[1]张静,秦公伟.汉江水源地土地资源承载力时空格局研究[J].水土保持研究,2014,21(05):106-110,115.
　ZHANG Jing,QIN Gong-wei.Study on Spatiotemporal Variation of Land Carrying Capacity in the Upper Basin of Hanjiang River[J].Research of Soil and Water Conservation,2014,21(05):106-110,115.
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汉江水源地土地资源承载力时空格局研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 21 期数: 2014年05期 页码: 106-110,115 栏目: 出版日期: 2014-10-28
Title:
Study on Spatiotemporal Variation of Land Carrying Capacity in the Upper Basin of Hanjiang River
作者:
张静1, 秦公伟2
1. 陕西理工学院 历史文化与旅游学院, 陕西 汉中 723001;
2. 陕西理工学院 生物与工程学院, 陕西 汉中 723001
Author(s):
ZHANG Jing1, QIN Gong-wei2
1. School of History and Tourism, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China;
2. School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China
关键词:
土地承载力; 时空差异; 汉江水源地; 汉中市
Keywords:
land carrying capacity; spatiotemporal variation; source region of Hanjiang River; Hanzhong City
分类号:
F301.24
摘要:
从粮食、耕地、人口的角度出发，利用土地承载模型、土地承载指数和趋势分析法，借助GIS技术，研究了汉中市县域尺度土地承载力的时空变化特征，并预测了该市2020年耕地资源承载潜力。结果表明：（1）从时间上来看，20世纪90年代汉中市土地承载处于人粮基本平衡状态，2000年以后土地承载指数开始上升，人粮关系出现紧张，截至2010年表现为土地过载现象。（2）空间来看，宁强、略阳、西乡自20世纪90年代始人口就略显超载，山区县由农业生产粗放的经营转为多种因素综合作用下的区域粮食安全隐患。（3）对比2020年全国粮食作物单产为5 370~5 810 kg/hm2，加快农业内部结构调整，加强农业科技投入力度，可在区域范围内保证粮食安全。
Abstract:
Hanzhong was taken as the example. From the view of population, cultivated land and yield of grain, LCC and LCCI were used to study the temporal and spatial variation of land carrying capacity based on the dimension of the county and pre-estimated the production potential of land in 2020. The results showed that: (1) from time perspective, 1990’s LCC of Hanzhong was adequate yield of grain. LCCI of Hanzhong had increased since 2000 and the status quo of LCC was overloaded till 2011; (2) from space perspective, Ningqiang, Lueyang, Xixiang County have been a little of insufficient amount since 1990, extensive production in agriculture was converted into hidden danger of food security under comprehensive effect of many factors in mountainous area; (3) compared to 5 370～5 810 kg/hm2 of grain yield in 2020, speeding up the adjustment of agricultural structure, strengthening the agricultural investment in science and technology will ensure food security in this region.

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备注/Memo

收稿日期:2013-12-17;改回日期:2014-01-14。
基金项目:陕西省教育厅专项科研计划项目自然科学类（12JK0847）；校级项目（slgky13-13）；2013年国内访问学者项目
作者简介:张静(1981-),女,陕西汉中人,理学硕士,讲师,主要研究土地资源开发与规划利用。E-mail:zj2003y@126.com

更新日期/Last Update: 1900-01-01