承德食物供给能力分析  

An Analysis of the Capacity of Chengde's Food Provision

作　　者：成福伟[1] 张月丛[1] 孟宪峰[1] 杨依天[2] 

机构地区：[1]河北民族师范学院,河北承德067000 [2]中科院地理科学与资源研究所,北京100101

出　　处：《河北民族师范学院学报》2012年第2期31-36,共6页Journal of Hebei Normal University For Nationalities

基　　金：河北省社会科学发展研究课题(201101353)

摘　　要：根据承德各类型生态系统(农田、草地、水域、森林)实际食物生产量,按食物营养成分转化率,将各类食物折算成人类生存所需的3大营养成分(热量、蛋白质、脂肪)产量,得出承德实际食物供给能力。结果表明:3大营养成分均供给有余,但供给能力有所不同。玉米、猪肉为主要食物供应来源,食物供应结构与消费结构不一致。农田生态系统的贡献长期占据绝大部分;草地生态系统所占的比例远远高于中国草地生态系统食物供给比例;水域生态系统所占比例很小,平均为0.53%;森林生态系统食物所占比例增长速度在加快。承德农田生态系统3大食物营养成分人均供应能力均低于中国人均供应能力;草地生态系统远高于全国人均供应能力;水域生态系统均远低于全国人均供应能力。应调整优化产业结构,改善居民食品营养结构,提高承德人民生活水平。According to the actual food production of various types of ecosystems （cropland, grassland, aquatorium, forests） in Chengde and the food nutrition conversion table, if we convert various types of food into three major nutrients （heat, protein, fat） needed by the survival of humans, we come to the actual food supply capacity in Chengde. The results show that： The supply of the three major nutrients is enough, but the supply capacity is different. With corn and pork as the main source of food supply, the food supply structure is inconsistent to the consumption structure. The contribution of cropland accounts for the vast majority; The proportion of food supply from grassland is much higher than that of China; The proportion of food supply from aquatorium is low, with an average of 0.53%; The proportion of food supply from forests is fast growing. The per capita food supply capacity of three major nutrients from cropland in Chengde is lower than that in China, with that from grassland far higher and that from aquatorium far lower. We should adjust and optimize the industrial structure, improve the nutrition structure and the living standards in Chengde.

关 键 词：承德 食物供给 食物营养 食物供需平衡 

分 类 号：S216[农业科学—农业机械化工程]