Construction and pattern optimization of ecological network in Zhengzhou metropolitan area.

The rapid urbanization process has led to the increasingly prominent problems of ecological environment protection and optimization. The construction of ecological network system, planning to guide ecological values, and efficiently utilizing landscape effects are of great significance for regional regulation of ecological space and promotion of local sustainable development. Taking Zhengzhou metropolitan area as an example, based on land use data at eight time points from 1980 to 2020, using ArcGIS, Guidos Toolbox, Conefor and other tools, we outlined the ecological network with a high structural integrity in the study area.

[Effects of acute moderate hypoxia on plasma angiotensin II and adrenomedullin in pilots].

Objective. To study the effect of acute moderate hypoxia on plasma angiotensin II (AII) and adrenomedullin (ADM) content in pilots. Method.