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ArticleDynamics of the Maniyari River and its meandering nature inside Achankmar Tiger Reserve Area, Chhattisgarh, India: A geospatial analysis
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.The Achanakmar Tiger Reserve (ATR) is an integral part of Achanakmar-Amarkantak Biosphere reserve (AABR) covering a total area of 914.017 sq. km. The Maniyari River flowing through the reserve area is known to be its life line. It originates from core zone (Sihawal sagar) of ATR and merges in Seonath river of Mahanadi Basin. It flows through Mungeli and Bilaspur districts for about 105 km. This river provides water seasonally to its catchment (6-8 months) and flows more than half of its length (approx. 60 km) inside the reserve area. Its catchment area has rich biodiversity of tree species. Shorea robusta being the dominant tree species of the area followed by tree species like Terminalia tomentosa, Diospyros melanoxylon, Adina cordifolia, Pterocarpus marsupium, Madhuca indica, Anogeissus latifolia, Tectona grandis (plantation) and Bamboo (Dendrocalamus strictus). A geospatial analysis was performed to understand the course of Maniyari River inside ATR area encompassing a period of fourteen years during 2000 to 2013. Imageries from Indian Remote Sensing (IRS) satellite 1D and P6 images for years 2000, 2004, 2008, 2010 and 2013 and Survey of India toposheets were analyzed to study the changes in planform characteristics of Maniyari River. The meander shift of the river has been delineated taking into consideration the reach’s R1 (11.61 km), R2 (11.19 km), R3 (5.33 km) and R4 (5.02 km) respectively. Sinuosity Index (SI) for different reaches have been calculated and evaluated. The SI ranged from 1.40 to 1.63, 1.20 to 1.29, 1.17 to 1.37, and 1.20 to 1.49 in R1, R2, R3 and R4 respectively and the amount of shifting was analyzed taking the year 2000 as a base year. The overall SI for all the reach’s ranges between 1.30 to 1.36.The present study will be helpful to understand the river dynamics as well as to maintain the flow of Maniyari River and prevent bank line erosion. The study will be helpful for the conservation of river flow and its tributaries in the ATR area of Central India. Keywords: Achanakmar Tiger Reserve (ATR), River Maniyari, Meander, LISS III, Sinuosity Index, Geospatial analysis. ID:3487479 -
ArticleLand use and land use changes by the farmers from mulberry (Morus alba) plantations to green forest tree based farming for income growth and sustainability in Malda district of India
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Malda district was famous for two economic activities viz. Mango (Mangifera indica) cultivation and rearing mulberry silkworm (Bombyx mori). Earlier silkworm rearing was a flourishing cottage industry and every households of Kaliachak block reared silkworm for cocoon production. It was the major livelihood of rural farmers but they suffered heavily due to cheap import of silk from China. Thus, the backbone of farmers was crippled, hence they started cultivating various trees in mulberry fields along with agricultural crops for sustaining their livelihood. Present study was undertaken to know how farmers adjusted to new situation, their knowledge about trees, income growth and sustainability. It was observed that mulberry was raised as herb and leaves were fed to the silkworm larvae at home. Traditionally farmers planted Dalbergia sissoo trees on the border of mulberry fields but later on they started planting other trees. A few farmers uprooted their mulberry bushes and converted to Swietenia macrophylla plantation. Some farmers converted their entire land to Mango and Litchi chinensis orchards for long term gains. Besides, some traditional farmers, around 10% still continued with silkworm rearing for their livelihood security but planted few rows of trees like Tectona grandis, D.sissoo, Bombax ceiba, S.macrophylla and Acacia auriculiformis. Few big farmers converted their mulberry fields into ponds for fishery, however, planted Mango and Sissoo on border. The first crops inside the tree plantations were Maize, Papaya and Vegetables which gave farmers quick income. Later, Banana and Citrus were planted. These activities are still continuing, but timber harvesting has also started which will give high returns. These forest tree based land changes not only provided sustainable income growth to farmers, but also made them drought resilient leading to climate change mitigation and adaptation besides conserving plant biodiversity. Key words: Landscape management, Agriculture, Biodiversity conservation ID: 3475637 -
ArticleLand use and land cover changes and the link to land degradation, Ethiopia
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Accurate information on land use and land cover change (LULCC) is critical for understanding the causes of change and for developing effective policies and strategies to slow and reverse land degradation. In Ethiopia, the speed and scale of LULCC has been accelerated in the last 3–4 decades of the 21st century. The objectives of this study were to assess: (i) the extent of LULCC and normalized difference vegetation index (NDVI) and the link to land degradation; (ii) the causes of LULCC and implication for climate change adaptation. Satellite images analysis was used to detect the change in area and vegetation index, and farmers’ perception to see the magnitude of LULCC dynamics and causes of deforestation. Correlations were made between vegetation index with dry season rainfall and temperature. The analysis of confusion matrix of LULC classification showed 87% accuracy with Kappa coefficient of 0.84. In the period 1986–2016, agriculture and settlement areas have increased by 250% and 618%, respectively. On the other hand, forests and woodlands have decreased by 72% and 84%, respectively. These were also validated with the farmers’ quantification results with similar trends. Different causes have played roles in the dynamics of LULCC. The results showed that vegetation dynamics vary both spatially and temporally against precipitation and temperature. This study informs the need to focus on halting deforestation and development of alternative energy sources. It further helps to design future land management directions, landscape based adaptation and rehabilitation strategies to be considered by policy makers. Keywords: Adaptive and integrated management, Agriculture, Biodiversity, Climate change,landscape management ID: 3599543
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