文档介绍：
基于 GIS 技术的区域中低产耕地与限制因
素评价#
翁青青,周碧青,张黎明,毛艳玲,邢世和**
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(福建农林大学资源与环境学院,福州
350002)
摘要:以南方典型水土流失区长汀县为研究区域,借助 GIS 和数学模型集成技术,利用近
年耕地地力和测土配方施肥调查样点分析资料,评价长汀县中低产耕地及其限制因素,结果
表明:长汀县中、低产耕地面积分别占全县耕地总面积的 %和 %,中低产耕地主
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要分布于河田、童坊、南山和濯田等乡镇。中低产耕地主要限制因素依次为缺水、酸化、缺
钾、渍涝和瘠瘦限制,分别占全县中低产耕地总面积的 %、%、%、%
和 %。根据评价结果,提出了长汀县中低产耕地的改良利用对策。
关键词:土壤学;GIS;中低产耕地;限制因素;空间分布
中图分类号:
15
Evaluation on the regional cropland with middle and low
yield and limiting factors by GIS technology
Weng Qingqing, Zhou Biqing, Zhang Lingming, Mao Yanling, Xing Shihe
(Resource and Environment School, Fujian Agriculture and Forestry University, Fuzhou 350002)
20
25
30
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Abstract: With the help of integration technologies of GIS and mathematical model, this paper
cites Changting county, a typical soil erosion area in south China, as the research district to
evaluate the medium-low yield cropland and its limiting factors. It has been found that the
medium and low yield cropland account for % and % of the total area of cropland in
this county respectively. The medium-low yield cropland is mainly distributed in the Hetian,
Tongfang, Nanshan, Zhuotian town and etc.. The major limiting factors of medium-low yield
involve water shortage, acidification, potassium deficiency, waterlogging, and barren restriction,
which occupy %, %, %, % a