Forest Ecosystem Services Of Modulating Temperature Based On "3S" Technology Of Shandong Province

Increasingly serious global climate change and environmental problems protrude the forest ecological value, making people recognize day by day that ecological system can provide tremendous economic value to mankind on condition that the forest ecological service is deeply and quantitatively studied. Hence, the task can help to promote reasonable exploitation of natural resources and be beneficial to ecosystem protection and, ultimately, to human self sustainable development. With the development of the modern science technology, tools, methods and technical means in forest resources monitoring and management represented by 3S(GPS, GIS& RS)are getting wide application in the study on forest ecological service.The paper takes Shandong Province's forest resources as the object of study , with the support of 3S technology and statistics data, studies on the air temperature regulation of forest resource ecological service. The ecological services of air temperature regulation for different tree species and different seasons during 2000-2006 in Shandong province are quantitatively studied by using TM data, MODIS temperature, vegetation index, the field surveying data and the meteorological data in Shandong, combining with GIS. This study provides theoretical basis for afforestation planning and management and dynamic update of forest resource, it also provides new technological means for the study on forest ecological service and promotes forestry sustainable management and development in Shandong .The conclusions of the paper are as followed:1)In summer forest has temperature decrease function, mainly manifests in May to September; In winter it has heat preservation function, mainly displays in November to February, the heat preservation effect is inferior than decreasing temperature effect does.2) LST (Land Surface Temperature) has negative correlation with the NDVI in the day, however, in the evening, LST has no correlation with NDVI at all. In Summer LST and NDVI are the inverse correlation relations, but in the winter they are positive correlation , that is in summer forest plays the temperature decrease role, in the winter it funtions as heat preservation. The smaller the area coverage is, the stronger LST and the NDVI relevance is. 3) The temperature change in forest is less than that in farmlands and cities, forest functions more temperature control than farmland; decreasing temperatuer effect is more obvious when the forest temperature is higher in summer, the effect of keeping warmth is rather obvious when the temperature is lower in the winter. Compared to farmand, forest is more powerful for climatic change and extreme value weather alleviation. 4) Decrease effect is different from various species and different time , the coniferous forest class in late winter and early spring is pretter lower. 5) LST and NDVI change has stronger relevance than LST and precipitation's change. 6) Forest region distribution is not remarkable to atmospheric water vapor diurnal variation.The main innovations are as follows: (1)Among Shandong territory criterion, an analytical study on ecological service function on forest attenperaton has been conducted by using the remote sensing inversion's temperature data. The study provided the new technological means for appraisal research on forest ecological service function. 2) has carried on the quantification analysis to forest attemperation's data at different time, based on statistical data, has obtained regularity of forest attemperation; (3) A contrastive analysis for similarities and differences between forest and farmland has been done in aspect on attemperation and climatic change.