La diversità topografica (D) è una variabile surrogata che rappresenta la
varietà di condizioni di temperatura e umidità disponibili per le specie come habitat
locali. Esprime la logica secondo cui una maggiore varietà di nicchie topoclimatiche
dovrebbe supportare una maggiore diversità (soprattutto vegetale) e la persistenza
delle specie dato il cambiamento climatico.
Per calcolare D, è stato utilizzato l'indice di posizione topografica multiscala (mTPI), che è un
controllo dominante dell'umidità del suolo (T), per misurare la posizione
del versante. L'mTPI è stato combinato con la trasformazione della radice quadrata per
mTPI>0 (T') e con la deviazione standard dell'indice di carico di insolazione termica continuo (CHILI), calcolato su più scale (C') come:
D = 1 - ((1-T') * (1-C'). Si basa sulla banda "AVE" di 30 m del DEM ALOS di JAXA (disponibile in EE come JAXA/ALOS/AW3D30_V1_1).
I set di dati, le forme del terreno e la fisiografia di Conservation Science Partners (CSP) Ecologically Relevant Geomorphology (ERGo) contengono dati dettagliati e multiscala su forme del terreno e pattern fisiografici (noti anche come sfaccettature del terreno). Sebbene
questi dati possano essere utilizzati in molti modi, lo scopo originale era quello di sviluppare una classificazione e una mappa ecologicamente pertinenti di
forme del terreno e classi fisiografiche adatte alla pianificazione dell'adattamento ai cambiamenti climatici. Poiché esiste una grande incertezza associata alle condizioni climatiche future e ancora maggiore incertezza sulle risposte ecologiche, fornire informazioni su ciò che è improbabile che cambi offre una solida base per consentire ai gestori di elaborare piani di adattamento al clima efficaci. La quantificazione di queste caratteristiche del paesaggio è sensibile alla risoluzione, pertanto forniamo la risoluzione più elevata possibile in base all'estensione e alle caratteristiche di un determinato indice.
Theobald, D. M., Harrison-Atlas, D., Monahan, W. B., & Albano, C. M.
(2015). Mappe ecologicamente rilevanti di morfologie e diversità fisiografica
per la pianificazione dell'adattamento al clima. PloS one, 10(12),
e0143619
La diversità topografica (D) è una variabile surrogata che rappresenta la varietà di condizioni di temperatura e umidità disponibili per le specie come habitat locali. Esprime la logica secondo cui una maggiore varietà di nicchie topoclimatiche dovrebbe supportare una maggiore diversità (soprattutto vegetale) e la persistenza delle specie in caso di cambiamento climatico. Per calcolare D, …
[null,null,[],[[["\u003cp\u003eThe dataset provides a global, ALOS-derived topographic diversity index at a 270-meter resolution, representing the variety of temperature and moisture conditions available to species.\u003c/p\u003e\n"],["\u003cp\u003eTopographic diversity is calculated using a combination of multi-scale Topographic Position Index (mTPI) and Continuous Heat-Insolation Load Index (CHILI) to represent the variety of topo-climate niches.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset, developed by Conservation Science Partners, was created for climate adaptation planning and ecological relevance with landforms and physiographic patterns.\u003c/p\u003e\n"],["\u003cp\u003eThe data is based on the 30m "AVE" band of JAXA's ALOS DEM and is available under the CC-BY-NC-SA-4.0 license.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset covers the period from January 24, 2006, to May 13, 2011.\u003c/p\u003e\n"]]],["The dataset, provided by Conservation Science Partners, contains global topographic diversity data from 2006 to 2011. It uses a calculation (D) based on multi-scale Topographic Position Index (mTPI) and the Continuous Heat-Insolation Load Index (CHILI) to represent the variety of temperature and moisture conditions for species habitats. The data, derived from JAXA's ALOS DEM, is available in Earth Engine as an image ('constant' band) with a 270-meter pixel size and is intended for climate adaptation planning.