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基于热量的食物供给服务时空分异研究——以广西土地农产品为例

本站小编 Free考研考试/2022-01-01

谢余初1, 2,,
张素欣2,,,
刘巧珍2, 3,
潘新潮2
1.中国科学院环江喀斯特生态系统观测研究站 环江 547100
2.南宁师范大学北部湾环境演变与资源利用教育部重点实验室/广西地表过程与智能模拟重点实验室 南宁 530001
3.浙江师范大学地理与环境科学学院 金华 321004
基金项目: 国家自然科学基金项目41761039
广西自然科学基金项目2016GXNSFBA380047
广西壮族自治区八桂****工程专项经费和广西高校中青年教师基础能力提升项目2017KY0406

详细信息
作者简介:谢余初, 主要研究方向为国土资源管理、GIS与农业地理。E-mail:xieych09@lzu.edu.cn
通讯作者:张素欣, 主要研究方向为土地变化科学。E-mail:sxzhang0936@163.com
中图分类号:F326.11;X24

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收稿日期:2020-04-16
录用日期:2020-08-30
刊出日期:2020-12-01

Spatial-temporal patterns of the food provisioning service based on calories in Guangxi, China

XIE Yuchu1, 2,,
ZHANG Suxin2,,,
LIU Qiaozhen2, 3,
PAN Xinchao2
1. Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences, Huanjiang 547100, China
2. Key Laboratory of Environment Change and Resources Use in Beibu Gulf(Ministry of Education), Nanning Normal University/Key Laboratory of Earth Surface Process and Intelligent Simulation, Guangxi, Nanning 530001, China
3. College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
Funds: the National Natural Science Foundation of China41761039
the Natural Science Foundation of Guangxi2016GXNSFBA380047
the Bagui Scholars Program of Guangxi Zhuang Autonomous Region, and the Basic Ability Improvement Project for Young and Middle-aged Teachers of Guangxi Colleges and Universities2017KY0406

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Corresponding author:ZHANG Suxin, E-mail:sxzhang0936@163.com


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摘要
摘要:在当前食物安全问题日益突出、粮食生产不稳定的情况下,从食物营养的角度分析和评价区域食物供给服务功能具有重要的意义。以广西壮族自治区为研究区,结合食物营养成分转化率和国家营养物摄入量的要求,将各类土地农产品折算成食物热量统一核算,分析和估算广西土地农产品食物热量供给服务功能的时空变化特征及其供需平衡。结果表明:1)2015年广西农产品食物供给热量为4.46×1014 kJ,主要来源于谷物杂粮类和蔗糖(占85.47%以上),单位人均食物热量为9.31×106 kJ·人-1。2)2000—2015年间,广西蔗糖和果蔬类供给热量增长最多,粮食和油类则呈现波动变化趋势。广西食物热量总量上持续增长且较为富余,按照小康生活水平的标准,食物热量理论上可供养人口高于广西实际人口数;但食物热量分布不均衡,谷类食物供给热量占比逐年下降,个别县市食物热量人口承载能力低。3)在空间上,广西食物供给丰富的区域主要集中在水土光热条件较好、地势平坦的广西中部和南部地区的平原、盆地和缓丘台地等农业主产区,未来应加强这些地区的耕地保护。广西应重视和加强谷物杂粮类粮食的生产和保护,因地制宜、合理分区,优化农业主产区种植结构,提高生产管理水平与规模化生产能力,加强区域间粮食流通与贸易,以实现食物供给安全和可持续发展。
关键词:食物供给/
食物热量/
农产品/
供需平衡/
时空格局/
广西
Abstract:As society and food consumption changes, more people are paying attention to the food supply chain as part of a healthier lifestyle. Understanding the spatial-temporal characteristics of food provisioning services is important for policy decisions regarding production capacity, especially in places with unstable food availability and unbalanced nutrition. The food provisioning service of the Guangxi Zhuang Autonomous Region (GZAR) was assessed based on calories from 2000 to 2015. The nutrition consumption standards were also used to calculate food provision calories. The results showed that in 2015, the caloric output totaled 4.46×1014 kJ; calories from grains and cereals were the most abundant, followed by sucrose, and then oils (grains and sucrose were 85.47% of the total caloric intake). From 2000 to 2015, calories from sucrose, fruits, and vegetables increased significantly, while the calories from grains and oils fluctuated. The overall food provision increased steadily, resulting in a surplus; the calories per person increased from 7.87×106 kJ (2000) to 9.31×106 kJ (2015). In 2015, the total and surplus calories supported population sizes of 103.28 million and 53.03 million, respectively (with a 'well-off' quality standard), which exceeded the total GZAR population (55.18 million). However, the proportion of calories from grains decreased yearly and was only 52.2% by 2015. In 23.3% of the counties and cities, less than 50% of the calories from grains were provided, indicating that calories were unevenly distributed, and some counties had a low grain-calorie capacity. The high caloric output areas were in the plains, basins, and valleys of the central-southern GZAR, where sufficient light, heat, flat fertile land, and water resources were available (e.g., Xingbin District, Wuming and Hengxian counties, and the cities of Guigang and Qinzhou). The low caloric output areas were in the northwest mountain region and urban areas. Therefore, protecting croplands in the high-yield regions and developing unused lands for sustainable food provision are important for the GZAR. Optimizing agricultural production for the local conditions, improving the production management and large-scale production capacity levels, and strengthening the regional grain trade may contribute to the sustainable development and security of the GZAR food supply.
Key words:Food provision/
Calorie of food/
Agricultural products/
Supply and demand balance/
Spatial-temporal pattern/
Guangxi

