International Journal of Forestry Research

The researcher conducted a review of 83 articles published between 2011 and 2021 to determine the nontimber forest products (NTFPs) income contribution and usage types based on spatial and temporal patterns. The study used a search, synthesis, appraisal, and analysis framework for review. The review included articles that only focused on the contributions of NTFPs for livelihood income and NTFPs usage type, while others not related to these two topics were excluded. For its literature search, more than half of the articles used Google Scholar, followed by Research4life, Scopus/Elsevier, EMBASE, and PubMed, respectively. In this study, excluding papers that (i) did not provide evidence on the income contribution of NTFPs, (ii) did not include articles that did not clearly explain the NTFPs use types, and (iii) were published before 2011, the reviewer was able to reduce the number of included articles (eligibility criteria or inclusion and exclusion criteria). 83 article papers were reviewed for the current review. The majority of the research for this review was carried out in India (19%), Ethiopia (13%), and Nigeria (11%). India was the first of the 17 both Asian and African countries to do research on the NTFPs’ contribution to rural household income and type of use. NTFPs contribute significantly to rural household revenue in 17 countries, ranging from a minimum of 9.5% in Zambia to a maximum of 40.19% in Myanmar. The average percentage of revenue from NTFPs across the 17 nations was 23.56%. Wild fruit, wild vegetables, medicinal plants, firewood, and crafts were the five NTFP usage types that were used by people in every country studied. Despite the fact that different countries utilize different types of NTFPs, the most commonly used types of NTFPs do not differ statistically (). To prevent overexploitation, those top five NTFPs must be conserved as they gather across the regions. NTFP collection is a significant source of revenue for rural poor and people who live in and around the forest. There are many types of NTFPs in both Asian and African countries. So, this study shows that the rural people depend on the forest product and get many benefits from the forest especially in the NTFP usage type. In order to secure livelihood stability in this global biodiversity hotspot and to preserve plant and animal diversity, the cultivation and scientific harvesting of NTFPs are urgently required. It is necessary to increase capacity by teaching NTFP users how, when, and how much to harvest.

The concerns about climate change in recent decades have heightened the need for effective methods for assessing and reporting forest biomass and Carbon Stocks (CS) at local, national, continental, and global scales. Accurate assessment of Aboveground Biomass (AGB) is critical for the sustainable management of forests, especially in the Chure region, a fragile and young mountainous in the lesser Himalaya of Nepal. This paper presents the modeling and mapping approach and shows how medium-resolution Sentinel-2 multispectral instrument (MSI) data can be used instead of hyperspectral data in inaccessible areas of the Chure region. The data were collected and analyzed from 72 circular sample plots. 60% (43 random sample plots) were used to create the model, while the remaining 40% (29 plots) were used for model validation. This study involved calculating 12 different vegetation indices and correlating them with plot-level AGB. Five models, including linear, logarithmic, quadratic, power, and exponential, were created, but the best model was found to be the quadratic model using normalized difference vegetation indices (NDVIs) with an R² value of 0.777 and a correlation coefficient of 0.881. The model’s AIC and BIC values were 313.60 and 320.65, respectively. The validity of the model was performed using observed and predicted AGB values, resulting in an r value of 0.9128, an R² value of 0.8332, and an RMSE value of 10.7657 t·h⁻¹. Finally, the developed regression equation was used to map AGB in the study area. The AGB per pixel ranges from 0 to 129.18 t·h⁻¹, whereas the amount of CS ranges from 0 to 61.01 t·h⁻¹. Among the different vegetation indices used in the study, NDVI was found to be more precise in estimating and mapping biomass and carbon stocks in this study. Therefore, the study recommends using the quadratic model of NDVI for accurate estimation of AGB and CS in the Chure region of Sainamaina municipality.

Wild edible plants are vital for the survival and sustainable livelihoods of rural people of Ethiopia. Thus, this study compiled wild edible plants, their use, threats, and management practices in Metema District, northwestern Ethiopia. Eight sample kebeles were selected purposively based on vegetation coverage and key informants availability. A total of 128 informants were selected using purposive and random sampling techniques. Data were collected using individual interviews, guided field walks, focus group discussion, and market surveys through semistructured questionnaires. Ethnobotanical data collected from the informants were summarized by descriptive statistics, and further verified by using informant consensus, preference, and direct matrix ranking. Knowledge difference among age and sex groups was evaluated by independent sample t-test. A total of 44 wild edible plant species distributed in 34 genera and 25 families were documented. Most (88.64%) of these plant species were found in the wild habitat. Fabaceae and Moraceae accounted for higher proportion of edible plant species. Trees were the dominant habit (59.09%). From the total recorded wild edible plants, 33 (75%) species were used as supplementary foods and 11 (25%) species were used during famine. Fruits were the most edible plant parts (66%) and raw fresh forms were the main conditions of consumption (81.8%). Diospyros abyssinica was the most cited (60.94%) and first ranked. Some edible species such as Adansonia digitata and Balanites aegyptiaca were marketable. Ziziphus spina-christi was found the most multipurpose wild edible plant species. Most of the species (33, 75%) were used as animal fodder followed with traditional medicines (25, 56.82%) and firewood (20, 45.45%). Tamarindus indica, Moringa stenopetala, Balanites aegyptiaca, Grewia ferruginea, Corchorus olitorius, and Cordia africana had nutraceutical values. Significant knowledge differences () were obtained among sexes and age groups of informants on the number of wild edible plant species they listed. As a result of their multiple roles, wild edible plants are threatened by various anthropogenic activities. Despite this, Metema District still supports good numbers of wild edible plants from which the poor inhabitants complement their basic needs by consuming and marketing them. For sustainable utilization, conservation, value addition, and market linkage practices shall be strengthened to improve the livelihoods of local people and sustainable forest management.

