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Document18 years of continuous forest monitoring; lessons learnt and experiences
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Monitoring forests is key to ensure sustainable natural resources conservation. Land cover has been the most widely used product to measure how forests has been changing. Zimbabwe first produced its national land cover map in 1992 and it has been used as the basis for forest resources monitoring. Given the power of Google earth engine, in 2017 another land cover map was produced. The twenty-five years of forest monitoring has shown a remarkable decrease in forest area due to mainly agriculture expansion. Sharing of land cover information has evolved over the years from paper based to digital platform. The Google earth engine app was produced from 2017 land cover map and it has increased the wide use of forest information and data. The change between 1992 and 2017 was obtained after subtracting the two maps. The forest loss was then analysed using Collect earth online, a total 3500 plots were analysed using high resolution satellite imagery. Keywords: Deforestation and forest degradation ID: 3486922 -
ArticleAddressing the challenge of deforestation in Sri Lanka: Potentials of sustainable forest governance through policy and institutional integration
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.As one of the world’s 35 biodiversity hotspots, Sri Lanka indicates a high level of endemicity in most taxonomic groups and a considerable number of threatened species (Voluntary National Review, 2018). However, the forest cover in Sri Lanka has decreased from 40% to 29.7% during the period from 1940 to 2017 (UN-REDD, 2017). Deforestation has become a challenge due to increased population, high demand for land and major development projects. Although there are several policies to improve sustainable forest governance in Sri Lanka, certain fragmentations and clashes can be identified when they reach their implementation stage. The national level institutions such as the Forest Department and the Department of Wildlife Conservation face several accountability clashes with other government institutions that consider large scale development as a top policy priority. The result is the rapid deforestation and forest degradation. This study focuses on why the forest governance in Sri Lanka experiences certain difficulties in addressing the challenge of deforestation and explores the potentials of sustainable forest governance through policy and institutional integration. The research was based on qualitative data gathered conducting semi-structured interviews with officials and representatives of the forest- related national level institutions, provincial and local government bodies, environmental non- governmental organizations and community-based organizations. Additional data were collected observing deforestation in lowland, montane, dry zone, monsoon and mangrove forests in Sri Lanka during the year 2019/2020. The findings suggest that the major barrier against sustainable forest governance in Sri Lanka is politically-influenced arbitrary implementation of sudden ‘development’ policies by the government that encourage deforestation. The forest governance policies and the forest-related institutionsneed to be integrated towards addressing the challenge of deforestation. Keywords: deforestation, sustainable forest governance, policy integration, Sri Lanka ID: 3486425 -
ArticleImpact of rubber tree plantations chronosequence on soil fertility and soil organic carbon stocks, Gurafarda District, Southwest Ethiopia
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Rubber tree is one of the important commercial commodities in the globe. This study was conducted to examine the change in soil fertility and soil organic carbon stocks following conversion of forest to rubber plantation of different ages (5, 10, 15, 20 and 25 years) and coffee agroforestry. The field experiment was conducted in Guraferda district, Southwest Ethiopia. The soil samples were collected from 20× 20 m 2 plots at 30 cm depth, with three replicates at a 100 m interval. A total of 42 soil samples were taken from the three land-use types. The soil moisture content (MC), porosity, soil pH, organic carbon (OC), total nitrogen (N), available phosphorous (P), exchangeable bases, CEC (cation exchange capacity) and base saturation (B)S content of the NF (natural forest), CA(coffee agroforestry) and old age rubber plantation (RP15, RP20 and RP25) were higher than the early years of rubber plantation (RP5 and RP10). The highest soil organic carbon stocks (SOC) were recorded in NF (114.3 Mg ha -1 ), CA (112.2 Mg ha -1 ), RP25 (98.5 Mg ha -1 ) and RP20 (97.8 Mg ha -1 ). The SOC loss because of conversion of NF to RP5 (11.0 Mg ha -1 y -1), RP10 (5.3 Mg ha -1 y -1 ), RP15 (2.3 Mg ha -1 y -1 ), RP20 (0.8 Mg ha -1 y -1 ), RP25 (0.6 Mg ha -1 y -1 ) and CA (0.1 Mg ha -1 y -1 ). In general, old age rubber plantation (RP20 and RP25) showed proportional levels of soil fertility and soil organic carbon stocks compared with the natural forest and the coffee agroforestry. Since all physico-chemical characteristics were low at the early years of rubber plantation, we recommend to supplement significant proportions of nutrient to the early years of rubber plantation (0-10 years). Keywords: Rubber plantation, Land use types, Physico-chemical characteristics, Soil organic carbon stocks, Organic carbon loss. ID: 3605459
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