Ecological security

Ecological security rests on maintaining four kinds of equilibrium between human beings and the physical environment. Large scale shifts in human demographic patterns are threatening these equilibriums and thereby increasing insecurity for individuals, groups, countries and the planet. Substantial changes in security thinking are required in order to address these imbalances.
Ecological security is an important basis of the entire human security system, the cornerstone for human survival. Knowing the status of ecological security is crucial for making decisions to avoid ecological disaster. Existing research, both the basic research on ecological security mechanism and information service systems, is still primitive in their abilities to resolve eco-security problems.
The four most significant demographic issues in the context of the ecological security framework: population growth, movements, graying, and differential growth. 
In recent years, the idea that issues such as climate change might pose a threat to security has become prominent, and environmental issues more broadly have featured significantly in debates about redefining security since the 1980s (Mathews 1989; Myers 1989). Traditionally, approaches to the relationship between security and environmental change have asked whether and how environmental issues constitute a security threat. This is a bad place to start, for two reasons. First, it suggests that we as analysts can establish criteria for defining security, ignoring the social construction of security: the fact that different political communities understand security in different ways, and that the same political communities change the way they understand security over time. A fixed and abstract definition of security is therefore inconsistent with the need to come to terms with how security is approached in practice (see McDonald 2012).
Incidentally, see the Indian The Foundation for Ecological Security (FES).