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作 者 ：曹明奎

期 刊 ：生态学报 1993年 13卷 1期 页码：83~91

关键词：中国农业生态系统；生产潜力；人口承载力；

Keywords:potential productivity, population carrying capacity, China\‘sagro- ecosystem.,

摘 要 ：中国农业生态系统的生产潜力和人口承载力是全球关注的问题。本研究将农业生态系统的生产潜力定义为由生物遗传特性和4大宏观生态条件(太阳辐射、温度、水资源和土地资源)共同决定的生产力上限;以无机环境-第一性生产-第二性生产之间的结构适应性和能量-物质流平衡为主线,发展了对农业生态系统生产潜力和人口承载力的综合评价模型,它包括第一性生产潜力子模型和第二性生产潜力与人口承载力优化子模型;并应用该模型把中国农业生态系统分为603个区域单元,进行第一性生产潜力,第二性生产潜力和人口承载力的评价。

Abstract:Based on biological adaptability and material-energy flow balancing in ecosystem, an integrated approach was developed to assess‘the potential productivity and population carryiny capacity of agro-ecosystem in China.With a model, the China‘s agro-ecosystem was divided into three structural ui its (farmland, grassland and animal busban-dary) and 601 regional units, and the potential primary productivity, secondary productivity and population carrying capacity were evaluated. The major results are presented a...

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