Cusseque/Cacuchi - The People

Domptail, Stéphanie

doi:10.7809/b-e.00250

Cited by 9 publications

(11 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Subsistence agriculture based on shifting cultivation is their main source of livelihood, with maize (Zea mays), cassava (Manihot esculenta), beans (Phaseolus vulgaris), and peanut (Arachis hypogaea) being the main crops. Other sources of income include livestock keeping, wage labour, and, notably in the nearby town of Chitembo, the retail of natural resources like charcoal, bushmeat, and honey [30].…”

Section: Study Areamentioning

confidence: 99%

Tree Species Diversity and Composition of Miombo Woodlands in South-Central Angola: A Chronosequence of Forest Recovery after Shifting Cultivation

Gonçalves

Revermann

Gomes

et al. 2017

International Journal of Forestry Research

View full text Add to dashboard Cite

The study was carried out in the Cusseque area of the Municipality of Chitembo in south-central Angola. Our objectives were to assess the floristic diversity, the species composition, and stand structure of Miombo woodlands during regeneration after shifting cultivation. A total of 40 plots of 1000 m 2 were surveyed and analyzed, corresponding to mature forests/woodlands and three fallow types of different age. The analyses were based on plot inventories of all trees with DBH ≥ 5 cm. A total of 51 woody species, 38 genera, and 19 families were recorded. The dominant family was Fabaceae, with subfamily Caesalpinioideae being very abundant. Shannon Diversity and Evenness were highest in mature forests and young fallows, while the mature forest stands showed the highest species richness. A Principal Coordinates Analysis (PCoA) showed many species shared between the intermediate fallow types, but only few species were shared with young fallows. Mature forests formed a clearly distinct group. This study shows potential pathways of forest recovery in terms of faster regeneration after agricultural abandonment and, thus, the results presented here can be used in future conservation and management plans in order to reduce the pressure on mature forests.

show abstract

Section: Study Areamentioning

confidence: 99%

Tree Species Diversity and Composition of Miombo Woodlands in South-Central Angola: A Chronosequence of Forest Recovery after Shifting Cultivation

Gonçalves

Revermann

Gomes

et al. 2017

International Journal of Forestry Research

View full text Add to dashboard Cite

show abstract

“…While trees and woody plants can be regarded to be fire resistant, the herbaceous layer is highly flammable and fires are used in addition to clearcutting for the preparation of new fields [17,18].…”

Section: Introductionmentioning

confidence: 99%

Using Annual Landsat Time Series for the Detection of Dry Forest Degradation Processes in South-Central Angola

et al. 2017

View full text Add to dashboard Cite

Dry tropical forests undergo massive conversion and degradation processes. This also holds true for the extensive Miombo forests that cover large parts of Southern Africa. While the largest proportional area can be found in Angola, the country still struggles with food shortages, insufficient medical and educational supplies, as well as the ongoing reconstruction of infrastructure after 27 years of civil war. Especially in rural areas, the local population is therefore still heavily dependent on the consumption of natural resources, as well as subsistence agriculture. This leads, on one hand, to large areas of Miombo forests being converted for cultivation purposes, but on the other hand, to degradation processes due to the selective use of forest resources. While forest conversion in south-central rural Angola has already been quantitatively described, information about forest degradation is not yet available. This is due to the history of conflicts and the therewith connected research difficulties, as well as the remote location of this area. We apply an annual time series approach using Landsat data in south-central Angola not only to assess the current degradation status of the Miombo forests, but also to derive past developments reaching back to times of armed conflicts. We use the Disturbance Index based on tasseled cap transformation to exclude external influences like inter-annual variation of rainfall. Based on this time series, linear regression is calculated for forest areas unaffected by conversion, but also for the pre-conversion period of those areas that were used for cultivation purposes during the observation time. Metrics derived from linear regression are used to classify the study area according to their dominant modification processes. We compare our results to MODIS latent integral trends and to further products to derive information on underlying drivers. Around 13% of the Miombo forests are affected by degradation processes, especially along streets, in villages, and close to existing agriculture. However, areas in presumably remote and dense forest areas are also affected to a significant extent. A comparison with MODIS derived fire ignition data shows that they are most likely affected by recurring fires and less by selective timber extraction. We confirm that areas that are used for agriculture are more heavily disturbed by selective use beforehand than those that remain unaffected by conversion. The results can be substantiated by the MODIS latent integral trends and we also show that due to extent and location, the assessment of forest conversion is most likely not sufficient to provide good estimates for the loss of natural resources.

