
The launch-meeting for a national key basic research development project (dubbed the 973 project) entitled "aridification over northern China and human adaptation" was held recently in Yangzhou City in east China's Jiangsu Province.
Based on CAS, this five-year project is to focus on the interaction mechanism between aridification and human activity, says Prof. FU Congbin, a climatologist and the project's chief scientist from the CAS Institute of Atmospheric Physics.
Aridification over northern China is one of the most serious environmental problems in China. Although preliminary results have been achieved by a previous "973 project" on the aridification prediction and its impacts on agriculture, water resources and ecological systems, the mechanisms on the formation of aridification still not well understood.
The project will address some fundamental problems, such as the evolution of regional environmental system and its adaptation to global change, relative contributions of natural forces and anthropogenic activity on environmental change, particularly, the transition or abrupt changes.
Its main research content will cover the following four aspects: Land surface and atmospheric processes in arid/semi arid regions and their interactions with human activity; evolution, transition, or abrupt change of aridification and its predictability; impacts of aridification and its transition on food, water and land security, and corresponding adaptation measures; and development of Asia regional model of the earth system and its application to aridification prediction, impact assessment and adaptation.
The research project has the following six subcomponents: Field experiments and studies on the land surface-atmosphere interaction over different land use/cover conditions; studies on the land surface ecological/hydrological processes and their interactions; transition of dry and wet period and abrupt change of aridification and their predictability; comparative study of the aridification between that over northern China and in central Asia, northern Africa, and northern America; impacts of aridification and its phase transition on food, water and land security, and corresponding adaptation measures; and development and application of a regional model of the earth system.