Mining activities in the upper reaches of the Diaojiang River basin have caused severe soil environment changes, especially in soils along the Diaojiang River. The flooding has resulted in the deposition of mine wastes on the arable land, and caused sever Mining activities in the upper reaches of the Diaojiang River basin have caused severe soil environment changes, especially in soils along the Diaojiang River. The flooding has resulted in the deposition of mine wastes on the arable land, and caused sever