Results and Significance of Land Quality Geochemical Survey in the Valley area of Wenchuan and Maoxian County,Sichuan Province
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 modem agriculture and improvement of cultivated land quality.
geochemical evaluationland qualityland riched in seleniumAba Prefecture
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