区域土壤调查采样点布设方法研究进展
文献类型: 中文期刊
关键词: 土壤调查;;采样点布设;;样点数量;;布点密度;;样点空间布局
期刊名称:中国农业信息
ISSN: 1672-0423
年卷期: 2025 年
页码:
收录情况: 农林核心(2024版)
摘要: 【目的 】 采样点布设是区域土壤调查的重要环节和关键前提。合理布设采样点既能提高土壤调查结果的质量和效率,又可以减少土壤调查费用与工作量。 【方法 】 文章系统总结了近年来国内外土壤采样点布设方法研究进展,归纳了区域土壤调查采样点布设数量和空间布局方法,分析了现有采样点布设方法中存在的问题。 【结果 】 (1)土壤调查采样点布设数量或密度的确定方法主要有基于经验或先验知识法、经典统计学法、地统计学法及多种方法集成应用;(2)土壤调查采样点空间布局方法主要有随机法、网格法(系统等距法)、代表性图斑法和分层布样法;(3)尽管国内外在区域土壤调查采样点布设方法研究和实践方面取得了长足进步,但对不同土地利用类型的采样点最优布设密度和空间布局尚不明确,对采样点的布设效果(代表性、全面性、实用性)缺乏科学评价。 【结论 】 采样点布设研究未来应重点构建时空数字土壤,探索适用于不同土地利用类型的采样点布设方法,构建采样点布设方法评价指标体系和智能布设决策。
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