%0 Journal Article
%T STUDY ON ENERGY FLOWS THROUGH AN AGROECOSYSTEM IN WESTERN LIAONING PROVINCE<br>喀左县农业生态系统能流的研究
%A Wen Dazhong
%A <br>闻大中
%J 生态学报
%D 1989
%I 
%X The impacts of increased human activities in the last two hundred years have seriously damaged the semi-arid and semi-humid ecosystems of western Liaoning in China. Frequent droughts and heavy soil erosion are the major obstructions of agricultural development in the area. The energy flows through an agroecosystem in rural area of Kazhou county, a typical one in western Liaoning province, have been studied to learn some basic characteristics of the agroecosystem and to find some strategies for improving it. The system covers seven subsystems: cropping fields, orchards, tree plantations, artificial grass lands, natural shrubbery-grass pastures, domestic animals, and local residents. The annual average energy flows through the agroecosystem, including input and output energy flows and the energy flows between the components, were calculated and estimated for the period of 1981-1983. Based on analysis, some strategies for improving the agroecosystem were recommended,such as reducing pork production and developing dry-land farming techniques to improve food supply to local residents, developing fuelwood plantation to improve local household fuel supply, and developing intensive orchards to increase commercial outputs.
%K Liaoning province
%K agroecosystem
%K energy flows<br>农业生态系统
%K 能流
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=193CD41145C209AD7163DFD1E5C94DA2&yid=1833A6AA51F779C1&vid=9CF7A0430CBB2DFD&iid=38B194292C032A66&sid=0F7768518993EDDE&eid=96A53C367B5173D7&journal_id=1000-0933&journal_name=生态学报&referenced_num=4&reference_num=3