Spatial Distribution Characteristics Of Air Negative Ions In Mohe County

Air negative ions are known as "air vitamins",and their formation is generally related to the ionization of oxygen.Atmospheric lightning,waterfalls,photoelectric effects,etc.,can make partial oxygen in the air ionization,resulting in negative ions.Negative ions can enter the human body,with sedation,blood pressure,cough and other effects,and its presence for human health and the improvement of urban living environment has a very important role.For the negative ions in the air,our most intuitive feeling is that whenever we enter the forest,the sea,or after the rain fine,will feel refreshed,which is essentially the effect of negative ions in the air.In medicine,the negative ion is usually called "Vita oxygen" and "air vitamin",thus,the existence of negative ionfor human existence,and city residential suitability change,has a very important role.The ecological construction in the city,the air anion has an important role in the regulation of city residents' health,improve the function of the human body negative air ion can promote the construction of ecological city,pattern,study of negative ion has important significance for the further construction of city ecological tourism area development and the functional areas of the city.The study of air negative ions started earlier in developed countries.It has been applied for a long time and achieved a lot of results.The research of air negative ions in our country started late,but the experience summarized by predecessors is relatively fast,and the results are also obvious.At present,the study of negative air ions has become a hot issue in the field of air research both at home and abroad,and has become an effective means to improve the air environment.The research on air negative ions started earlier in foreign countries.As early as 1889,the German scientists Elster and Geital confirmed the existence of negative oxygen ions in air,and explored the mechanism of negative ions through experiments.In 1930 s,the study of negative ion began to go deeper.Hamsen,the CRA company of America,invented the first air negative ion generator,which was designed for clinical use.Throughout the study of negative ions in China,it can be divided into two parts.The first part is the research of urban ecosystem,and the negative ion is a scientific research on the sustainable development of urban ecosystem.Wu Zhiping et al.(2000)through the assessment of city green forest and biodiversity,biological communities found the concentration of negative ions is higher than that of single complex biological community,put forward different vegetation structure,has a significant impact on the concentration of negative ions,the second part is about the impact of negative ions and natural geographical factors,which affect elevation,temperature and humidity.Tang Lvjun(2014)studied the relation between air negative ion and altitude.Through the regression analysis of negative ion concentration and elevation,the negative correlation between them was found.In the ecological construction of the city,the air anion can play an important role in the regulation of the health of residents in the city,what's more,the air anion can improve the body function of people and promote the ecologicalconstruction of city.The study of negative ion is also has important significance for the further construction of city ecological tourism and the functional areas of the city.This paper selects Mohe County in Heilongjiang Province as the study area,and explores the negative ion distribution in Mohe County by using TM images and the field survey data,combined with spatial statistics theory,and spatial interpolation method.This paper makes use of the theory of GIS spatial analysis to make analysis of the measured data,and explore the characteristics of the temporal and spatial distribution changes of negative ions,and make correlation analysis of negative ion with temperature and humidity.Combined with remote sensing image interpretation and field sampling data,this paper take on spatial interpolation to make the acquisition of region level mapof negative ion concentration,and analyze the impact on air quality in each area.We take use of the geographic statistics theory,using the negative ion concentration and data of each factor to build multivariate regression model and make correlation analysis,and establish the inversion model of experimental region.Finally,we establish the prediction map of negative ion concentration of Mohe County,to provide guidance for the better improvement of the living environment and the ecological environment of the city.