{
 "culture": "en-US",
 "name": "",
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 "snippet": "Holdridge\u2019s work was aimed to correlate world plant formations with simple climatic data. The system embraces all major environmental factors in three hierarchical tiers.\n\nLevel I - The Life Zone. This is determined by specific quantitative ranges of long-term average annual precipitation, mean annual biotemperature and potential evapotranspiration ratio. These are modified for montane systems. \n\nLevel II - The \"Association\". This is an area of land which, under undisturbed conditions, supports a distinctive natural community adapted through evolution to a specific narrow range of atmospheric and edaphic conditions. No Association can occur in more than one Life Zone.\n\nLevel III - The successional stage or cover type, which takes into account that the community may not be in its climax state, either through natural causes or through human intervention.",
 "description": "<DIV STYLE=\"text-align:Left;\"><DIV><DIV><P><SPAN>Map of Holdridge's life zone system<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>",
 "summary": "Holdridge\u2019s work was aimed to correlate world plant formations with simple climatic data. The system embraces all major environmental factors in three hierarchical tiers.\n\nLevel I - The Life Zone. This is determined by specific quantitative ranges of long-term average annual precipitation, mean annual biotemperature and potential evapotranspiration ratio. These are modified for montane systems. \n\nLevel II - The \"Association\". This is an area of land which, under undisturbed conditions, supports a distinctive natural community adapted through evolution to a specific narrow range of atmospheric and edaphic conditions. No Association can occur in more than one Life Zone.\n\nLevel III - The successional stage or cover type, which takes into account that the community may not be in its climax state, either through natural causes or through human intervention.",
 "title": "Holdridge's life zones (1992)",
 "tags": [
  "Holdridge",
  "Life Zones",
  "global",
  "world"
 ],
 "type": "",
 "typeKeywords": [],
 "thumbnail": "",
 "url": "",
 "minScale": 150000000,
 "maxScale": 5000,
 "spatialReference": "",
 "accessInformation": "Citation: \n\nLeemans, R. (1992). Global Holdridge Life Zone Classifications. Laxenberg (Austria): IIASA.",
 "licenseInfo": "<DIV STYLE=\"text-align:Left;\"><DIV><DIV><P><SPAN>1) Adhere to terms and conditions of access, 2) acknowledge the source appropriately, 3) do not re-distribute part or all of data without contacting UNEP-WCMC.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>"
}