Effect of degraded land rehabilitation on carbon stocks and biodiversity in semi-arid region of Northern Ethiopia

Manaye, Ashenafi; Negash, Mesele; Alebachew, Mehari

doi:10.1080/21580103.2019.1592787

Cited by 27 publications

(35 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The study indigenous AF practice declared that SOC stock increases with increasing species richness and Shannon diversity index. This is also line with the general trend that ecosystem with high biodiversity sequester more carbon in the soil than those which have lower diversity [54], [47] showed that SOC stock positive and significantly correlated with the species richness and [55] found that species richness correlated to SOC in homegarden of Kerala, India. However, the results of our study were in contrast to [53]found a negative relationship between SOC stock (depth = 0-60cm) and woody species diversity (i.e, Species richness and Shannon diversity index).…”

Section: Carbon Stocksupporting

confidence: 86%

“…for boundary planting AF practices. The SOC stock to biomass C ratio in AF practices is affected by several factors including age of the AF system that has been being practiced [49], types of tree species included and rotation age [12,36], soil type [50], elevation, climatic condition [51], silvicultural management and land-use history [47,52].…”

Section: Carbon Stockmentioning

confidence: 99%

See 1 more Smart Citation

Role of Indigenous Dryland Agroforestry System for Biodiversity Conservation and Carbon Storage in Tigray, Northern Ethiopia

Manaye¹,

Tesfamariam

Tesfaye³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

Background Agroforestry (AF) is an age-old practice in the farming system of Ethiopian dry lands. So far, several studies conducted in the ﬁeld of AF focused on system design, soil fertility management and system interactions. Less emphasis has been given to the biodiversity and climate change mitigation aspects. The objective of this paper was to evaluate the woody species diversity, biomass carbon (C) and soil organic carbon (SOC) stock of the dry land indigenous AF practices. A total of 197 smallholder farmers representing four AF practices were systematically selected from lowland, midland and highland. Woody species inventory was done on the randomly established plot of each farm. Results A total of 59 species, belonging to 48 genera and 32 families were recorded. Shannon diversity index (H’) of highland agroecology was higher in-home garden AF while in the midland and lowland the higher H’ was recorded in parkland AF. Smallholding ecosystem C stocks (sum of total biomass C and SOC 0 –60 cm) ranged from 77 to 135 Mg ha −1 .The mean total biomass C stock of woodlot AF practice (31 Mg C ha -1 ) was significantly higher than the other three AF practices. SOC stocks (0–60 cm) were greater in boundary planting (113 Mg C ha -1 ) followed by the home garden (109 Mg C ha -1 ) and woodlot (97 Mg C ha -1 ) AF practices. Conclusions The higher species richness was recorded on the home garden and parkland small household agroforestry system as compared to woodlot agroforestry systems. Likewise, the higher Shannon diversity and evenness were found on the home garden agroforestry system.. As compared to other AF systems, our study revealed that rotational woodlot and boundary planting AF practice accounts higher biomass and SOC stock, respectively. We found that biodiversity is synergy with SOC stock but can be seen as an independent agro-ecosystem function that may not directly correlated to biomass and total agroforestry carbon storage. Finally, our work concluded that home garden and boundary agroforestry can strategically promote to maximize biodiversity and carbon storage of the dry land ecosystem.

show abstract

Section: Carbon Stocksupporting

confidence: 86%

Section: Carbon Stockmentioning

confidence: 99%

Role of Indigenous Dryland Agroforestry System for Biodiversity Conservation and Carbon Storage in Tigray, Northern Ethiopia

Manaye¹,

Tesfamariam

Tesfaye³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…The stand basal area at three EXs ranges of 3.1 -7.23 m 2 ha -1 . Similar results were reported from farm exclosure in Tigray, Northern Ethiopia [25] and in semi-arid region of Northern Ethiopia [26]. The total basal area for the three EXs are far less than that within the reported range for dry forests of Ethiopia (e.g.…”

Section: Species Composition and Species Diversitysupporting

confidence: 81%

Impact of Exclosure on Species Diversity, Population Structure and Regeneration Status of Woody Plants in Lowland Northern Tigray, Ethiopia

