Modelling potentially suitable lac cultivation zones of Butea monosperma to promote livelihood security in rural India

Abstract

The present paper highlights the importance of lac cultivation through Butea monosperma . We have modelled the suitable habitat of major lac host B. monosperma using MAXENT for the current and future climatic scenarios (RCPs 2.6, 4.5, 6.0 and 8.5). The study suggested the dominance of suitable habitats of B. monosperma in central-eastern to eastern and southern parts of the country. Temperature seasonality (Bio_4) was the most significant bioclimatic variable in regulating the distribution of B. monosperma followed by elevation and annual precipitation (Bio_13). The projection for the year 2050 suggested the habitat shift towards the eastern and southern parts. The study indicated the major habitat of B. monosperma continued to exist in the Chotanagpur plateau in eastern India. The model predicted approximately a 9–13% decrease in the overall potential habitat of B. monosperma by 2050, and the distribution of species would be nearly extinct from the northern and western parts. Presently, only the 5% lac host trees are being utilised for lac cultivation, and the study suggested that conservation and promotion of B. monosperma on projected suitable habitats and even by utilising 25% of resources, the lac production may jump manifold catering to global demand, rural economy and employment and shall contribute towards ‘Self Reliant India’.

Ecological niche modelling to project past, current and future distributional shift of black ebony tree Diospyros melanoxylon Roxb. in India

“…For RCP 8.5 (the highest GHG emission scenario) in the year 2050 and 2070, the extremely suitable habitats would decrease by 4.41 and 4.58%, respectively. Our result is consistent with Tiwari et al (2021) where they reported approximately 9–13% decrease in the potential habitats of B. monosperma by 2050, which is an associate member of Sal forest community like D. melanoxylon . Furthermore, Yadav et al (2021) studied the impact of climate change on geographical distribution of major NTFP species ( Buchanania lanzan , Emblica officinalis , Terminalia bellirica , Terminalia chebula and Sterculia urens ) in the Central India Region and reported a reduction in highly suitable areas for all five species under future climate scenarios.…”