Evolution and interaction of ecological civilization construction pattern from the perspective of path dependence–based on the panel data of Jiangsu Province,China

Environment, Development and Sustainability - Ecological civilization is an advanced form after industrial civilization. Improving China's ecological civilization system will provide developing...     

Regional convergence of energy-environmental efficiency: from the perspective of environmental constraints

Environmental Science and Pollution Research - This paper conducts a convergence analysis on the energy-environmental efficiency to explore the differences between regions that reflect the...     

硬质河岸和水体富营养化河道的综合治理技术:以柴桑河为例

将富营养水体治理与硬质河岸改造相结合,能够提高水体与河岸的交互能力,恢复河流生态系统的自净能力.以位于四川省天府新区眉山片区中心城区的柴桑河河段(长度1.5km,宽度80～100m,水深约1.85m)为例,通过铺设护岸专用基料、设置滴灌系统和播撒花草种子对硬质河岸进行生态重建,通过向水体中施用除磷剂、微生物菌剂及采用生态浮床、水车增氧等措施,降低了水体中的氮磷含量,利用太阳能为整个处理系统供能,实现了硬质河岸和富营养水体的综合治理.项目实施后,通过半年的监测和观察,结果表明:柴桑河水体中总磷(TP)、氨氮(NH3-N)、高锰酸盐指数(CODMn)和总氮(TN)含量明显降低,TP和NH3-N由劣V类提升至地表水Ⅲ类,CODMn由劣V类提升至地表水Ⅳ类,TN由劣V类提升至地表水V类;河道内鱼类、藻类、水草的多样性增加,硬质河岸完全被植被覆盖,植物种类达数十种,自然景观恢复,河流生态自净功能显著增强,有利于使水体保持健康稳定.     

土壤和水体中PCP—Na残留的紫外线光度分析

待测样经蒸馏、乙醚萃取、氢氧化钠反萃取后,常见干扰物质均可以除去,PCP-Na溶液在波长320nm处有最大的吸收峰,其它酚类物质在该波长处不干扰测定。本法操作简便、快速、准确、经济,稳定性好。本法测定PCP-Na的回收率,在水中为100.74％,在土壤中为91.45％。     

Can corporate environmental responsibility improve environmental performance? An inter-temporal analysis of Chinese chemical companies

The empirical research on the relationship between corporate environmental responsibility and environmental performance remains in the one-way positive impact and lacks the research on nonlinear relationship between them. Based on the stakeholder theory, this paper selects A-share chemical–listed companies in China from 2006 to 2017 as the research samples and uses generalized method of moments (GMM) model to investigate the impact mechanism between corporate environmental responsibility and environmental performance. The results showed that corporate environmental responsibility positively impacted on environmental performance; however, the impact was not significant. The corporate environmental performance positively and significantly impacted on environmental responsibility. Moreover, results reported that industry competition played a positive regulatory role in corporate environmental responsibility affecting environmental performance and has played a positive role in corporate environmental impact on environmental responsibility. A nonlinear relationship (inverted “U” shape) between environmental responsibility and environmental performance was found. The study results stress to establish a fair and perfect market competition mechanism to improve the environmental performance of chemical industries in China.

     

Evolution of spatial–temporal characteristics and financial development as an influencing factor of green ecology

Environment, Development and Sustainability - This study aims to determine the impact of financial development on green ecology to promote cleaner production. Particularly, it estimates the...     

Exploring new ideas for sustainable development of urban agglomerations-based on the coupling of people’s livelihood and environmental governance

Environment, Development and Sustainability - Peoples’ livelihood and environmental governance are interrelated and interact with each other, which is a new starting point for the study of...