[Research Progress in the Relationship between Senile Depression and Cardiovascular Diseases].

Depression is a common problem in the patients with cardiovascular diseases,which is closely associated with increased mortality and disability and decreased quality of life.This paper reviews the recent studies about depression and cardiovascular diseases,summarizes the relationship between them,and puts forward the management measures for depression in the patients with cardiovascular diseases,so as to provide a theoretical basis for the prevention and treatment of cardiovascular diseases from depression.

[Analysis of difference between ecosystem respirations of Leymus chinensis steppe and Stipa baicalensis steppe].

Static opaque chamber-chromatographic technique was applied to measure the ecosystem respirations of Leymus chinensis steppe and Stipa baicalensis steppe. The affecting factors of ecosystem respiration were analyzed. The difference between ecosystem respirations of the two grasslands was compared and the reasons resulting in the difference were analyzed.