The Zalon Taung National Park (ZNP) in Banmauk township, northwest Myanmar, is a recently established protected area to protect the area’s cultural value, ecosystems, native flora, and wildlife. This research examined the vegetation structure, tree species diversity, and composition within (ZNP) and outside (the Banmauk unclassified forest (BUCF)) the park to inform conservation and resource utilization for sustainable management. We conducted the vegetation survey in April-May of 2022 by setting up 34 sample plots (40 × 40 meters) using a random sampling approach. We used stand density, basal area, Shannon–Wiener diversity index, Simpson index, Pielou's evenness, Fisher’s α diversity, and Importance Value Index (IVI) to determine the forest structure and tree diversity. A total of 116 tree species (≥10 cm·dbh), representing 87 genera and 48 families, were identified. The ZNP sample plots had a slightly higher stand density (201 individuals ha⁻¹) and basal area (20.6 m²·ha⁻¹) than BUCF (stand density: 191 individuals ha⁻¹ and basal area: 15.0 m²·ha⁻¹), which is accessible to collect firewood and timber extraction by residents. The reverse J-shaped pattern of the population structure indicated that the stands’ populations were progressive and healthy. BUCF featured the most Verbenaceae (12.9%) and the ZNP the most Euphorbiaceae (7.2%) families. Protium serratum had the highest IVI in the BUCF (26.91%) and Dipterocarpus alatus (18.39%) in the ZNP. Dipterocarpus alatus and Dalbergia oliveri (IUCN Red List-endangered species) dominate in BUCF and require special attention in conservation planning. In the ZNP, previous logging activity dramatically reduced the relative density and the IVI values of commercially important species such as Tectona grandis, Dalbergia oliveri, and Protium serratum. According to the NMDS ordination, differences in tree species compositions were significantly linked with elevation, the intensity of logging, and distance to the village and road. The results will help park managers plan effective land use to promote biodiversity conservation and local livelihoods.

Owing to its variable topographic features, Ethiopia is endowed with rich biological resources. However, nowadays, these vital resources, mainly forests, are declining alarmingly, largely, due to agricultural expansion and energy consumption. This study was conducted at Gosh-Beret forest with the objective of investigating the status of forest species. Fifty-one main plots, spaced at a 100 m interval, were laid on north-south oriented transects. Within the main plots, five subplots, at each corner and center, were set to collect data for juveniles. In each plot, individuals of each woody species were identified and recorded. Percent cover abundance of each woody species per plot was genuinely estimated, which was later converted into the modified Braun–Blanquet scale. For each mature woody species, diameters at breast height (DBH ≥ 2 cm) were measured. Hierarchical cluster analysis was performed to identify community types. The Shannon–Wiener diversity index and Sorensen’s similarity coefficient were used to compare the species diversity and composition among communities, respectively. The structure and regeneration status of the forest species were analyzed using structural parameters and size-class ratios, respectively. A total of 52 woody species distributed in 35 families were recorded. Fabaceae, Euphorbiaceae, and Asteraceae were the most dominant families with 4 species each. The overall species diversity of the forest was 2.6, and five community types were generated from cluster analysis. In the study forest, frequency and density of species decrease with increasing frequency and density classes. Likewise, density of individuals in each class decreases as DBH classes increase. The total basal area of the forest was 19.81 m²ha⁻¹, and the forest was at fair regeneration status with species having small IVI values and few/no seedlings. Therefore, immediate conservation measures are required to save species with small IVI values and few/no seedlings.

Agroforestry has the potential to contribute to the improvement of household livelihood, since its various forms offer multiple alternatives and opportunities to farmers. This study assessed agroforestry practice in Mukura sector, Huye district, Rwanda. A sample of 100 households was selected by stage sampling, randomly choosing four cells and two villages per cell in Mukura Sector. Face-to-face interview was dispensed to household heads, and data were collected on agroforestry practices, on-farm tree species, tree spatial arrangements, tree products, and the adoption rate. Woody species diversity and similarity were determined by using Shannon–Weiner diversity and Sørensen’s indices, respectively. Sixty percent of the farmers practiced agroforestry. Ten woody species were observed to grow on farm, providing varied products of timber, firewood, food and fodder, stakes for climbing beans, and income. Low adoption of agroforestry practice was reported resulting from small land, land tenure, ignorance, unavailability of tree seedlings, and the avoidance of tree-crop competition. On-farm tree diversity was observed to be higher than several other sites in Rwanda. The different cells of Mukura Sector grow the same woody species on the farms as demonstrated by reasonably high indices of similarity. We recommend that efforts be made to reinforce extension services to improve farmers’ awareness on the contribution of agroforestry to their social wellbeing. Ways of making seedlings available for planting should also be explored.