College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Xianyang 712100, China.
Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling, Xianyang 712100, China.
Int J Environ Res Public Health. 2022 Nov 30;19(23):16046. doi: 10.3390/ijerph192316046.
The rapid expansion of construction land has been a common phenomenon worldwide, which resulted in the loss of high-quality arable land and severe land degradation. Here, a statistical analysis, together with a field investigation, was carried out in China to address the challenges. This study has gathered data on the reduction of land amount and quality caused by construction activities and has collected the relevant policies to control land deterioration caused by those activities. The increasing amount of farmland and open space are occupied by construction use. The annual growth of construction land from 2001 to 2017 was 43.64 × 10 hm, with an annual average of about 38 × 10 hm of cultivated land being converted to construction land in China. Construction activities usually cause a deterioration of the physico-chemical properties in and around construction site soils. The organic matter of post-construction soil was lower than the pre-construction by 257.4~879.8%. A lack of strong economic incentives for developers, limited effectiveness of measures to control land degradation, and weak requirements and enforcement of relevant laws and regulations allow land degradation from construction activities to remain at a significant level. For more efficiency and success, the study proposes effective measures to control the hazards that occur so widely in China.
建设用地的快速扩张是一个全球性的普遍现象，这导致了优质耕地的流失和严重的土地退化。在这里，通过统计分析和实地调查，对中国的建设用地扩张问题进行了研究，以应对这一挑战。本研究收集了建设用地活动导致的土地数量和质量减少的数据，并收集了控制这些活动导致的土地退化的相关政策。农田和开敞空间不断被建设用地侵占。2001 年至 2017 年，建设用地每年增加 43.64×10^4 hm^2，中国每年平均有大约 38×10^4 hm^2耕地被转为建设用地。建设用地活动通常会导致施工现场及周围土壤理化性质恶化。与施工前相比，施工后土壤的有机质降低了 257.4~879.8%。由于缺乏对开发商的强有力的经济激励，控制土地退化措施的效果有限，以及对相关法律法规的要求和执行不力，使土地退化问题仍处于严重程度。为了提高效率和成功率，本研究提出了有效控制中国广泛存在的土地退化危害的措施。
