The role of enclosures in the recovery of woody vegetation in degraded dryland hillsides of central and northern Ethiopia

Mengistu, Tefera; Teketay, Demel; Hultén, Håkan; Yemshaw, Yonas

doi:10.1016/j.jaridenv.2004.03.014

Cited by 185 publications

(185 citation statements)

References 13 publications

Supporting

Mentioning

145

Contrasting

Unclassified

Order By: Relevance

“…Mountain closure takes full use of the ability of natural ecosystem recovery and accelerates the growth of vegetation, which is considered a fast, cheap and lenient method for the rehabilitation of degraded lands (Mengistu et al, 2005). Nevertheless, Cheng et al (2014) states that long-term grazing exclusion has a negative impact on species generation and ecosystem stability, indicating that, to avoid degradation, management of the natural resources in the enclosures has to keep the balance between growth and harvest.…”

Section: Discussionmentioning

confidence: 99%

Vegetation changes in recent large-scale ecological restoration projects and subsequent impact on water resources in China's Loess Plateau

Liang

et al. 2016

Science of The Total Environment

248

103

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Vegetation changes in recent large-scale ecological restoration projects and subsequent impact on water resources in China's Loess Plateau

Liang

et al. 2016

Science of The Total Environment

248

103

View full text Add to dashboard Cite

“…Area exclosures and assisted natural regeneration (ANR) are passive forms of restoration, which are relatively simple and low-cost to implement in rehabilitation of degraded dry forests. They aim at protecting rehabilitation sites from human and animal disturbances enhance natural regeneration, plant and animal diversity, vegetation biomass, and improve soil physical and chemical properties (Mengistu et al 2005;Mekuria et al 2007;Shono 2007;Yirdaw et al 2014).…”

Section: Rehabilitation Of Degraded Dry Forest Landscapesmentioning

confidence: 99%

“…However, active restoration methods are costly, potentially risky and may require sufficient ecological knowledge (Lamb 2005;Marques et al 2016), which seems to be lacking particularly in the tropical and subtropical dry forests (Blackie et al 2014). In sites with a heavily degraded seed bank, enrichment planting of late-successional or rare species is necessary in order to speed up the recovery process (Mengistu et al 2005;Marques et al 2016). In active restoration of dry forests, native species and provenances which are adapted to local environmental conditions (particularly high water use efficiency and fire tolerance) should be favoured, whenever possible (Vallejo et al 2012); ITTO (2002) offers a list of promising species that can be used for restoration of tropical dry forests.…”

Section: Rehabilitation Of Degraded Dry Forest Landscapesmentioning

confidence: 99%

Rehabilitation of degraded dryland ecosystems – review

Yirdaw¹,

Tigabu²,

Monge³

2017

Silva Fenn.

114

View full text Add to dashboard Cite

Highlights• The prospect of restoring degraded drylands is technically promising.• The forest landscape restoration concept can be used as the overarching rehabilitation framework.• Development of process-based models that forecast rehabilitation outcomes is needed.• Rehabilitation methodologies developed for moist areas are not necessarily suitable for drylands.• More data is needed on cost-benefit analysis of rehabilitation interventions. AbstractLand 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 processbased 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.

show abstract

“…In the case of Ethiopia data regarding the contribution of dry forests to rural households are still limited [5] and information to influence policy making remains scarce. These are the largest forest type in many African countries [15]. In Ethiopia, dry forests are the most important forest types both in terms of area coverage and their contribution to export earnings through gums and resins [16].…”

Section: Introductionmentioning

confidence: 99%

Contribution of Dry Forest Products to Household Income and Determinants of Forest Income Levels in the Northwestern and Southern Lowlands of Ethiopia

Teshome¹,

Kassa²,

Mohammed³

et al. 2015

View full text Add to dashboard Cite

Dry forests are dominant vegetation types in East Africa. The contribution of these resources to local livelihoods is poorly understood. This study was conducted to quantify the contribution of dry forest products to household income and to identify factors that influence forest income level in the northwestern and southern lowlands of Ethiopia. Data was collected using key informant interviews, focus group discussions and formal survey administered to 428 randomly selected households from representative districts in three regional states. Regression analysis, one way ANOVA, chi-square and t-tests were used to analyze the quantitative data. The major sources of household income are crop production, livestock farming, forest products, off-and non-farm activities, and remittances and aid, contributing respectively to 46.3%, 27.6%, 17.0%, 6.3% and 2.8% of the household income. The relative importance of forest income to total household income varied significantly across wellbeing categories (P < 0.001), representing 31.8%, 15.5% and 9.9% respectively for poor, medium and rich households and also between male headed (16.1%) and female headed (23.5%) households(P < 0.001). In terms of magnitude, however, forest income differed significantly (P < 0.05) with wealth category of households but not with the gender of the household head. Forest income level was significantly and positively influenced by family size (P < 0.01) and being a member of gums and resins producers cooperative (P < 0.01), while distance to the forest resource (P < 0.01) and being in Tigray or Amhara Regional States (Oromia being reference state) negatively and significantly affected forest income levels of households. Attempts to promote sustainable management of dry forests should recognize these factors that influence access to forests and forest income level of different members of the community to ensure equita- B. Teshome et al. 332 ble responsibility and benefit sharing arrangements and inclusive participation for better livelihoods and conservation outcomes.

show abstract

The role of enclosures in the recovery of woody vegetation in degraded dryland hillsides of central and northern Ethiopia

Cited by 185 publications

References 13 publications

Vegetation changes in recent large-scale ecological restoration projects and subsequent impact on water resources in China's Loess Plateau

Vegetation changes in recent large-scale ecological restoration projects and subsequent impact on water resources in China's Loess Plateau

Rehabilitation of degraded dryland ecosystems – review

Contribution of Dry Forest Products to Household Income and Determinants of Forest Income Levels in the Northwestern and Southern Lowlands of Ethiopia

Contact Info

Product

Resources

About