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图12000—2015年广西主要农作物类型食物的供给热量
Figure1.Calories supplies of different crop types in Guangxi from 2000 to 2015


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图22000—2015年广西平均食物热量供给空间分布图
Figure2.Spatial distribution of average calories supplies of foods in Guangxi from 2000 to 2015


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图32000—2015年广西不同类型食物供给热量平均值的空间分布
Figure3.Spatial distribution patterns of average calories supplies of different crop types in Guangxi from 2000 to 2015


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图42000—2015年广西人均食物供给热量的空间分布
Figure4.Spatial distribution patterns of per capita food calorie in Guangxi from 2000 to 2015


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图52000—2015年广西食物热量总量可供养人口数和盈余人口数
Figure5.Population sizes that the total food and surplus foods can support respectively in Guangxi


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图62015年小康生活水平下广西食物热量供给盈余人口数空间格局
Figure6.Spatial patterns of population that surplus foods can support in Guangxi in 2015 at well-off life level


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图72000—2015年广西食物热量供给影响因素
Figure7.Influential factors impacting calorie supplies in Guangxi from 2000 to 2015


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表1不同食物可食部分比重与热量含量
Table1.Proportion of edible part and calorie of different foods
食物
Food
稻米
Rice
玉米
Maize
高粱
Sorghum
大豆
Soybean
绿豆
Mung bean
红小豆
Adsuki bean
红薯
Sweet potato
马铃薯
Potato
木薯
Cassava
花生
Peanut
油菜籽
Oilseed rape
芝麻
Sesame
甘蔗
Sugarcane
蔬菜
Vegetables
西瓜
Watermelon
甜瓜
Melon
香蕉
Banana
柑橘
Citrus
龙眼
Longan
荔枝
Litchi
芒果
Mango
桃子
Peach
葡萄
Grape
柿子
Persimmon
可食部分比例
Edible portion proportion (%)
100 100 100 100 100 100 90 94 97 53 100 100 72 100 59 78 60 77 50 73 68 89 86 90
热量Calorie [kJ·(100g)-1] 1 450.5 1 463.0 1 724.6 1 630.2 1 375.2 1 354.4 359.9 321.9 497.4 1 308.3 2 090.0 2 340.0 268.0 96.1 108.7 112.9 388.7 213.2 296.0 297.2 272.1 183.8 188.4 297.0


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