云南乌蒙山片区耕地自然质量等空间分布特征

发布时间：2018-04-20 13:37

本文选题：分布特征 + 空间分析　；参考：《水土保持研究》2017年03期

【摘要】：依据云南省农用地分等成果,服务农业产业化及精准扶贫工作,通过采用空间叠加分析与统计的方法,基于县域尺度的耕地自然质量等和平均自然质量等分析了该片区的空间分布特征。结果表明:(1)耕地自然质量总体等别偏低,以5~9等为主,平均等8.14等;(2)耕地自然质量等级偏低,以中、低等地为主,所占比例高达92.11%,涉及236个乡镇,占该片区乡镇总数的90.42%,包括21个民族乡镇,占8.04%;(3)耕地自然质量等在指标区、县域尺度下的空间分布存在差异。滇东北山原区的平均自然质量等高于滇中高原盆地区;仅1个县分布优等地,3个县全为中等地,3个县除优等地外均有分布,8个县分布低等地和中等地,依据上述特征划分4个区并选取典型县,表明等别较好的耕地主要集中于光热资源充裕及土壤质地良好的地区。该研究为云南乌蒙山片区高标准基本农田建设和精准扶贫工作等提供参考。
[Abstract]:Based on the results of agricultural land classification in Yunnan Province, serving the agricultural industrialization and precision poverty alleviation work, and adopting the method of space superposition analysis and statistics, The spatial distribution characteristics of this area are analyzed based on the natural quality of cultivated land and the average natural quality of cultivated land on the county scale. The results show that the natural quality of cultivated land is low in general, with 5, 9, and 8. 14, respectively. The natural quality grade of cultivated land is on the low side, and the proportion is as high as 92.11, involving 236 villages and towns. 90.42% of the total number of villages and towns in this area, including 21 national villages and towns, account for 8.04%) the natural quality of cultivated land is different in the index area, and the spatial distribution of cultivated land at county scale is different. The average natural mass in the original area of the North and East Yunnan Mountains is higher than that in the Central Yunnan Plateau Basin region, only one county is well distributed, three counties are medium, three counties are distributed except the superior land, and eight counties are distributed in the lower and middle areas, and the average natural mass in the northern mountain area is higher than that in the central Yunnan plateau basin area. According to the above characteristics, four districts were divided and typical counties were selected, which indicated that the better cultivated land was mainly concentrated in areas with abundant light and heat resources and good soil texture. The study provides a reference for the construction of high-standard basic farmland and precision poverty alleviation in Wumengshan District, Yunnan Province.
【作者单位】：云南农业大学水利学院;云南农业大学国土资源科学技术工程研究中心;
【基金】：国土资源部公益性行业科研专项经费“乌蒙山区立体特征分异下的土地利用分区及综合评价”(201511003-1)
【分类号】：F323.211

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