四川汶川-茂县河谷地区土地质量地球化学调查成果及其意义  

Results and Significance of Land Quality Geochemical Survey in the Valley area of Wenchuan and Maoxian County,Sichuan Province

作　　者：刘晓波[1,2] 金立新 徐洲[1,2] LIU Xiaobo;JIN Lixin;XU Zhou(Sichuan Institute of Geological Survey,Chengdu 610081;Sichuan Provincial Key Laboratory of Strategic Evaluation and Utilization of Rare Earth Resources,Chengdu 610081)

机构地区：[1]四川省地质调查院,成都610081 [2]稀有稀土战略资源评价与利用四川省重点实验室,成都610081

出　　处：《四川地质学报》2024年第4期756-760,共5页Acta Geologica Sichuan

基　　金：西南重金属高背景区1︰25万土地质量地球化学调查(中地调审[2018]0395-21)。

摘　　要：对四川阿坝州汶川茂县优选耕地区开展了土地质量地球化学评价工作,结果表明,研究区土地质量总体以无风险土壤为主,占总面积的86.69%。土壤养分总体呈丰富和较丰富状态,仅磷和钾在局部地区较缺乏;土壤环境质量整体良好;研究区土壤质量以优质土壤为主,占全区面积的86.7%;研究区绿色食品产地、绿色富硒土地资源较丰富,分别有74 576亩和8 218亩。土地质量地球化学评价成果对土地利用、规划布局、发展现代农业、提高耕地质量等方面具有重要指导意义。The land quality geochemical evaluation was carried out in the optimal cultivated land area of MAO County,Wenchuan County,Aba Prefecture,Sichuan Province.The results showed that the land quality of the study area was dominated by risk-free soil,accounting for 86.69% of the total area.Soil nutrients were generally abundant and relatively abundant,only phosphorus and potassium were scarce in local areas,and soil environmental quality was generally good.The soil quality in the study area was mainly high quality soil,accounting for 86.7% of the total area.The green food producing area and green selenium-rich land resources in the study area are abundant,which are 74 576 mu and 8 218 mu respectively.The results of land quality geochemical evaluation have important guiding significance for land use,planning and layout,development of modern agriculture and improvement of cultivated land quality.

关 键 词：地球化学评价 土地质量 富硒土地 四川阿坝州 

分 类 号：P596[天文地球—地球化学]