The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
For developing forestry ecological economy is a most watched problem recent years, to analyze the relative economic data and find out existing problems, will greatly help governments revise the policies and promote rapidly development of forestry ecological economy. Based on the support vector regression theory, the thesis builds the regression analysis model of our forestry ecological development,...
The research on relationships among terrain, climate and vegetation is a main topic of ecological geography. Taking the moderate resolution imaging spectroradiometer based enhanced vegetation index (MODIS-EVI) and Parameter elevation Regressions on Independent Slopes Model (PRISM) data as the indices, we analyzed the spatial heterogeneity of vegetation in southern Yunnan province of China and its...
In recent years, serious environmental pollution has been one of major constraints of China's sustainable economy, for the most part, the rapid growth of energy consumption is attributable. In this paper, we firstly use factor analysis method to do evaluation on environmental pollution degrees of China's 30 provinces, municipalities and autonomous regions (not including Hong Kong, Macao, Taiwan and...
Based on the data of multi-temporal point TM images, by applying the theory of Ecosystem Service Value, the Gravity Center Model, ESDA method and so on, the paper calculates the ecosystem service value in Circum-Taihu Lake region in 1985, 1995, 2000, 2005 and analyzes the characteristics of the gain and loss of the ecosystem service value, their spatial difference changes, the spatial pattern evolution...
The distribution of picoplankton (Synechococcus, Prochlorococcus, Picoeukaryotes and heterotrophic bacteria) and their relationships with environmental factors have been investigated in Bailianjing River near Huangpu River in Shanghai, China. The average abundance of Synechococcus, Prochlorococcus, picoeukaryotes and heterotrophic bacteria were 103, 103, 104 and 106 cells mL-1, respectively. The abundance...
Continuous long-term measurements of carbon fluxes have been obtained by improved technology at the ecosystem scale and under natural conditions. Nevertheless, these are still point measurements with limited geographic coverage Quantitative extrapolations and scaling-up of tower station measurements are now urgently needed for carbon cycle research. This paper attempts to solve this problem by combining...
This study provides an analysis of environmental factors, vegetation types as well as species distribution in 46 sites in the southern part of Gurbantunggut desert, and focuses on the vegetation-environment relationships. A total of 104 species belonging to 80 genera, 27 families of the vascular plants are recorded. The largest families were Compositae, Chenopodiaceae, Cruciferae and Leguminosae....
The urban thermal environment problems have become more and more serious and prominent with the rapid development of urbanization, and the impacts of landscape patterns on urban thermal environment also become one of the hot topics and key problems in urban ecology. A case study in Changchun in Jilin Province of China was carried out, further analysis referred to quantifying spatial patterns of urban...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.