Heavy metal pollution in the hottest grain produci

2022-08-26
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Heavy metal pollution in grain producing areas is increasing, and how to deal with soil pollution

China's agricultural land is increasingly polluted by pesticides and heavy metals, which increases the difficulty of implementing China's food safety policy, and may also make the efforts of organic vegetable production and ecological park construction in vain. Although some physical, physical, chemical and biological methods can be used to eliminate and reduce the toxic effects of pesticides and heavy metals, the process needs enough time to consume

how serious is soil pollution? The latest research results released by the Key Laboratory for land surface pattern and Simulation of the Institute of Geographical Sciences and resources, Chinese Academy of Sciences, showed that the over standard rate of heavy metals in cultivated soil in China's main grain producing areas was 21.49%, and the overall pollution was mainly mild, of which the proportion of mild, moderate and severe pollution was 13.97%, 2.50% and 5 respectively, and the standard was increased 10000 times 02%。

it should be pointed out that the developers of NCC have completed a series of experiments. The above-mentioned heavy metal point exceeding the standard rate refers to that 21.49% of the monitoring points exceed the standard. Strictly speaking, it cannot be simply equivalent to the pollution area reaching 21.49%

this pollution level is at a medium level internationally, so it is unnecessary to overestimate it and cause panic, but it cannot be underestimated, because compared with the 19.4% point exceedance rate in the 2014 national soil pollution survey bulletin, the heavy metal pollution area has increased by 2% in four years, indicating that the pollution is still spreading. Considering that once the soil is polluted, it is often irreversible, and the future treatment cost and ecological pressure will be considerable

what is more urgent is that none of the major grain producing areas is immune, and heavy metal pollution is increasing, reaching a "more serious" state. Previously, official data showed that 12million tons of grain are polluted by heavy metals every year. Of course, the biggest harm is that crops grown under heavy metal polluted soil will cause harm to human body. The most typical is Hunan, the former "hometown of non-ferrous metals". The cadmium content in rice samples around Hengyang Hengdong Industrial Park is nearly 21 times higher than the national standard

what are the maintenance methods of the modern citizen spring fatigue testing machine and the value of the equipment? People prefer green organic vegetables without pesticides and fertilizers, but in fact, soil pollution is largely a companion in the process of urbanization. For example, the study mentioned that mining, industry and sewage irrigation are the main sources of pollution, and the areas with the most serious soil pollution are often the "heavy" industrial production and emission areas in industrial cities, urban industrial areas or the junction of urban and suburban areas

citizens under urbanization are actually paying for the negative impact of urbanization by paying higher prices for organic crops. This situation shows that both urban and rural areas are in a complete ecological chain, and the ultimate cost of soil pollution is borne by the whole people, and no one can be spared. In the past, there were many cases of cancer villages, but they often ended up with nothing, because it was too difficult to establish a relationship between pollution and disease

in the past, the propaganda was that whoever pollutes should be treated, but this may not be able to make producers pay the full bill for pollution - soil pollution has a long hidden cycle, and it may take decades for pollution to appear and produce harmful consequences. Therefore, some highly polluting heavy metal enterprises should pollute first and then treat. It turns soil pollution into a tragedy of the Commons. On this point, when the media investigated soil pollution, the vice director of the China Soil Society said, "it won't be your own land in a few years. Who is willing to protect it?"

the increasingly serious heavy metal pollution can be said to be a punishment for the past environmental protection logic. It should be reminded that the existence of soil pollution incubation period means that even if we make efforts to control it now, the heavy metal pollution sources derived from high-speed urbanization and industrialization in the past may not be able to be effectively controlled for a long time in the future, and the pollution surface cannot be ruled out to continue to expand. In such a severe situation, if the width of the lateral crack of the specimen is smaller, or holding the idea of living in the present, regardless of future generations, in exchange for GDP, it will be the biggest development sin

in the past, there were often calls for legislation on the prevention and control of soil pollution. At the end of August this year, the law on the prevention and control of soil pollution was reviewed and approved, and will be implemented next year. As the saying goes, the law is not enough to act on its own, and the legal provisions are only paper constraints after all. To be rigid, there must be a strict supporting punishment mechanism. For example, we should not continue to hold the propaganda logic of "who pollutes, who governs", and put an end to the space of obtaining the right to pollution at economic cost. If pollution occurs, we should be severely punished, and officials should be held accountable

in the face of increasingly diffuse soil pollution and the threat of excessive heavy metals to food security, there is still a lack of determination and long-term vision to deal with it. Maybe such cruel words as "cutting off children and grandchildren" are really not for fun

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