This article introduced the current situation of biogas comprehensive utilization in China,analyzed the economic and ecological benefits,and estimated the potentiality of biogas comprehensive utilization.

Present situation and comprehensive treatment of fire accident in Ningxia coal-field;

Analysis and comprehensive treatment of aquatic environment in Poyang Lake;

Research on a combined separator for comprehensive treatment of smoke dust and harmful gases from vertical kilns;

Investigation and Study on comprehensive management of the Pollution in Shuimohe;

Trial and demonstration on comprehensive management and utilization of sandy land at the northern of Jingtai county;

Discussion on important techniques of sustainable development of small watershed comprehensive management;

Study on population dynamics and integrated control of Polylopha cassiicola in Cinnamomum cassia;

The situation of rodent occurrence in the north area of Longdong and the integrated control strategy;

Grassland deterioration in the source region of the Yangtze-Yellow rivers and integrated control of the ecological environment;

Implementation of comprehensive control and management to improve water environment of Taihu Basin;

Investigation on comprehensive control of floats in Three-Gorges Reservoir;

Study on the comprehensive control of Shixia small watershed in the north mountainous area of Beijing;