Mohammed¹

2019

JAERI

View full text Add to dashboard Cite

Aim: This study was conducted to assessing woody plant composition, population structure and regeneration status in lowland exclosure (EX) of Northern Ethiopia. Study Design: Investigation of parameters was undertaken from 71 plots with size of 20 m x 10 m laid systematically along transect lines for vegetation data. These 200 m2 plots were used for assessment of trees with DBH >5 cm. Small quadrats of 4 m*4 m (16 m2) nested within the bigger plots was laid at the four corners and center of each plots. These were used for measuring seedling and sapling individuals. To analyze species diversity, population structure and regeneration status of woody plants were by computing abundance, density, basal area, Importance value index (IVI) and using Shannon-Weiner diversity and evenness indices. Results: According to vegetation survey result, a total of 23, 17 and 26 woody species were recorded, at Kara, Erba and Shektekli exclosures (EXs), respectively. While 8, 7 and 5 species of woody plant were in open grazing land (OGL). The total mean densities of all woody plants were found to be 1530, 1480 and 2999 individual’s ha-1 at Kara, Erba and Shektekli in EXs. Conclusion: The study suggested that the regional government have to considering EXs as useful for restoration or rehabitation strategy in the region, the vegetation in all the EXs in the study sites have a higher species composition, diversity, density, increment of basal area and regeneration woody plants than OGL, as a result of management differences in EXs. However, there are also variation on species composition, diversity, density increment of basal area and regeneration woody plants among exclosures having similar age and altitude for instance the species recorded in Erba site is lower than with other of EXs, This could be due to among local site characteristic variation and high grazing happen before Ex establishment exists. Therefore, we need to apply soil and water conservation, enrichment planting with indigenous tree species and strengthen local management institution in effectively protect the exclosure.

show abstract

“…Approximately 41% of global territory and 44% of cultivated land is dryland (Millennium Ecosystem Assessment 2005). While the semi-arid drylands are increasing triggered by human activities, combating land desertification to secure land productivity is important (Manaye et al 2019). The effects of desertification are the degradation of ecosystems, adverse effects on human health such as respiratory problems, and a reduction in cropland, leading to food availability issues.…”

Section: Introductionmentioning

confidence: 99%

Assessing environmentally sensitive land to desertification using MEDALUS method in Mongolia

Lee

Piao

Song

et al. 2019

Forest Science and Technology

View full text Add to dashboard Cite

Desertification is a global phenomenon caused by various processes, including climate change, vegetation processes, and human activities. The need to combat desertification is increasing in many countries. A reasonable assessment of the vulnerability or sensitivity of land cover to desertification at national scales is crucial to formulate appropriate strategies or policies for combating it. The main purpose of this work was to quantitatively assess the sensitivity of land cover to desertification in Mongolia using the MEDALUS approach. The MEDALUS method is a widely known technique for assessing desertification in the Mediterranean area. In this study, the method was adjusted to be applied to Mongolia, while the numerical methods of the MEDALUS remained the same. The modified MEDALUS method used nine factors from 2003 and 2008 to quantify the sensitivity of land to desertification. As a result, our study resulted in the calculation and spatial distribution of the Environmental Sensitive Area Index (ESAI), produced throughout Mongolia. In 2003, the middle region of the southern Mongolia had the highest sensitivity to desertification, while sensitivity in 2008 increased in the western area. Mongolia's area with the highest ESAI range increased approximately five times, indicating rapid desertification occurring throughout Mongolia from 2003 to 2008.

show abstract

Effect of degraded land rehabilitation on carbon stocks and biodiversity in semi-arid region of Northern Ethiopia

Cited by 27 publications

References 45 publications

Role of Indigenous Dryland Agroforestry System for Biodiversity Conservation and Carbon Storage in Tigray, Northern Ethiopia

Role of Indigenous Dryland Agroforestry System for Biodiversity Conservation and Carbon Storage in Tigray, Northern Ethiopia

Impact of Exclosure on Species Diversity, Population Structure and Regeneration Status of Woody Plants in Lowland Northern Tigray, Ethiopia

Assessing environmentally sensitive land to desertification using MEDALUS method in Mongolia

Contact Info

Product

Resources

About