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Il y a 45 éléments de contenu liés à terres arides sur le Land Portal.

terres arides

Drylands: tropical and temperate areas with an aridity index (annual rainfall/annual potential evaporation) of less than 0.65

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Publication évaluée par des pairs
mars 2021
Tunisie

Natural rangelands occupy about 5.5 million hectares of Tunisia’s landmass, and 38% of this area is in Tataouine governorate. Although efforts towards natural restoration are increasing rapidly as a result of restoration projects, the area of degraded rangelands has continued to expand and the severity of desertification has continued to intensify.

Articles et Livres
mars 2021
Global

Meeting the Sustainable Development Goals requires drylands sustainability. Treating drylands as global environmental commons enables better tailored governance responses. Key nested governance elements for drylands involve setting goals, monitoring and delivering sanctions across scales. The present global governance system for drylands only partially delivers these elements.

Articles et Livres
décembre 2020
Global

This study develops options for the German government to improve international soil governance in the short, medium and long term. The study first takes stock of existing international instruments and institutions that are relevant for soil protection and its governance at the international level.

Rapports et recherches
décembre 2020
Mali
Afrique occidentale

The adoption of FMNR increased by 50% over 20 years; about 90% of all farmers now encourage natural regeneration on the land that they manage. The key to success is having local institutions that are respected and effective.

Articles et Livres
décembre 2020
Global

Most commonly in drylands the salinity levels are always high and evenly dispersed due to this salinity levels the plant cultivated are usually tremendously affected. Normal plants cannot grow in soils with high salinity levels. In this book the authors would like to analyze the effects of human acticities on the salinity lebvels in drylands.

Articles et Livres
décembre 2020
Ghana
Afrique

The Lawra district of the Upper West region was selected as the case study. This study compared crop yields for FMNR and non-FMNR farmers. FMNR farmers are classified as having at least 8 trees per acre, with an average of 13 trees per acre (33 per ha) and a maximum of 40.

Publication évaluée par des pairs
décembre 2020
Global

Grazing leads to the reduction of biomass and plays a critical role in land degradation in arid and semiarid lands. However, the indirect effects of grazing on the ecosystem, e.g., the effect on seed dispersal, have not been well understood.

Rapports et recherches
décembre 2020
Niger
Afrique occidentale

Key success factors
There were several reasons for the success of the restoration initiative.
• Implementation had the active participation of the local community; i.e., it was community- led restoration.
• Restoration produced short- and long-term economic and environmental benefits.
• It systematically included women, girls and youth in restoration activities.

Rapports et recherches
décembre 2020
Burkina Faso
Afrique occidentale

Since the mid-1980s, the positive impacts of these simple, cost-efficient water harvesting techniques become clear, following their increasingly widespread adoption. Their use has allowed smallholders to reverse land degradation, improve soil fertility, sustainably increase crop production, achieve food security, and create more productive, diverse and resilient farming systems.

Articles et Livres
décembre 2020
Burkina Faso
République centrafricaine
Cameroun
Algérie
Érythrée
Éthiopie
Mali
Mauritanie
Niger
Nigéria
Soudan
Sénégal
Soudan du Sud
Tchad

Drylands occupy more than 40% of the world’s land area and are home to some two billion people. This includes a disproportionate number of the world’s poorest people, who live in degraded and severely degraded landscapes.

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