Explanation:

Jharkhand:
The industrial areas of Jharkhand have witnessed a dilution of the tribal share of the population. This shift can be attributed to several factors that have influenced the demographic composition of the state.

Industrialization:
The rapid industrialization in Jharkhand, particularly in cities like Jamshedpur, has attracted a large number of non-tribal migrant workers. These workers often come from different parts of the country in search of employment opportunities in the state's industrial sectors.

Economic Opportunities:
The availability of economic opportunities in the industrial areas of Jharkhand has further contributed to the influx of non-tribal populations. Many individuals from outside the state have migrated to Jharkhand in pursuit of better livelihoods and job prospects.

Urbanization:
The process of urbanization in Jharkhand has also played a significant role in altering the tribal share of the population. As industrial and urban areas expand, they tend to attract a diverse range of residents, leading to a decrease in the tribal population's relative proportion.

Government Policies:
Government policies and development initiatives focused on industrial growth and urban development have further accelerated the dilution of the tribal share of the population in Jharkhand. These policies have often prioritized economic growth over the preservation of tribal communities and cultures.
In conclusion, the industrial areas of Jharkhand have experienced a dilution of the tribal share of the population due to factors such as industrialization, economic opportunities, urbanization, and government policies. This demographic shift highlights the complex interplay between economic development and social change in the state.