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Behera, M. D.
- Indian Brahmaputra Valley Offers Significant Potential for Cultivation of Rubber Trees under Changed Climate
Abstract Views :181 |
PDF Views:85
Authors
Affiliations
1 Regional Research Station, Rubber Research Institute of India, Agartala 799 006, IN
2 Centre for Oceans, Rivers, Atmosphere & Land Sciences, Indian Institute of Technology, Kharagpur 721 302, IN
3 Rubber Research Institute of India, Kottayam 686 009, IN
1 Regional Research Station, Rubber Research Institute of India, Agartala 799 006, IN
2 Centre for Oceans, Rivers, Atmosphere & Land Sciences, Indian Institute of Technology, Kharagpur 721 302, IN
3 Rubber Research Institute of India, Kottayam 686 009, IN
Source
Current Science, Vol 107, No 3 (2014), Pagination: 461-469Abstract
In a warming world, species distribution models have become a useful tool for predicting plausible shifts of a species occurrence enforced by climate change. Using maximum entropy (Maxent) model, we analysed present and future distribution patterns of rubber tree (Hevea brasiliensis) in two distinct bio-geographical regions of India: the Western Ghats having a good distribution of rubber plantations at present and the Brahmaputra valley, where rubber trees are recently being cultivated. The model-derived suitable regions of the Western Ghats and Brahmaputra valley provided good conformity with a satellite-derived rubber plantation distribution map. Annual range of temperature and mean temperature in the coldest months, temperature seasonality and rainfall in the warmest quarter would be the major decisive variables in the distribution of this species as revealed by the area under receiver operating curve. Interestingly, we predict that more areas will become suitable for rubber cultivation by the middle of the 21st century in the Brahmaputra valley, while some areas under current cultivation may become partially unsuitable for this species in the Western Ghats. This result can help planners in deriving a comprehensive rubber plantation policy for India considering the existing land-use scenarios.Keywords
Climate Change, Maximum Entropy, Rubber Plantations, Species Distribution Model.Full Text
- Increase in Agricultural Patch Contiguity over the past three Decades in Ganga River Basin, India
Abstract Views :206 |
PDF Views:96
Authors
M. D. Behera
1,
N. Patidar
2,
V. S. Chitale
3,
N. Behera
2,
D. Gupta
2,
S. Matin
1,
V. Tare
4,
S. N. Panda
2,
D. J. Sen
5
Affiliations
1 Spatial Analysis and Modelling Laboratory, Centre for Oceans, Rivers, Atmosphere and Land Sciences, IN
2 School of Water Resources, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721 302, IN
3 Spatial Analysis and Modelling Laboratory, Centre for Oceans, Rivers, Atmosphere and Land Sciences
4 Department of Civil Engineering, Indian Institute of Technology Kanpur, Kanpur 208 016, IN
5 Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721 302, IN
1 Spatial Analysis and Modelling Laboratory, Centre for Oceans, Rivers, Atmosphere and Land Sciences, IN
2 School of Water Resources, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721 302, IN
3 Spatial Analysis and Modelling Laboratory, Centre for Oceans, Rivers, Atmosphere and Land Sciences
4 Department of Civil Engineering, Indian Institute of Technology Kanpur, Kanpur 208 016, IN
5 Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721 302, IN
Source
Current Science, Vol 107, No 3 (2014), Pagination: 502-511Abstract
Ganga River Basin (GRB) is the second most populous river basin in the world, which has been undergoing rapid land-use change during the last few decades. Here, we analyse the landscape dynamics in Indian GRB (IGRB) using three indices, i.e. class area, mean patch size and number of patches for 14 land-use and land-cover (LULC) classes using multi-temporal Landsat satellite datasets of 1975 and 2010. Major change was observed with the expansion of agricultural lands and human settlements and depletion of forests. Agricultural lands covered the highest area (>75%), where low to medium-sized patches have increased and patches with larger size have been slightly reduced in size over past decades. The highest increase in percentage of built-up land has been appropriately captured on medium-resolution satellite imageries using visual interpretation technique. Degradation and loss of forest areas were reported in terms of landscape indices; however, the increase of plantation is a positive sign in the basin. In general, we observed aggregation of agricultural patches and reduction of forest patches in small to medium patch sizes. We argue the utility of 'onscreen visual interpretation' technique in favour of LULC mapping to achieve absolute accuracy in such a heterogeneous landscape, as it incorporates interpreter's knowledge. We appreciate the free availability of Landsat imageries having very good radiometry that has opened the doors for exercises with minimum cost. Located in one of the most fertile regions of India, the basin accommodates more than 400 million human population. This has led to expansion of agriculture and built-up land at the cost of forest and other land covers. Understanding landscape dynamics could help in designing an effective land-use policy for IGRB.Keywords
