东营市雾霾天气成因分析及治理研究

以东营市城区为例,利用近年来空气质量和城市发展统计资料,分析了东营市雾霾天气产生的原因,并根据实际情况,提出了东营市防治雾霾天气的对策及建议.目前,导致东营市雾霾天气形成的主要污染因子为PM10,主要来自建筑扬尘、道路扬尘、汽车尾气等.在继续做好工业污染源控制的基础上,东营市应采取增加绿化面积、加快淘汰黄标车、开展区域性合作等针对性的措施减少雾霾天气的形成.     

Red mud-modified biochar reduces soil arsenic availability and changes bacterial composition

Environmental Chemistry Letters - Worldwide arsenic (As) contamination in soils induces pollution of surface and ground waters, reduces crop quality and yield, and threatens human health....     

Quantification of net carbon flux from plastic greenhouse vegetable cultivation: a full carbon cycle analysis

Plastic greenhouse vegetable cultivation (PGVC) has played a vital role in increasing incomes of farmers and expanded dramatically in last several decades. However, carbon budget after conversion from conventional vegetable cultivation (CVC) to PGVC has been poorly quantified. A full carbon cycle analysis was used to estimate the net carbon flux from PGVC systems based on the combination of data from both field observations and literatures. Carbon fixation was evaluated at two pre-selected locations in China. Results suggest that: (1) the carbon sink of PGVC is 1.21 and 1.23 Mg C ha⁻¹ yr⁻¹ for temperate and subtropical area, respectively; (2) the conversion from CVC to PGVC could substantially enhance carbon sink potential by 8.6 times in the temperate area and by 1.3 times in the subtropical area; (3) the expansion of PGVC usage could enhance the potential carbon sink of arable land in China overall.