中国における農地への産業用固体廃棄物の影響による環境リスク:包括的な概要
Xiaobin Wang1, Xiang Yan2, Xiuying Li3
1Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China. wangxiaobin01@caas.cn.
Environmental geochemistry and health
|September 4, 2025
まとめ
中国の農業用地に使われる産業用固体廃棄物は 深刻な環境リスクをもたらします ISWからの汚染物質は土壌と作物に蓄積し,安全限界を超え,食品の安全性を脅かしています.
科学分野:
- 環境科学
- 土壌科学
- 農業科学
背景:
- 中国の急速な工業化は,かなりの工業固体廃棄物 (ISW) を生み出しています.
- 農業用地の修復と並行して,安全なISWの処分と利用のための圧力が増加しています.
- 農業用地に ISW を組み込むことは環境上の懸念を提起します
研究 の 目的:
- 中国の農業用地に7種類のISWを適用することに関連する環境リスクの包括的な概要を提示する.
- ISWが土壌環境と食品安全に及ぼす影響に関するデータを分析する.
- ISWの土地利用による環境リスクの評価
主な方法:
- 科学的データベースの文献レビュー
- 中国の農地に対するISWの影響に関する既存のデータの分析
- 土壌汚染と食品安全の側面に焦点を合わせる
主要な成果:
- ISWからの汚染物質 (Hg,Cd,As,Pb,Cr,Ni,Cu,Zn) は土壌に蓄積し,中国のリスクスクリーニング値 (GB 15618-2018) を超えています.
- 汚染物質 (Hg,Cd,As,Pb,Cr,Cu,Zn,F) が作物の中で検出され,食品安全基準を超えています (GB 2762-2022).
- 土壌と食物連鎖への二次汚染の潜在的なリスクが特定されています.
結論:
- 中国では土壌の健康と食品の安全に重大な危険性があります.
- 農地でのISWの処分を制限する厳しい規制があります.
- ISWの事前処理は不可欠であり,シメント製造などの代替用途が推奨されています.
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