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本文应用系统分析方法,对太行山浅山区一个典型的农业生态系统—唐县明伏村进行了定量研究。研究表明,农田系统能量转化效率低,肥料布局不合理,氮素过量盈余,生态系统严重超载。由于人口增长与建房占地,第二性生产一直受制于耕地生产力,农业经济在资源环境限制下发展缓慢。本文指出,重视旱地作物生产,促进草食食物链过程,推动剩余劳动力的转移是提高系统承载能力,减轻环境压力的有效途径。
In this paper, a systematic analysis method is used to quantitatively study Mingfu village, a typical agricultural ecosystem in the shallow mountainous area of Taihang Mountain. The research shows that the energy conversion efficiency of farmland system is low, the layout of fertilizers is unreasonable, excess nitrogen surplus and severe ecosystem overloading. Due to population growth and land occupation, secondary production has been subject to cultivated land productivity, and the agricultural economy has been developing slowly under the constraints of resources and environment. This paper points out that paying attention to the crop production in drylands, promoting the process of feeding food chain and promoting the transfer of surplus labor are effective ways to increase system carrying capacity and reduce environmental pressure.