Research on Soil Environmental Quality and Planting Suitability Evaluation of Cuilan Producing Area in Yuexi, Anhui Province
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摘要: 笔者选取岳西县的来榜地区作为研究区，按照8个点/km2的密度采集表层土壤样品，系统分析了土壤样品中Cd、Hg、As、Se等21项元素指标。采用土地利用现状图斑作为评价单元，开展了土壤环境质量评价。通过层次分析法，根据岳西翠兰适生条件，选取了土壤pH值、土壤质地、土壤类型、土壤肥力、土壤环境质量、坡度、坡向、海拔和岩性等9个评价指标，构建了岳西翠兰种植适宜性评价体系。采用模糊综合评价方法进行了岳西翠兰适宜性评价，并利用1：25万土地质量地球化学数据对岳西县翠兰种植适宜性进行了初步评价。结果显示，工作区内土壤环境质量较好，综合土壤环境质量以低于风险筛选值为主，占97.14%，主要风险因子为Ni、Cr、Cu元素。工作区内岳西翠兰高度适宜、中等适宜种植区面积分别为11.51 km2、21.66 km2，约占评价总面积的31.2%、58.72%。岳西县翠兰种植高度适宜区主要分布于包家乡、主簿镇、头陀镇、来榜镇和河图镇等地。上述结论可为岳西县调整和优化岳西翠兰布局与生产和土地生态管护提供依据。Abstract: This paper selected Laibang area of Yuexi County as the research area. Surface soil samples were collected at a density of 8 points/km2.Twenty-one elements of Cd, Hg, As, Se, etc were analyzed. Taking the land use status map as the evaluation unit, the work carried out soil environmental quality assessment. Based on the analytic hierarchy process, nine evaluation indexes such as soil pH, soil texture, soil type, soil fertility, soil environmental quality, slope, aspect, elevation and lithology were selected to construct suitable conditions of Yuexi Cuilan Planting suitability evaluation system. The suitability evaluation of Yuexi Cuilan was carried out by using fuzzy comprehensive evaluation method. The suitability evaluation of Cuilan planting was evaluated by using 1:25 million land quality geochemical data. The results showed that the soil environment quality in the work area was good, and the comprehensive soil environmental quality was lower than the risk screening value, accounting for 97.14%. The main risk factors are Ni, Cr and Cu. The most suitable planting area is 11.51 km2 and the less suitable is 21.66 km2, which is about 31.2% and 58.72% of the total area. The highly suitable areas are mainly distributed in Baojia Township, Diandian Town, Toutuo Town, Laibang Town and Hetu Town. The research provides a basis to adjust and optimize the layout and production of Yuexi Cuilan in Yuexi County, and also the ecological management of land.
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Keywords:
- Yuexi Cuilan /
- soil environmental quality /
- planting suitability /
- GIS /
- Laibang Area /
- Yuexi County
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