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Global distribution of hydrologic controls on forest growth


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Resource type: Composite Resource
Storage: The size of this resource is 314.7 MB
Created: Aug 25, 2019 at 2:54 p.m.
Last updated: Jun 23, 2020 at 1:08 p.m.
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Content types: Geographic Raster Content 
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Abstract

Vegetation provides key ecosystem services and is an important component in the hydrological cycle. Traditionally, the global distribution of vegetation is explained through climatic water availability. Locally, however, groundwater can aid growth by providing an extra water source (e.g. oases) or hinder growth by presenting a barrier to root expansion (e.g. swamps). In this study we analysed the global correlation between aridity (expressing climate driven water availability), groundwater and forest growth, approximated by the fraction of absorbed photosynthetically active radiation, and linked this to climate and landscape position. The results show that at the continental scale, climate is the main driver of forest productivity; climates with higher water availability support higher energy absorption and consequentially more growth. Within all climate zones, however, landscape position substantially alters the growth patterns, both positively and negatively. The influence of the landscape on vegetation growth varies over climate, displaying the importance of analysing vegetation growth in a climate-landscape continuum.

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Resource Level Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
North Latitude
90.0000°
East Longitude
180.0000°
South Latitude
-90.0000°
West Longitude
-180.0000°

Content

How to Cite

Roebroek, C. T. J. (2020). Global distribution of hydrologic controls on forest growth, HydroShare, http://www.hydroshare.org/resource/38ac7dd90c7d4353bb492604981782f0

This resource is shared under the Creative Commons Attribution CC BY.

 http://creativecommons.org/licenses/by/4.0/
CC-BY

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