\n"],null,["# Global ALOS Topographic Diversity\n\nDataset Availability\n: 2006-01-24T00:00:00Z--2011-05-13T00:00:00Z\n\nDataset Provider\n:\n\n\n [Conservation Science Partners](https://www.csp-inc.org/)\n\nTags\n:\n[aspect](/earth-engine/datasets/tags/aspect) [csp](/earth-engine/datasets/tags/csp) [elevation](/earth-engine/datasets/tags/elevation) [elevation-topography](/earth-engine/datasets/tags/elevation-topography) [ergo](/earth-engine/datasets/tags/ergo) [geophysical](/earth-engine/datasets/tags/geophysical) [global](/earth-engine/datasets/tags/global) [landforms](/earth-engine/datasets/tags/landforms) [slope](/earth-engine/datasets/tags/slope) [topography](/earth-engine/datasets/tags/topography) \n\n#### Description\n\nTopographic diversity (D) is a surrogate variable that represents the\nvariety of temperature and moisture conditions available to species as local\nhabitats. It expresses the logic that a higher variety of topo-climate\nniches should support higher diversity (especially plant) and support\nspecies persistence given climatic change.\n\nTo calculate D, the multi-scale Topographic Position Index (mTPI), being a\ndominant control of soil moisture (T), was used for measuring hillslope\nposition. The mTPI was combined with the square-root transform for\nmTPI\\\u003e0 (T') and with the standard deviation of the Continuous\nHeat-Insolation Load Index (CHILI), calculated at multiple scales (C') as:\nD = 1 - ((1-T') \\* (1-C'). It is based on the 30m \"AVE\" band of JAXA's ALOS\nDEM (available in EE as JAXA/ALOS/AW3D30_V1_1).\n\nThe Conservation Science Partners (CSP) Ecologically Relevant Geomorphology\n(ERGo) Datasets, Landforms and Physiography contain detailed, multi-scale\ndata on landforms and physiographic (aka land facet) patterns. Although\nthere are many potential uses of these data, the original purpose for these\ndata was to develop an ecologically relevant classification and map of\nlandforms and physiographic classes that are suitable for climate adaptation\nplanning. Because there is large uncertainty associated with future climate\nconditions and even more uncertainty around ecological responses, providing\ninformation about what is unlikely to change offers a strong foundation for\nmanagers to build robust climate adaptation plans. The quantification of\nthese features of the landscape is sensitive to the resolution, so we\nprovide the highest resolution possible given the extent and characteristics\nof a given index.\n\n### Bands\n\n\n**Pixel Size**\n\n270 meters\n\n**Bands**\n\n| Name | Min | Max | Pixel Size | Description |\n|------------|-----|-----|------------|------------------------------------|\n| `constant` | 0\\* | 1\\* | meters | ALOS-derived topographic diversity |\n\n\\* estimated min or max value\n\n### Terms of Use\n\n**Terms of Use**\n\n[CC-BY-NC-SA-4.0](https://spdx.org/licenses/CC-BY-NC-SA-4.0.html)\n\n### Citations\n\nCitations:\n\n- Theobald, D. M., Harrison-Atlas, D., Monahan, W. B., \\& Albano, C. M.\n (2015). Ecologically-relevant maps of landforms and physiographic diversity\n for climate adaptation planning. PloS one, 10(12),\n [e0143619](https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0143619)\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.Image('CSP/ERGo/1_0/Global/ALOS_topoDiversity');\nvar alosTopographicDiversity = dataset.select('constant');\nvar alosTopographicDiversityVis = {\n min: 0.0,\n max: 1.0,\n};\nMap.setCenter(-111.313, 39.724, 6);\nMap.addLayer(\n alosTopographicDiversity, alosTopographicDiversityVis,\n 'ALOS Topographic Diversity');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/CSP/CSP_ERGo_1_0_Global_ALOS_topoDiversity) \n[Global ALOS Topographic Diversity](/earth-engine/datasets/catalog/CSP_ERGo_1_0_Global_ALOS_topoDiversity) \nTopographic diversity (D) is a surrogate variable that represents the variety of temperature and moisture conditions available to species as local habitats. It expresses the logic that a higher variety of topo-climate niches should support higher diversity (especially plant) and support species persistence given climatic change. To calculate D, the ... \nCSP/ERGo/1_0/Global/ALOS_topoDiversity, aspect,csp,elevation,elevation-topography,ergo,geophysical,global,landforms,slope,topography \n2006-01-24T00:00:00Z/2011-05-13T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://www.csp-inc.org/)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/CSP_ERGo_1_0_Global_ALOS_topoDiversity)"]]
