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41.
本文对环境检测的作用进行了总结,包括环境检测是环境影响评价的基础、环境检测是环境保护的依据、环境检测促进环境管理工作等,提出了环境保护措施,需要增加资金投入力度、完善环境检测法律保障体系、合理使用环境检测新技术、构建环境检测质量控制体系、完善环境监管保护方法来有效地保护环境,提升人们的生活质量。 相似文献
42.
We employed ecologically using Mexh and Mori wavelet methods to analyze the cycle phenomena and their maintaining mechanisms of the Haloxylon ammodendron distribution in complex longitudinal sand ridges (CLSRS). The results showed that ecologically using wavelet can distinguish H. ammodendron distributed in parallel-shaped, lattice-shaped and fork-shaped dunes with a dominant cycle of 165–180 m, 100–110 m and 70–80 m, respectively. Besides the dominant cycle, ecologically using Mori wavelet also showed 2–3 minor small peaks on different scales. The mechanisms to maintain the cycles at multi-scales of H. ammodendron relies on the seed spread, interference intensity in different topography and soil properties. The formations, configurations and presences of the three types of dunes should have some direct relations with the wind fields of the areas where the patterns are located, and also with the ground surface conditions. If the distribution pattern is periodic, meanwhile the abrupt change points are significant; we can predict the H. ammodendron distribution pattern in a certain area. 相似文献
43.
Abstract Rural–urban land conversion is an inevitable phenomenon in urbanization and industrialization. And the decision-making issue about this conversion is multi-objective because the social decision maker (the whole of central government and local authority) has to integrate the requirements of different interest groups (rural collective economic organizations, peasants, urban land users and the ones affected indirectly) and harmonize the sub-objects (economic, social and ecological outcomes) of this land allocation process. This paper established a multi-objective programming model for rural–urban land conversion decision-making and made some social welfare analysis correspondingly. Result shows that the general object of rural–urban land conversion decision-making is to reach the optimal level of social welfare in a certain state of resources allocation, while the preference of social decision makers and the value judgment of interest groups are two crucial factors which determine the realization of the rural–urban land conversion decision-making objects. 相似文献
44.
Western China has lagged a lot in terms of industrial structure and economic development,compared with the national average.And China announced its target of CO_2 emission reduction,i.e.by 2020,CO_2 emission per GDP will drop by40-45%compared with 2005.The target will be incorporated into China's long-term industrial planning.Against this background,this paper will make a comprehensive examination of the industrial development of Western China,aiming to discover a green and compatible way.First,we analyze the spatiotemporal evolution of regional industrial structure for the period 2000-2010.Second,we try to discover the industrial structure optimization path for Western China by employing the Vector Auto Regression model.Lastly,we try to provide some advice and suggestions for further industrial development in Western China.Our examination shows that further industrial development in Western China should pay full attention to resource conservation and recycling,and develop on a green and compatible path. 相似文献
45.
This study investigated a combined low-thermal and CaO2 pretreatment to enhance the volatile fatty acid (VFA) production from waste activated sludge (WAS). The fermentative product was added to a sequencing batch reactor (SBR) as an external carbon source to enhance nitrogen removal. The results showed that the combined pretreatment improved WAS solubilization, releasing more biodegradable substrates, such as proteins and polysaccharides, from TB-EPS to LB-EPS and S-EPS. The maximum VFA production of 3529 ± 188 mg COD/L was obtained in the combined pretreatment (0.2 g CaO2/g VS + 70 °C for 60 min), which was 2.1 and 1.4-fold of that obtained from the sole low-thermal pretreatment and the control test, respectively. Consequently, when the fermentative liquid was added as an external denitrification carbon source, the effluent total nitrogen decreased to Class A of the discharge standard for pollutants in rural wastewater treatment plants in most areas of China. 相似文献
46.
Ji Yanhu Liu Bin Song Jian Pan Rubing Cheng Jian Wang Heng Su Hong 《Environmental science and pollution research international》2022,29(30):45449-45460
Environmental Science and Pollution Research - The evidence on the health and economic impacts of air pollution with schizophrenia is scarce, especially in developing countries. In this... 相似文献
47.
Chao Ling Sun Yajun An Zhen Li Juan Wu Weidong Liu Yue Song Jie 《Environmental science and pollution research international》2022,29(11):15999-16005
Environmental Science and Pollution Research - Previous studies have reported regional variations in the relationship between ambient temperature and dermatitis, which therefore remain... 相似文献
48.
Ahmed Mansoor Song Huiling Ali Hussain Shuai Chuanmin Abbas Khizar Ahmed Maqsood 《Environmental science and pollution research international》2023,30(9):22787-22807
Environmental Science and Pollution Research - Anthropogenic activities have increased atmospheric concentrations of greenhouse gas emissions, which have observably increased global temperature.... 相似文献
49.
Wang Yuhui Zhou Panpan Song Xinshan Xu Zhongshuo 《Environmental science and pollution research international》2023,30(9):22606-22616
Environmental Science and Pollution Research - Considerable advances have been made in the substrate design and operation strategies of constructed wetlands to facilitate nitrogen elimination.... 相似文献
50.
Jiang Ruixue Han Dongmei Song Xianfang Zheng Fandong 《Environmental science and pollution research international》2022,29(24):36100-36114
Environmental Science and Pollution Research - Reclaimed water (RW) has been widely used as an alternative water resource to recharge rivers in mega-city Beijing. At the same time, the RW also... 相似文献