| 河北省不同耕作区综合产能空间分异规律 |
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| 引用本文： | 崔永清,门明新,许 皞,陈亚恒,齐跃普,霍习良.河北省不同耕作区综合产能空间分异规律[J].农业工程学报,2008,24(5):84-89. |
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| 作者姓名： | 崔永清 门明新 许 皞 陈亚恒 齐跃普 霍习良 |
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| 作者单位： | 河北农业大学资源与环境科学学院,保定,071001 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)
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河北省农用地综合产能调查和评价资助项目 |
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| 摘 要： | 耕地综合产能精确地核算了耕地系统内部每个梯级绝对值水平,是农用地分等工作的深化与延续.基于农用地分等成果,通过抽样补充调查,依据自然等指数与理论抽样样点构建理论产能核算模型,利用等指数与现实抽样样点构建现实产能核算模型,统计数据核算实际产能,在河北省从东南-西北选取霸州、栾城、遵化、张北为典型耕作区域,分析不同耕作区产能差异及空间变异规律.结果表明:四个研究区域理论总产为2.52×109kg,现实总产为1.88×109kg,均高于实际总产1.44×109kg,不同层次产能差异明显;各层次单产水平次序同自然等指数次序是一致的,依次为栾城县>遵化县>霸州市>张北县;空间分异的大小取决于区域单产的浮动水平,空间变异程度依次为霸州>遵化>张北>栾城.通过核算结果对比证实了从农用地分等多个层次上测算综合产能的科学性、合理性和可行性,是深化耕地资源数量、质量并重管理的重要途径和方法.
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| 关 键 词： | 耕作区 耕地 综合产能 空间分异 河北省 |
| 收稿时间： | 2007/10/30 0:00:00 |
| 修稿时间： | 5/5/2008 12:00:00 AM |
Spatial variation and distribution of comprehensive productivity of cultivated land in different cultivation areas of Hebei Province |
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| Cui Yongqing,Men Mingxin,Xu Hao,Chen Yaheng,Qi Yuepu,Huo Xiliang.Spatial variation and distribution of comprehensive productivity of cultivated land in different cultivation areas of Hebei Province[J].Transactions of the Chinese Society of Agricultural Engineering,2008,24(5):84-89. |
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| Authors: | Cui Yongqing Men Mingxin Xu Hao Chen Yaheng Qi Yuepu Huo Xiliang |
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| Abstract: | The comprehensive productivity of cultivated land, which is the deepening and extension of agricultural land classification and gradation, accurately accounts the absolute value of each gradient in cultivated land system. On the basis of agricultural land classification and gradation results, through investigating supplementary sampling points, the indexes of natural quality and land use were used to construct theoretical and realistic linear regression models for yield per unit, respectively, and practical productivity was obtained from statistical data. Four regions in each cultivation area of Hebei, Bazhou, Luancheng, Zhangbei and Zunhua from southeast to northwest, were selected to analyze spatial variation and distribution of comprehensive productivity of cultivated land. The results show that the total theoretical productivity is 2.52×109 kg, realistic productivity is 1.88×109 kg, and practical productivity is 1.44×109 kg; The productivity of per unit area, which is consistent with natural quality, appears to be as follows: Luancheng > Zunhua > Bazhou > Zhangbei; The spatial differentiation decided by productivity floating amplitude comes out to be Bazhou > Zunhua > Zhangbei > Luancheng. The method for calculating comprehensive productivity based on agricultural land classification and gradation is scientific, reasonable and feasible, which is an important approach and method to deepen the management of balance between quantity and quality of cultivated land resources. |
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