The original article was attributed to Great Wall Network and dated July 3, 2012, at 09:41:08. The observations, estimates and forecasts below belong to that historical report and should not be read as a current assessment of Hebei’s soil.
Sources of metals in soil
The article described concerns about pollution caused by human activities, including the dumping and accumulation of solid waste, infiltration of wastewater and atmospheric gases and dust reaching soil through rainfall. Experts quoted in the report considered heavy-metal pollution particularly difficult and costly to remediate because contaminants can persist in soil.
It listed mercury, cadmium and lead among the metals of concern, alongside zinc, copper and nickel. Reported sources included excessive pesticide application, industrial wastewater, sludge, sewage irrigation and atmospheric deposition. The article cited an estimate of approximately RMB 20 billion in annual economic losses nationwide; it did not provide the underlying calculation, so the figure is retained only as a historical claim.
Luan Wenlou, a Hebei provincial political consultative conference member and director of the Institute of Resources and Environmental Engineering at Shijiazhuang University of Economics at the time, said that atmospheric deposition accounted for approximately 50%–90% of total heavy-metal input in the provincial context discussed. Fertilizer use followed, while sewage irrigation mainly caused localized contamination. Zinc, lead, chromium and cadmium were among the elements mentioned.
Luan’s team had monitored deposition for one year at 60 farmland sampling locations across Hebei’s plains, avoiding nearby sources such as flues and roads. According to the report, the largest metal input fluxes occurred in the Cangzhou area, indicating substantial atmospheric influence on those agricultural systems. Deposition was lower in the Tangshan–Qinhuangdao area than on the piedmont plain of the Taihang Mountains. Several metals in the latter area showed a northwest-to-southeast banded distribution.
The report noted that soils in cities with concentrated human activity were more likely to be affected than distant farmland. Atmospheric transport could nevertheless carry metal-bearing dust into agricultural areas, expanding the affected area and making source control more difficult.
Historical warning and prevention proposals
The article stated that Hebei’s overall land environmental quality was relatively good at the time, with severe contamination at individual locations rather than extensive contiguous areas. It referred to some soils as exceeding the then-used Class III classification. These historical categories are not a substitute for an assessment under currently applicable standards.
Luan warned of deterioration over the following 10–50 years if land protection and pollution reduction were neglected. The report cited a conditional forecast that the share of Class I land could fall from 89.89% to 0.88% after 2054, leaving fewer than 700 square kilometers. The article does not include the model or its assumptions in sufficient detail for verification. This was a forecast made in 2012, not an observed outcome or an updated prediction.
The report emphasized the lag between contamination and its recognition, and the time needed to evaluate soil quality. It called for prevention, elimination or control of pollution sources, and public education about long-term impacts.
For atmospheric deposition, the cited proposals included using higher-quality coal with lower sulfur and ash content in densely populated urban areas, controlling road dust, and establishing permanent green belts around cities. Other recommendations covered stronger emission reduction, monitoring and early warning in local priority areas, and a proposed fluorine limit for fertilizers.
Luan also urged better legislation on land protection and restoration, smoother administrative coordination, and soil-remediation courses in provincial universities to develop the skills needed for future work.
Original editor credit: Lin Yan.
Archive note
This article is adapted from the original website archive. Roles, figures, event arrangements and opinions relate to the period described and do not represent current conditions.
Original source; archive consulted: 2026-09-29.