Abstract:

In order to better evaluate the status of utilization of solar energy and sustainable agricultural development of the wetland ecosystem in Daqing. By employing the energy value analysis theory of ecological system, the author quantificationally analyzed and estimated the ecological benefit of Daqing marsh ecological system and the material flow and energy flow inside the system. The results showed that the value of Daqing City proper marsh was extremely great. From the table of energy value analysis, the author could come to the conclusion that the total natural resources value of Daqing marsh ecological system was 3.13×1010 ￥. Rainwater had an absolute advantage among all the renewable resource components, and the proportion was about 74%. The macroeconomy value of the marsh water body and the sediment deposition was 1.61×1010 ￥. By comparing with other items in the energy value analysis table, the energy value of the marsh primary productivity and the animal resources was less than the energy value of invested renewable resources. It showed that most of the system energy was used for the ecological service function of the marsh ecological system, not for the material output.