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Development of deforestation and land cover database for Bhutan (1930–2014)

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Abstract

Bhutan is a mountainous country located in the Himalayan biodiversity hotspot. This study has quantified the total area under land cover types, estimated the rate of forest cover change, analyzed the changes across forest types, and modeled forest cover change hotpots in Bhutan. The topographical maps and satellite remote sensing images were analyzed to get the spatial patterns of forest and associated land cover changes over the past eight decades (1930–1977–1987–1995–2005–2014). Forest is the largest land cover in Bhutan and constitutes 68.3% of the total geographical area in 2014. Subtropical broad leaved hill forest is predominant type occupies 34.1% of forest area in Bhutan, followed by montane dry temperate (20.9%), montane wet temperate (18.9%), Himalayan moist temperate (10%), and tropical moist sal (8.1%) in 2014. The major forest cover loss is observed in subtropical broad leaved hill forest (64.5 km2) and moist sal forest (9.9 km2) from 1977 to 2014. The deforested areas have mainly been converted into agriculture and contributed for 60.9% of forest loss from 1930 to 2014. In spite of major decline of forest cover in time interval of 1930–1977, there is no net rate of deforestation is recorded in Bhutan since 1995. Forest cover change analysis has been carried out to evaluate the conservation effectiveness in “Protected Areas” of Bhutan. Hotspots that have undergone high transformation in forest cover for afforestation and deforestation were highlighted in the study for conservation prioritisation. Forest conservation policies in Bhutan are highly effective in controlling deforestation as compared to neighboring Asian countries and such service would help in mitigating climate change.

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Acknowledgements

The present work has been carried out as part of ISRO’s National Carbon Project. We gratefully acknowledge ISRO-DOS Geosphere Biosphere Programme for supporting this research.

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Authors and Affiliations

  1. National Remote Sensing Centre, Indian Space Research Organisation, Balanagar, Hyderabad, 500 037, India

    C. Sudhakar Reddy, K. V. Satish, C. S. Jha, P. G. Diwakar, Y. V. N. Krishna Murthy & V. K. Dadhwal

  2. Indian Space Research Organisation, Antariksh Bhavan, New BEL Road, Bengaluru, Karnataka, 560 231, India

    P. G. Diwakar

  3. Indian Institute of Space Science and Technology, Valiamala, Thiruvananthapuram, Kerala, 695 547, India

    V. K. Dadhwal

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  1. C. Sudhakar Reddy
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  2. K. V. Satish
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  3. C. S. Jha
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  4. P. G. Diwakar
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  5. Y. V. N. Krishna Murthy
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  6. V. K. Dadhwal
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Correspondence to C. Sudhakar Reddy.

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Reddy, C.S., Satish, K.V., Jha, C.S. et al. Development of deforestation and land cover database for Bhutan (1930–2014). Environ Monit Assess 188, 658 (2016). https://doi.org/10.1007/s10661-016-5676-6

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