertainty of estimated aboveground living biomass carbon density of combined woody and herbaceous cover in 2010. Uncertainty represents the cumulative standard error that has been propagated through the harmonization process using summation in quadrature. |\n| `bgb` | Mg/ha | 0\\* | 57\\* | meters | Belowground living biomass carbon stock density of combined woody and herbaceous cover in 2010. This includes carbon stored in living plant tissues that are located below the earth's surface (roots). This does not include dead and/or dislocated root tissue, nor does it include soil organic matter. |\n| `bgb_uncertainty` | Mg/ha | 0\\* | 37\\* | meters | Uncertainty of estimated belowground living biomass carbon density of combined woody and herbaceous cover in 2010. Uncertainty represents the cumulative standard error that has been propagated through the harmonization process using summation in quadrature. |\n\n\\* estimated min or max value\n\n### Terms of Use\n\n**Terms of Use**\n\nThis dataset is in the public domain and is available\nwithout restriction on use and distribution. See [NASA's\nEarth Science Data \\& Information Policy](https://www.earthdata.nasa.gov/engage/open-data-services-and-software/data-and-information-policy)\nfor additional information.\n\n### Citations\n\nCitations:\n\n- Spawn, S.A., Sullivan, C.C., Lark, T.J. et al. Harmonized global maps of above and\n belowground biomass carbon density in the year 2010. Sci Data 7, 112 (2020).\n [doi:10.1038/s41597-020-0444-4](https://doi.org/10.1038/s41597-020-0444-4)\n- Spawn, S.A., and H.K. Gibbs. 2020. Global Aboveground and Belowground\n Biomass Carbon Density Maps for the Year 2010. ORNL DAAC, Oak Ridge, Tennessee, USA.\n\n### DOIs\n\n- \u003chttps://doi.org/10.3334/ORNLDAAC/1763\u003e\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\nvar dataset = ee.ImageCollection('NASA/ORNL/biomass_carbon_density/v1');\n\nvar visualization = {\n bands: ['agb'],\n min: -50.0,\n max: 80.0,\n palette: ['d9f0a3', 'addd8e', '78c679', '41ab5d', '238443', '005a32']\n};\n\nMap.setCenter(-60.0, 7.0, 4);\n\nMap.addLayer(dataset, visualization, 'Aboveground biomass carbon');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/NASA/NASA_ORNL_biomass_carbon_density_v1) \n[Global Aboveground and Belowground Biomass Carbon Density Maps](/earth-engine/datasets/catalog/NASA_ORNL_biomass_carbon_density_v1) \nThis dataset provides temporally consistent and harmonized global maps of aboveground and belowground biomass carbon density for the year 2010 at a 300-m spatial resolution. The aboveground biomass map integrates land-cover specific, remotely sensed maps of woody, grassland, cropland, and tundra biomass. Input maps were amassed from the published literature ... \nNASA/ORNL/biomass_carbon_density/v1, aboveground,biomass,carbon,density,forest,forest-biomass,nasa,ornl,vegetation \n2010-01-01T00:00:00Z/2010-12-31T00:00:00Z \n-61.1 -180 84 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.3334/ORNLDAAC/1763](https://doi.org/https://doi.org/10.3334/ORNLDAAC/1763)\n- [https://doi.org/10.3334/ORNLDAAC/1763](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NASA_ORNL_biomass_carbon_density_v1)"]]
