China,
with its huge population and relatively meager natural resources, fragile
ecosystems, plus the unprecedented urbanization and economic growth in terms of
speed and scale, is facing severe challenges of sustainability and survival.
Addressing these challenges requires that the national land should be planned
and used wisely. This research is a pilot project aiming at establishing an
ecological security pattern at the national scale that will protect the most
sensitive ecological landscapes; and a critical pattern as a strategy for wise
conservation and wise development. Critical natural processes are analyzed
systematically at the national scale, including headwater conservation,
prevention of soil erosion , storm water management and flood control,
combating desertification and biodiversity conservation. This
study not only has an important impact on China's policy of ecological
civilization construction, but also has been widely cited as a classical study
in the world.