Agricultural Patch, Landsat, Landscape Dynamics, Land Use Change, Visual Interpretation.Full Text
- Global Biodiversity Hotspots in India: Significant yet under Studied
Abstract Views :275 |
PDF Views:85
Authors
Affiliations
1 Centre for Oceans, Rivers, Atmosphere and Land Sciences, Indian Institute of Technology, Kharagpur 721 302, IN
2 University Centre for Earth and Space Sciences, University of Hyderabad, Hyderabad 500 046, IN
1 Centre for Oceans, Rivers, Atmosphere and Land Sciences, Indian Institute of Technology, Kharagpur 721 302, IN
2 University Centre for Earth and Space Sciences, University of Hyderabad, Hyderabad 500 046, IN
Source
Current Science, Vol 108, No 2 (2015), Pagination: 149-150Abstract
No Abstract.Full Text
- Biodiversity and Climate Change
Abstract Views :249 |
PDF Views:75
Authors
Affiliations
1 Centre for Oceans, Rivers, Atmosphere and Land Sciences, IIT Kharagpur, Kharagpur 721 302, IN
1 Centre for Oceans, Rivers, Atmosphere and Land Sciences, IIT Kharagpur, Kharagpur 721 302, IN
Source
Current Science, Vol 115, No 4 (2018), Pagination: 608-609Abstract
Biodiversity is continually transferred by a changing climate. Conditions change across the face of the planet, sometimes slowly, sometimes in larger increments leading to rearrangements of biological associations. Now, a new type of climate change brought about by human activities is being added to this natural variability, threatening to accelerate the loss of biodiversity already underway due to other human stressors. The carbon cycle and the water cycle, arguably the two most important large-scale processes for life on earth, both depend on biodiversity at genetic, species and ecosystem levels and can yield feedbacks to climate change. Maintaining and restoring healthy ecosystems plays a key role in adapting to and mitigating climate change through biodiversity conservation, sustainable use and sustainable land management and yields multiple environmental, economic and social benefits.Full Text
- Congruence of Endemism among Four Global Biodiversity Hotspots in India
Abstract Views :272 |
PDF Views:81
Authors
Affiliations
1 Centre for Oceans, Rivers, Atmosphere and Land Sciences, Indian Institute of Technology, Kharagpur 721 302, IN
2 International Crops Research Institute for the Semi-Arid Tropics, Hyderabad 502 324, IN
1 Centre for Oceans, Rivers, Atmosphere and Land Sciences, Indian Institute of Technology, Kharagpur 721 302, IN
2 International Crops Research Institute for the Semi-Arid Tropics, Hyderabad 502 324, IN
Source
Current Science, Vol 118, No 1 (2020), Pagination: 9-9Abstract
Thirty-six global biodiversity hotspots harbour high concentrations of species and endemism1. India accommodates in parts four hotspots, viz. the Himalaya (44.37% of global hotspot), Indo-Burma (5.13%), Sundaland (1.28%) and the Western Ghats (64.95%) that exhibit high levels of floral and faunal diversity. Based on data on endemic plants collected, we present hotspot-wise congruence in plant endemism using field sampling data from 1264, 1114, 78 and 1004 plots in the Himalaya, Indo-Burma, Sundaland and the Western Ghats respectively, using nested quadrates of 0.04 ha laid based on stratified random sampling2.Full Text
References
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- Recent rise in wildfires in community forests and other natural vegetation: geospatial basis
Abstract Views :195 |
PDF Views:74
Authors
Affiliations
1 Centre for Oceans, Rivers, Atmosphere and Land Sciences, Indian Institute of Technology, Kharagpur 721 302, India
2 Mining Engineering Department, Indian Institute of Technology, Kharagpur 721 302, India
1 Centre for Oceans, Rivers, Atmosphere and Land Sciences, Indian Institute of Technology, Kharagpur 721 302, India
2 Mining Engineering Department, Indian Institute of Technology, Kharagpur 721 302, India
Source
Current Science, Vol 121, No 7 (2021), Pagination: 891-893Abstract
No Abstract.Full Text
References
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- Bhattacharjee, R., Choubey, A., Das, N., Ohri, A. and Gaur, S., J. Indian Soc. Remote Sensing, 2020, 1–12.
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- Das, P., Mudi, S., Behera, M. D., Barik, S. K., Mishra, D. R. and Roy, P. S., Remote Sensing, 2021, 13, 1066.
- Biodiversity and Climate Change: Sustainable Development Perspective
Abstract Views :46 |
PDF Views:37
Authors
Affiliations
1 Centre for Ocean, River, Atmosphere and Land Sciences, Indian Institute of Technology, Kharagpur 721 302, IN
1 Centre for Ocean, River, Atmosphere and Land Sciences, Indian Institute of Technology, Kharagpur 721 302, IN
Source
Current Science, Vol 125, No 5 (2023), Pagination: 473-474Abstract
No Abstract.Keywords
No Keywords.Full Text