[Objective] The aim was to discuss he produce and elimination rules of particles in Beijing during early 2008 Olympic Games. [Method] Based on the analysis of p
[Objective] The aim was to study the changes of maximum continuous precipitation in Shenyang in recent 48 years.[Method] By dint of the daily precipitation from
[Objective] The aim was to analyze the characteristics of environmental Kuznets curve (EKC) and assess air quality in Qingdao City. [Method] The EKC characteris
As the most famous perennial leguminous forage in the world,Medicago sativa L.ranks the first in both yield and nutritional value,and can be used for many years