To solve this problem, we need to identify the period during which the Joint Forest Management (JFM) concept was introduced in India.$\newline$Let's analyze the options:$\newline \bullet$Option 1: 1960s$\newline$ - During the 1960s, India was focusing on industrialization and agricultural development. Environmental conservation was not a primary focus during this decade.$\newline \bullet$Option 2: 1970s$\newline$ - The 1970s marked a significant shift towards environmental awareness globally, including in India. The government began to recognize the importance of involving local communities in forest management.$\newline$ - The concept of Joint Forest Management (JFM) was introduced in this period as a strategy to involve local communities in the sustainable management and conservation of forests.$\newline \bullet$Option 3: 1980s$\newline$ - While the 1980s saw further development and formalization of JFM policies, the initial introduction occurred in the 1970s.$\newline \bullet$Option 4: 1990s$\newline$ - By the 1990s, JFM had become more widespread and institutionalized, but it was not the period of its introduction.$\newline$Based on this analysis, the Joint Forest Management concept was introduced in India during the 1970s.$\newline$Therefore, the correct option is Option 2.