SOIL QUALITY ASSESSMENT AT RISK AREAS FOR LAND DEGRADATION OF THANH HOA PROVINCE IN THE PERIOD 2016-2020

Abstract

The assessment of soil quality in areas at risk of degradation in the period of 2016-2020 was carried out to provide data and information on soil environmental quality for making plans and measures of environmental management in Thanh Hoa province in the new period 2021 - 2025. In this study, we use the retrospective method of environmental status reports in Thanh Hoa province in 2016, 2017, 2018, 2019, 2020 by the Department of Natural Resources and Environment of Thanh Hoa province. The results of soil quality analysis at risk areas for land degradation of Thanh Hoa province in the period 2016 - 2020 show that the pH value ranges from 4.18 to 7.08; the content of easily digestible phosphorus increases gradually - the soil is rich in phosphorus; Potassium content from 1.14 to 28.6 mg/100g. The heavy metal indicators have local times where there are positions exceeding QCVN 03-MT:2015/BTNMT: Cu, Pb have monitoring results in 2016, 2017 at 02/12 monitoring positions exceeding QCVN, Zn has 01/12 locations with 2016 monitoring results exceeding QCVN, Cd has 04/12 locations with 2018 monitoring results exceeding QCVN.