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Based on remote sensing and ecological survey data, paper selected eight categories of typical ecological factors, defined the grades and weight of their impact on the ecological environment, and assessed the ecological sensitivity of Taierzhuang with GIS technology and weighted superposition method. Ecology sensitivity of land was divided into five categories through fuzzy clustering and consolidation...
In recent years, there has been over two million hm2 of Eucalyptus tress to be planted in Mainland China, and Hainan is one of the most important areas. Eucalyptus plantation yields substantial profits, while a series of relevant ecological problems have become topics of academic arguments. The annual rainfall is about 1000 mm in the west and southwest of Hainan, and the drought severity index is...
The idea of “Negative Planning” is just brought forward for the shortage of current developmental position of city and traditional urban planning for our country. It claims that it should be first to plan the ecology infrastructure of the region and establish a secure Patten for landscape, then distributing all kinds of urban land for construction base on it. This article attempts to “Negative Planning”...
Waste coal-gangue piles not only occupied and destroyed large fields, but also brought about a series of problems of environment. So it is significant to do the research on restoring vegetation of coal-gangue pile in for local environment. The naturally restored vegetation status and restored vegetation status under artificial interference of coal-gangue pile were investigated by traditional plot-survey,...
Terrestrial distribution with soil bacteria, fungi and actinomycetes amount of the Xilin River natural wetland was investigated. The result that soil microbial community compositions of typical grasslands and natural wetlands, with the elevation changes gradually reduce the soil moisture content from bed sludge (HX) to typical steppe (DT), changed significantly. The total microbial and aerobic bacteria...
Regional Land use changes display not only in land quantity and quality but also in land use pattern. As an important characteristic of land use, the stability is also a major characteristic of land use dynamic and ecological process in land use pattern, For the coordinate of regional land use patterns and environmental condition, we should pay attention to land use changes, at the same time, pay...
Urban lakes locate in city area or non-agricultural towns, which are very important to city ecosystem and habitation environment. In this paper, nine lakes of Nanjing city (Huashen Lake, Baijia Lake, Yueya Lake, Mochou Lake, Nanhu Lake, Pipa Lake, Qianhu Lake, Zixia Lake, and Xuanwu Lake) were selected and water samples were collected seasonally, so as to analyze water quality and trophic status....
On the base of a large numbers of related-references, the paper introduces the development's background of landscape river home and abroad, then starts from the the basic concept of ecological river landscape, investgates the feature and role of ecological river landscape in Tianjin Airport Industial Zone. We take examples of related research and practical experiences abroad, and point out the existing...
Based on the data of nature, society, economics and water resources of Tarim River in 2005, we evaluate the water resources carrying capacity for the river by means of the theory of maximum entropy. The results show that the comprehensive grade is 2 for Bazhou, Aksu and Kashi area, where the current water exploitation and use has reached a relative high degree, and there is only a very limited water...
a pure culture of Chlorella vulgaris or Prococentrum lima, commonly found in the ship ballast water, was exposed to low-pressure (LP) UV lamps. Irradiated pure culture suspension was subsequently incubated for 10 days under white light fluorescent lamps. During incubation, cell density, absorbance and relative fluorescence intensity were analyzed. The results show that the growth of C.vulgaris and...
Based on RS and GIS, this paper analyzed the dynamic characteristics, spatial differences, distributive characteristics of different slope and elevation of land use change in Danjiangkou reservoir from 1990 to 2007. And it also analyzed the driving factors of land use change. Results show that all types of land use increased to different degrees except dry land and paddy field. With maximum annual...
Along with the development of human society and high demand on environmental quality, the assessment of landscape impact has played an important role on the regional planning construction or exploitation project. However, there are still many problems in landscape impact assessment process, because it is difficult to determine the standards and rating scale, besides the evaluation method on landscape...
In this paper the data in central China from routine meteorological station and registering rain gauge were used to get the precipitation of every per hour. The feature of the precipitation and its interannual and interdecadal variations were analyzed. The results showed that, the rainfalls in flood season of central China were differences in spatial and temporal distribution. The precipitation concentration...
Green logistics' level of development has become a measure of a country's overall competitiveness and an important symbol of the enterprises are gradually becoming the country's economic development as well as a source of profit. Designing of green logistic System is a important part of developing course. The paper first introduces the theory of green logistics' functional factor, after the introduction...
The atmospheric environmental pollution has become a global environmental problem. It is imperative to monitor the toxic or harmful substances and environmental risk source in the atmosphere. However, it is the main contents of atmospheric environmental monitoring work to optimize the monitoring sites determination. This paper illustrates the implication and necessity of the monitoring sites optimization...
As an ecological process, soil erosion which endangers human existence and development has been one of environmental problem around the world for a long time. Affected by various environmental factors, soil erosion risk has obvious spatial distributions. Taked the Zhu River small watershed of red eroded area of South China as an example, selected the five risk factors of rainfall erosion, terrain...
Recently, the study of nitrous oxide (N2O) and methane (CH4) emission in the process of treating domestic wastewater drived more and more people's attention.N2O is by-product of nitrification. Some studies showed that N2O emission influenced by temperature, pH value, DO, salinity and plant species. CH4 was produced in strictly anaerobic conditions through the reduction of CO2 by methane bacteria....
With the rapid development of agriculture tourism, many environmental problems emerged. By combining agriculture tourism with ecology theory, the categories of the environmental problems of developing agriculture tourism and the difference between the ecological method and traditional method of environmental quality assessment were discussed in the paper. At the same time, the general methods of environmental...
Pot experiments were conducted to investigate the effects of three different chelating agents(EDTA, citric acid, NTA) that intensify the absorption and accumulation of Cu, Zn in vermicompost for Euchlaena Mexicana Schrad. The results indicated that chelating agents addition could inhibit the growth of Euchlaena Mexicana Schrad, and the inhibition on the roots is greater than the shoots. At the same...
Chemical sequential extraction was employed to analyze the phosphorus species in surface sediments in the representive five sites of Lake Baiyangdian. The results showed that exchangeable phosphorus(Ex-P) was the lowest fraction and had little effect to eutrophication of Lake Baiyangdian. The ironbound phosphorus(Fe-P) was the main fraction. The release of Fe-P in sediment was an important process...
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