浅议环境监理员的威信及其形成机制

论述了环境监理员的工作威信源于法权作用力和自然影响力。指出环保行政主管部门乃至社会各界应用环境监理营造一个良好的氛围，以增强法权作用力；环境监理人员要不断加强自身修养，以提高自然影响力。     

喷射诱导气浮用于废水脱油的动力学研究

喷射诱导气浮应用于污水脱油前景广阔。建立了数学模型，进行了单级间歇模拟实验，测定了脱油动力学常数及极限脱油浓度。验证了脱油动力学方程，利用实验结果，得到了用以计算多模型中参数的关联式。所提出的数学模型为建立设计计算和药剂评价方法提供了依据。     

上覆富水砂层地铁隧道掌子面变形特征数值试验研究∗

为研究地铁隧道在上覆富水砂层下的变形特征，以典型上覆富水砂层隧道—青岛地铁 2 号线啤—苗区间为工程研究背景，采用 FLAC 3D 数值模拟软件对不同富水砂层厚度与隔水层厚度工况下隧道掌子面位移、塑性区变化特征进行了研究分析。研究结果表明：隔水层厚度是影响掌子面是否发生涌水涌砂的主控因素，在开挖过程中应时刻注意富水砂层距离隧道顶板的安全距离，临界隔水层的厚度为 3 m。同时，当隔水层厚度越大、富水砂层厚度越小时，掌子面变形就会越小。以临界工况为研究对象，通过分析开挖过程中隧道拱顶—拱腰—掌子面应力和位移变形规律，引入了位移释放系数和应力释放率两参数来揭示围岩与掌子面在隧道开挖过程中的影响关系。通过进一步拟合掌子面失稳破坏预测方程，得到了掌子面变形释放率拐点先于同一断面围岩径向变形且发生在开挖到目标断面之前的重要结论，因此在实际隧道开挖过程中应将掌子面的变形作为首选敏感监测指标。研究结果可为该不良地质条件下隧道掌子面稳定性和预加固时机选择提供一定的理论指导。     

Linking land degradation and restoration to ecosystem services balance by identifying landscape drivers: insights from the globally largest loess deposit area

Environmental Science and Pollution Research - Land degradation is one of the most serious environmental challenges that profoundly affects ecosystem services (ESs), which further threaten...     

Open Pore Morphology Evolution in Poly(butylene succinate)/Chitin Nanocrystal Nanocomposite Foams

Journal of Polymers and the Environment - In recent decades, biodegradable polymeric open-porous foams have been engaging increasing interests owing to their biodegradability, porosity and...     

Association of selenium,arsenic, and other trace elements in drinking water and urine in residents of the plateau region in China

Environmental Science and Pollution Research - Drinking water is considered to be an important exposure pathway for humans to ingest trace elements; human urine samples are widely accepted...     

脲酶抑制剂对EICP防风固沙效果的影响研究

植物源脲酶诱导碳酸钙沉积(EICP)的固化技术因其环境友好且经济高效，能够在荒漠风积沙表面形成固化层，起到防风固沙作用，逐渐被应用于土地荒漠化和沙化治理。然而，碳酸钙在土体表面的快速沉积，产生孔喉效应，使碳酸钙积淀在土体表面，造成固化深度浅、固化效果不均匀。为此，使用脲酶抑制剂延缓尿素水解，实现对碳酸钙沉淀生成速率的调控，进而优化土体表面固化效果，提高其防风固沙能力。结果表明，NBPT 的添加能有效延缓尿素水解速率，降低初期碳酸钙的生成速率，但不影响碳酸钙最终生成量。NBPT 的抑制效果与浓度、混合时间关系密切，浓度越高，混合时间越短，其抑制效果就越好。与未处理试样相比，无论是否添加 NBPT，经 EICP 处理的试样抗风蚀性均明显提高。向 EICP 溶液中添加 NBPT 能有效改善土体固化层表面强度、厚度和碳酸钙分布，浓度为 0.1 g/L 固化效果最佳。SEM 和 XRD 试验结果显示，添加 NBPT 后，碳酸钙晶体形貌多为球状和针簇状，而这种针簇状晶体之间的相互交织与嵌套可提高 EICP 固化效果。     

Effect of Plasticizer Content on the Structure and Properties of SPI/MA-g-PBAT Blend Films

Journal of Polymers and the Environment - Soy protein isolate (SPI) has the advantages of low cost, easy processing, stable performance and so on. However, the processing temperature of SPI is...     

A qualitative systematic review of governance principles for mangrove conservation

Management of mangrove ecosystems is complex, given that mangroves are both terrestrial and marine, often cross regional or national boundaries, and are valued by local stakeholders in different ways than they are valued on national and international scales. Thus, mangrove governance has had varying levels of success, analyzed through concepts such as principles of good governance and procedural justice in decision-making. Although there is substantial research on case studies of mangrove management, global comparisons of mangrove governance are lacking. This research aims to fill this gap by comparing relationships among qualities of governance across mangrove social-ecological systems worldwide. Through a systematic literature search and screening process, we identified 65 articles that discussed mangrove governance and conservation. Case studies in these articles, drawn from 39 countries, were categorized as top-down, bottom-up, or comanaged and thematically coded to assess the influence of eight principles of good governance in mangrove conservation success. Across all three governance systems, the principles of legitimacy, fairness, and integration were most important in determining conservation success or failure. These principles are closely related to the concept of procedural justice, highlighting the importance of stakeholder inclusion throughout all stages of mangrove management. Thus, we recommend clearly defined roles for all governance actors, transparent communication of policy development to stakeholders, fairness in both process and outcome, and careful consideration of sustainable access to conservation resources.     

Microbial communities in swamps of four mangrove reserves driven by interactions between physicochemical properties and microbe in the North Beibu Gulf,China

Environmental Science and Pollution Research - Mangroves are distributed in coastal and estuarine regions and are characterized as a sink for terrestrial pollution. It is believed that complex...