Advanced Materials Research Vols. 1073-1076

Abstract: The fundamental principles and methods of ecological function regionalization were defined in this paper based on field investigation in the estuarine wetland of Shenzhen River and Xinzhou River. The regionalization scope of the two rivers estuary wetland was delineated, and the main ecological service functions, such as climate regulation, water purification, material production, biodiversity conservation, wildlife habitats, education, recreation and tourism etc., were analyzed and summarized in accordance with the integrity of the eco-system and the administrative divisions status quo. According to the proposed regionalization principles and methods, the two rivers estuary wetland was divided into 6 ecological function units combined with its service functions and distribution characteristics, which were urban construction control area, terrestrial forest ecological belt, futian national mangrove reserves, mangrove restoration area, off-shore tidal flat reservation and estuary waters comprehensive treatment area. For each ecological function units, the leading service functions, Status quo and existing problems were elaborated, the ecological protection, repairation and restoration directions were pointed out, and the strengthening measures of ecological service function were put forward.

Abstract: Specialist predation is believed to play a crucial role in maintaining biodiversity of ecosystems, whereas its underlying mechanism is still unclear. Here we analyzed a general model of a tritrophic system containing specialist predators. A new graphical approach based on the balance of resource recruitment and consumption was used. The analyses show that specialist predation can promote coexistence of producer species by increasing resource availability, which waken the exploitive competition between producers. The R* rule, the dominant rule in traditional resource competition theory, is still dominant in infertile environment. In rich environment, the occurrence of specialist predator increases the equilibrium resource concentration and thus leads to the coexistence of the weak competitor. In high resource productivity environment all the species can coexist.

Abstract: According to water environment protection, protection of the atmospheric environment, solid waste disposal, and improvement of ecological environment to construct performance appraisal index system of eco-environment protection. Take Zhejiang as an example, researched on the Performance appraisal of eco-environment protection from 2006 to 2012 based on entropy weight method. The results of this assessment were in good correspondence to the regional actual situations, indicating that entropy weight method was applicable and feasible in this field. Using entropy weight method to determine the weights of assessment indices could resolve the problem of many indices not having unique standard, reduce the disturbance of subjectivity in the course of assessment, and reflect the contribution of each index to regional eco-environment protection more objectively. This method offered a new research means to quantitatively assess eco-environment protection, and have certain practical value and popularization meaning in the related fields.

Abstract: During the last 3 decades, developing countries especially China has experienced rapid urbanization process, which on one side have brought great leap forward of local economy as well as local social wellbeings, however on the other side such process has also led to great challenges on local ecosystem, which may jeopardize the potential of cities in these countries to meet their residents’ need and pursue more sustainable future. Therefore, a case study was taken in Yantai, a major city in Circum-Bohai Sea Region, and to assess the impact of rapid urbanization process on the local ecosystem services (ES), hence provided suggestions for pursuing more rational way of development of this city. Results showed that the decentralized pattern of urbanization, although has relatively moderate impact on Yantai’s ES, but may have substantially influences on the city’s sustainable future, therefore measures should be taken on restrain the decentralized urban expansion, reform of local authority regimes toward sustainable governance, as well as transforming regional industrial structure from secondary industry depended to more environmental friendly pattern.

Abstract: In the new historical era, the ecologically fragile region in the west is facing with two major tasks of rapid development and green development. Through a model of comprehensive benefit, we analyze the benefit differences among several industrial organization patterns, and point out that the pattern of circular industrial cluster brings out the most comprehensive benefit and the best organization advantages. It is therefore the optimal industry organization pattern in the ecologically fragile region in the west of China.

Abstract: Green production plans on production processes based on the principle of benefiting ecological and environmental protection, and manufacturers green products to satisfy green consumption. The contents of green production, which in essence is a constantly perfecting process, will keep updating and advancing with technological progress and economic development. Importance-Performance Analysis, IPA, is a methodology frequently used to evaluate performances and enhance competitive strategies. By IPA, this research project evaluated the performance of the firm under study in green production, which was intended as the basis for improvement by the same firm.

Abstract: Clean-tech industry, also identified as the advanced stage of eco-friendly industry and typical high-tech, has to gain enough financial support to develop. Meanwhile, it has provided substantial market opportunities as well as investment options for venture capitalist. In an attempt to form a comprehensive understanding of VC policy preferences in clean-tech sector, relevant studies have been done by researchers from organizations, universities, and firms, from various perspectives, forming an independent “niche” research field. Based on the interactive relation between industry development and clean-tech investing, this paper performs a time-sharing, multidimensional, and dynamic review on international clean-tech policies literatures, focusing primarily on investor preferences. We aim to provide references to the lenses and methods currently used for future research including policy tool design, investment attraction effects, and policy efficiency. Moreover, the findings facilitate the innovation and expansion of related research for China, by which it can form effective financial support for domestic clean-tech industry.

Abstract: The application of the DeNitrification-DeComposition (DNDC) model in soil respiration of winter wheat at the Ecological Experimental Station of Fuping County, China is researched for the year 2013-2014. The applied results indicate that DNDC is available to research soil respiration in cropland agroecosystems of Guanzhong Plain, China. Also the cumulative and seasonal variation emissions of soil respiration and components (root respiration, soil heterotrophic respiration) are estimated. Based on the simulated results, it can be seen that a significant variation appears in winter wheat growing season, where a downward trend starts from planting season to wintering season, and a steady low level at about 8.3 kg C·hm^-2·d^-1 keeps until the overwintering, then a significant upward to harvest, where the top point is almost 101.84 kg C·hm^-2·d^-1, with the total amount is 8342.35 kg C·hm^-2. The seasonal amount of root respiration is 5345.47 kg C·hm^-2, occupies 61.1% of soil respiration emissions.

Abstract: the paper adopts measurement method along with questionnaire method to do research about indoor environment of several universities. Related parameter indexes in measurement are temperature, relative humidity, velocity & concentration of carbon dioxide indoors and outdoors. And the paper employs questionnaire method to get the staff’s subject impression on indoor environment. The results show that while implementing its basic function, university gymnasiums has a tendency to neglect the comfort for staff indoors, and also reflects the relevant issues between air quality and ventilation indoors.

Abstract: Many factors can impact water quality, such as rainfall, topography and soil. These factors are usually naturally formed. In these factors, Land-Use is closely related with human production and living which people can change. It is one of the most key factors influencing the river water quality. With the development of computer technology, it is an important direction of researching Land-Use and Land-Cover Change (LUCC) in the application of water quality modeling. This paper analyzes the relationship between land-use change and the water quality, and introduces the common used water quality model.