| 渭北旱原东部耕地资源及其人口承载力的研究 |
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| 引用本文： | 杨改河,杨学农.渭北旱原东部耕地资源及其人口承载力的研究[J].西北农林科技大学学报(社会科学版),1992,20(1):41-46. |
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| 作者姓名： | 杨改河 杨学农 |
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| 作者单位： | 西北农业大学农学系 陕西杨陵·712100
(杨改河)，西北农业大学农学系 陕西杨陵·712100(杨学农) |
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| 摘 要： | 在综合调查渭北旱原东部典型县的农业资源基础上,运用正交多项式、逐步回归、灰色预测等方法对旱原耕地资源、生产力、人口发展、粮食供求关系等项目进行了分析,得出在一定生产水平下的人口承载量,并指出提高该区耕地人口承载量的关键是增加物质技术投入,努力改造中低产田。
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| 关 键 词： | 渭北旱原 耕地资源 人口承载力 |
Research on the Cultivated Land Resources and Population Supporting Capacity in the East Part of the Weibei Rainfed Loess Plateau |
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| Yang Gaihe Yang Xuenoag.Research on the Cultivated Land Resources and Population Supporting Capacity in the East Part of the Weibei Rainfed Loess Plateau[J].Journal of Northwest Sci-Tech Univ of Agr and,1992,20(1):41-46. |
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| Authors: | Yang Gaihe Yang Xuenoag |
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| Abstract: | Based on comprehensive investigation into resources in the typical east part of the East Part of Weibei Raiinfed Loess Plateau, this paper analysee the cultivated land resources, productivity, population development and relationship of grain balance using orthogonal multionmial, multiple regression and grey forecast, thus, obtaining the population supporting capacity under certain productive levels. Also, the paper points out that the key link to raising the population supporting capacity of cultivated land in this region is to increase the material and technical inputs and to transform the middle-and low-yield farmlands. |
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| Keywords: | Weibei Rainfed Loess Plateau cultivated land resources population supporting capacity |
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