The sex ratio, defined as the number of females per 1000 males, is a crucial demographic indicator reflecting the socio-economic and cultural health of a society. In India, the sex ratio exhibits several distinct features, and the child sex ratio (0-6 years) has a profound impact on the overall sex ratio.

Key Features of Sex Ratio of Population in India:

1. Historical Imbalance: Historically, India has had an unfavorable sex ratio, meaning fewer females per 1000 males, compared to the global average. This imbalance has persisted for decades, though there have been some recent improvements.
2. Declining Trend in Child Sex Ratio (CSR): A particularly alarming feature has been the declining Child Sex Ratio (CSR), which is the number of girls per 1000 boys in the 0-6 age group. This decline was stark in the decades leading up to 2011, indicating a deeper societal issue.
3. Regional Disparities: There are significant regional variations in sex ratio across India. States like Kerala consistently show a favorable sex ratio (more females than males), while states like Haryana, Punjab, Delhi, and parts of Rajasthan and Uttar Pradesh exhibit highly unfavorable sex ratios, especially in the child age group.
4. Rural-Urban Divide: Generally, rural areas tend to have a slightly better sex ratio than urban areas, though this trend can vary regionally. The decline in CSR has been observed in both rural and urban settings.
5. Socio-Economic Factors: Sex ratio is influenced by a complex interplay of socio-economic factors, including poverty, education levels, access to healthcare, and cultural norms. Higher literacy rates and economic empowerment of women often correlate with better sex ratios.
6. Impact of Son Preference: A deep-rooted cultural preference for sons, driven by factors like inheritance, old-age security, and patriarchal traditions, is a primary driver of the skewed sex ratio, particularly the CSR.
7. Technological Misuse: The misuse of pre-natal diagnostic techniques (PNDT) for sex-selective abortions has been a major contributor to the declining CSR, despite legal prohibitions.

Impacts of Child Sex Ratio (CSR) on General Sex Ratio: The child sex ratio is a leading indicator and has a direct and significant impact on the general sex ratio of the country in the long run.

1. Future Demographic Imbalance: A low CSR today translates into a deficit of young women in the future. As these cohorts age, the imbalance propagates through the population pyramid, leading to a skewed adult sex ratio in subsequent generations. This means fewer women available for marriage and family formation.
2. Social Consequences:
   • Marriage Squeeze: A shortage of women can lead to a "marriage squeeze," where a significant number of men may find it difficult to find partners. This can result in increased social frustration, bachelorhood, and potentially higher rates of crime against women (e.g., abduction, trafficking, forced marriages) as men resort to illegal means to find brides.
   • Increased Violence and Exploitation: The scarcity of women can increase their vulnerability to exploitation, violence, and commodification.
   • Breakdown of Social Fabric: Long-term demographic imbalances can disrupt traditional family structures and social norms, leading to broader societal instability.
3. Economic Consequences:
   • Labor Market Distortions: While a direct link is complex, a severe gender imbalance could potentially affect labor market dynamics in the long run, especially in sectors traditionally dominated by women.
   • Reduced Human Capital: The underlying causes of low CSR (discrimination against girls) mean that a significant portion of the female population is not allowed to reach its full potential, leading to a loss of human capital for the nation.
4. Health Implications: Sex-selective abortions carry health risks for women and reflect a societal disregard for female health and well-being.
5. Policy Challenges: A skewed sex ratio presents significant challenges for policymakers in areas like public health, social welfare, and law enforcement, requiring targeted interventions to address gender discrimination and promote gender equality.

In conclusion, while the overall sex ratio in India has shown some signs of improvement in recent years (e.g., NFHS-5 data indicating a national sex ratio of 1020 females per 1000 males, though this includes all ages and is influenced by factors like female longevity), the persistently low and regionally varied child sex ratio remains a critical concern. It is a stark indicator of deeply entrenched gender discrimination and, if not effectively addressed, will continue to cast a long shadow over India's demographic future and social well-being. Initiatives like "Beti Bachao, Beti Padhao" aim to tackle this issue by promoting the value of the girl child and combating sex-selective practices.