Rehabilitation of degraded dryland ecosystems – review

Show full item record



Permalink

http://hdl.handle.net/10138/178845

Citation

Yirdaw , E , Tigabu , M & Monge Monge , A A 2017 , ' Rehabilitation of degraded dryland ecosystems – review ' , Silva Fennica , vol. 51 , no. 1b , 1673 . https://doi.org/10.14214/sf.1673

Title: Rehabilitation of degraded dryland ecosystems – review
Author: Yirdaw, Eshetu; Tigabu, Mulualem; Monge Monge, Adrian Antonio
Contributor: University of Helsinki, Department of Forest Sciences
University of Helsinki, Department of Forest Sciences
Date: 2017
Language: eng
Number of pages: 32
Belongs to series: Silva Fennica
ISSN: 0037-5330
URI: http://hdl.handle.net/10138/178845
Abstract: Land degradation is widespread and a serious threat affecting the livelihoods of 1.5 billion people worldwide of which one sixth or 250 million people reside in drylands. Globally, it is estimated that 10–20% of drylands are already degraded and about 12 million ha are degraded each year. Driven by unsustainable land use practices, adverse climatic conditions and population increase, land degradation has led to decline in provision of ecosystem services, food insecurity, social and political instability and reduction in the ecosystem’s resilience to natural climate variability. Several global initiatives have been launched to combat land degradation, including rehabilitation of degraded drylands. This review aimed at collating the current state-of-knowledge about rehabilitation of degraded drylands. It was found that the prospect of restoring degraded drylands is technically promising using a suite of passive (e.g. area exclosure, assisted natural regeneration, rotational grazing) and active (e.g. mixed-species planting, framework species, maximum diversity, and use of nurse tree) rehabilitation measures. Advances in soil reclamation using biological, chemical and physical measures have been made. Despite technical advances, the scale of rehabilitation intervention is small and lacks holistic approach. Development of process based models that forecast outcomes of the various rehabilitation activities will be useful tools for researchers and practitioners. The concept of forest landscape restoration approach, which operates at landscape-level, could also be adopted as the overarching framework for rehabilitation of degraded dryland ecosystems. The review identified a data gap in cost-benefit analysis of rehabilitation interventions. However, the cost of rehabilitation and sustainable management of drylands is opined to be lower than the losses that accrue from inaction, depending on the degree of degradation. Thus, local communities’ participation, incorporation of traditional ecological knowledge, clear division of tasks and benefits, strengthening local institutions are crucial not only for cost-sharing, but also for the long-term success of rehabilitation activities.
Subject: 4112 Forestry
land degradation
Desertification
rangelands
croplands
dry forest
landscapes
Restoration
TROPICAL DRY FORESTS
NEW-SOUTH-WALES
CYANOBACTERIAL SOIL CRUSTS
ROSS RIVER VIRUS
LAND DEGRADATION
WESTERN-AUSTRALIA
RANGELAND DEGRADATION
CLIMATE-CHANGE
GLOBAL CHANGE
ECOLOGICAL RESTORATION
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
article1673.pdf 703.6Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record