CIFOR-ICRAF s’attaque aux défis et aux opportunités locales tout en apportant des solutions aux problèmes mondiaux concernant les forêts, les paysages, les populations et la planète.

Nous fournissons des preuves et des solutions concrètes pour transformer l’utilisation des terres et la production alimentaire : conserver et restaurer les écosystèmes, répondre aux crises mondiales du climat, de la malnutrition, de la biodiversité et de la désertification. En bref, nous améliorons la vie des populations.

CIFOR-ICRAF publie chaque année plus de 750 publications sur l’agroforesterie, les forêts et le changement climatique, la restauration des paysages, les droits, la politique forestière et bien d’autres sujets encore, et ce dans plusieurs langues. .

CIFOR-ICRAF s’attaque aux défis et aux opportunités locales tout en apportant des solutions aux problèmes mondiaux concernant les forêts, les paysages, les populations et la planète.

Nous fournissons des preuves et des solutions concrètes pour transformer l’utilisation des terres et la production alimentaire : conserver et restaurer les écosystèmes, répondre aux crises mondiales du climat, de la malnutrition, de la biodiversité et de la désertification. En bref, nous améliorons la vie des populations.

CIFOR–ICRAF publishes over 750 publications every year on agroforestry, forests and climate change, landscape restoration, rights, forest policy and much more – in multiple languages.

CIFOR–ICRAF addresses local challenges and opportunities while providing solutions to global problems for forests, landscapes, people and the planet.

We deliver actionable evidence and solutions to transform how land is used and how food is produced: conserving and restoring ecosystems, responding to the global climate, malnutrition, biodiversity and desertification crises. In short, improving people’s lives.

Quantifying shallow roots. Tree geometry makes root research easy

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A new method being developed for root research is described based on a fractal model. An equation was developed to derive the relation between total size of the root system and diameter of the proximal roots for 2 extreme branching patterns - dichotomous and herringbone. The protocol uses proximal root diameters and stem diameter at breast height to provide a tentative index of shallow rootedness (root competitiveness), tests for the fractal characteristics of root branching, and measurements of model parameters (internode lengths as a function of root diameter and the proportionality factor (alpha) between total cross-sectional surface areas, before and after branching). Preliminary tests of the method were done on 18 multipurpose trees on an acid ultisol in northern Lampung, Indonesia (mostly in a home garden, and about 6 yr old). Root data are given for these. The method is relevant to the study of competition between trees and crops in agroforestry systems.

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