show abstract

“…Traditional smallholder agriculture in the region follows a shifting cultivation system with slash-and-burn clearing, followed by decade long fallow periods to allow regeneration of soil fertility (Domptail et al, 2013). In the first year, forest is cut and burned and the ash is incorporated into the soil by creating earthen ridges.…”

Section: Cultivation Settingsmentioning

confidence: 99%

“…In the first year, forest is cut and burned and the ash is incorporated into the soil by creating earthen ridges. The main crop is maize, secondary crops are beans and manioc and a variety of tertiary crops include vegetables and tubers (Domptail et al, 2013). Every four to ten years (depending on soil fertility), these areas are abandoned and the household moves deeper into the forest to clear a new patch for the establishment of its next cultivation area (Domptail et al, 2013).…”

Section: Cultivation Settingsmentioning

confidence: 99%

See 1 more Smart Citation

Assessment of spatio-temporal changes of smallholder cultivation patterns in the Angolan Miombo belt using segmentation of Landsat time series

Schneibel

Stellmes

Röder

et al. 2017

Remote Sensing of Environment

View full text Add to dashboard Cite

Available online xxxxTropical dry forests provide globally important ecosystem services and host exceptionally high biodiversity. These biomes are currently under immense pressure, particularly for conversion to agriculture, and already experience high global deforestation rates. Miombo forests in Southern Angola are affected by deforestation, fragmentation and degradation, caused mainly by an increasing rural population who follows a traditional farming system of shifting cultivation with slash-and-burn agriculture. After the termination of the civil war in 2002, population growth and resettlements have accelerated the use of woody resources, selective logging and clearing for cultivation purposes and led to an exceedance of sustainability thresholds. Large scale projects are expected to put further pressure on the forests and increase the potential of conflicts regarding land resources and competition with local subsistence farming. We use an existing time series segmentation tool (LandTrendr) with a time series of Normalized Burn Ratio (NBR) data in combination with adapted temporal metrics to provide information about the dynamics of different cultivation patterns, to gain insight into historical developments and to assess temporal cultivation characteristics. We define cleared areas and cultivation time on a pixel-by-pixel basis providing temporal and spatial information on current and past changes from 1989 to 2013 using data from Landsat 5-8. Overall accuracy for the disturbance detection is 72%. We can follow the effect of armed conflicts on agricultural expansion with a drop in deforestation rate of more than 70% from 12,000 to 4000 ha per year (1994)(1995)(1996)(1997)(1998) and subsequently tripling to 12,000 ha per year again after 2002. Deforestation patterns are in accordance with previous multi-temporal studies, although time series segmentation reveals more detailed information on deforestation and cultivation dynamics. We successfully separate areas of different historic backgrounds and agricultural dynamics, e.g. areas that were severely affected during the civil war, which transition from shifting to semi-permanent and permanent systems. We provide recommendations for the assessment of agricultural dynamics in similar areas where ground data and basic information is missing.

show abstract

Cusseque/Cacuchi - The People

Abstract: Average age for total population Median education level adult (age>18) population 21 years No formal education Dependency ratio* Sex ratio for total population* 159.31 93.33 Child-woman-ratio*

Cited by 9 publications

References 0 publications

Tree Species Diversity and Composition of Miombo Woodlands in South-Central Angola: A Chronosequence of Forest Recovery after Shifting Cultivation

Tree Species Diversity and Composition of Miombo Woodlands in South-Central Angola: A Chronosequence of Forest Recovery after Shifting Cultivation

Using Annual Landsat Time Series for the Detection of Dry Forest Degradation Processes in South-Central Angola

Assessment of spatio-temporal changes of smallholder cultivation patterns in the Angolan Miombo belt using segmentation of Landsat time series

Contact Info

Product

Resources

About