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京津冀地區(qū)耕地質(zhì)量等別空間差異分析
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國土資源部公益性行業(yè)科研專項(201511010-06)


Space Difference Analysis of Cultivated Land Quality Grade in Beijing-Tianjin-Hebei Region
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    摘要:

    利用2013年耕地質(zhì)量等別縣級年度更新數(shù)據(jù),,采用面積加權平均法,計算各因素指標區(qū)的耕地平均等別,;采用均值二分法,,計算各指標區(qū)內(nèi)各耕地地塊等別與平均等別之間的離差,;采用等別方差,計算各縣(區(qū))利用等的離散程度,。研究結果表明:各因素指標區(qū)平均等別均低于8等,,大部分地區(qū)耕地質(zhì)量等別低于全國平均水平的9.8等,,北京平均水平略高于天津與河北;自然等的離差值域為-3.08~4.90,,利用等的離差值域為-5.97~5.16,,經(jīng)濟等的離差值域為-5.99~4.24,該地區(qū)80%以上的耕地等離差范圍在±2等,;各區(qū)縣的耕地利用等方差值域為0~6.13,,平原地區(qū)各區(qū)縣的利用等方差較大,山地丘陵區(qū)和高原地區(qū)的各縣利用等方差較小,。通過空間差異分析表明,,平原地區(qū)自然條件稍好,但其利用水平和經(jīng)濟效益差異較大,;西部山區(qū),、北部山區(qū)和壩上高原區(qū)的耕地質(zhì)量提升潛力較大,但自然條件和基礎設施較差,。

    Abstract:

    Analyzing the characters of spatial distribution in cultivated land quality of Beijing-Tianjin-Hebei region is important to protect and coordinate the development of regions. The mean grade in each index area was calculated with annual database of 2013 about the cultivated land quality by using the weighted average method. Moreover, the deviation between grades was calculated by mean dichotomy method and grade dispersions in each counties by variance. The results showed that the mean grades were under 8 and the cultivated land qualities were lower than the national average of 9.8. Particularly, the average grade of Beijing was slightly higher than those of Tianjin and Hebei. Physical quality grade deviation was ranged from -3.08 to 4.90, and utilization quality grade was ranged from -5.97 to 5.16, economic quality composition grade was ranged from -5.99 to 4.24.The deviation of cultivated land quality grade for more than 80% of the region was within ±2. The utilization quality grade variance was ranged from 0 to 6.13. The plain areas had large variances and the plateau areas had small changes. The results of space difference analysis showed that the physical quality of cultivated land was slightly better than that of plain areas, but its utilization level and economic efficiency were obviously different. The western mountains area, northern mountains area and Bashang Plateau area had high potential to increase the cultivated lands qualities, although the natural condition and infrastructure should be enhanced. The mean dichotomy was proposed to set cultivated land quality goals after land consolidation. And the variance was put forward to divide land consolidation region, which can be a reference for choosing priority zoning. The research could be referred for well-facilitated farmland construction, improvement of medium or low-yield cultivated land and selection of priority zone.

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李鵬山,杜振博,張超,鄖文聚,楊建宇,朱德海.京津冀地區(qū)耕地質(zhì)量等別空間差異分析[J].農(nóng)業(yè)機械學報,2017,48(2):150-157. LI Pengshan, DU Zhenbo, ZHANG Chao, YUN Wenju, YANG Jianyu,ZHU Dehai. Space Difference Analysis of Cultivated Land Quality Grade in Beijing-Tianjin-Hebei Region[J]. Transactions of the Chinese Society for Agricultural Machinery,2017,48(2):150-157.

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  • 收稿日期:2016-07-04
  • 最后修改日期:2017-02-10
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  • 在線發(fā)布日期: 2017-02-10
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