The West Development Policy being implemented in China causes significant land use and land cover (LULC) changes in West China, of which the two most important types of LULC change are replacing farmland and re-greeni...The West Development Policy being implemented in China causes significant land use and land cover (LULC) changes in West China, of which the two most important types of LULC change are replacing farmland and re-greening the desertification land with forest or grass. This paper modifies the prevailing regional climate model (RCM) by updating its lower boundary conditions with the up-to-date satellite database of the Global Land Cover Characteristics Database (GLCCD) created by the United States Geological Survey and the University of Nebraska-Lincoln. The modified RCM is used to simulate the possible regional climate changes due to the LULC variations. The preliminary results can be summarized as that the two main types of LULC variation, replacing farmland and greening the desertification lands with forest or grass in west China, will affect the regional climate mostly in northwest and north China, where the surface temperature will decrease and the precipitation will increase. The regional climate adjustments in South, Southwest China and on the Tibet Plateau are uncertain.展开更多
The concept Virtual Forest(VF) is brought up in this paper, whose four basic properties is: the accuracy about the simulated forest, the visual expression of all forest information, to large area, containing the whole...The concept Virtual Forest(VF) is brought up in this paper, whose four basic properties is: the accuracy about the simulated forest, the visual expression of all forest information, to large area, containing the whole information of forest may. The VF of Shangganling Forestry Bureau is very well completed with the surport of Shangganling Forestry Bureau and Forestry Inventory and Planning Institute in Heilongjiang Province, which is the combination of advanced imagine process and GIS, on which the forest characteristics of Shangganling Forestry Bureau is analyzed.展开更多
基金This study was supported bythe National Key Basic Research Development Programgranted by the Ministry of Science and Technology ofChina (MSTC) with project number G1999043500. Itwas also partly supported by the Innovation Program ofthe Chinese
文摘The West Development Policy being implemented in China causes significant land use and land cover (LULC) changes in West China, of which the two most important types of LULC change are replacing farmland and re-greening the desertification land with forest or grass. This paper modifies the prevailing regional climate model (RCM) by updating its lower boundary conditions with the up-to-date satellite database of the Global Land Cover Characteristics Database (GLCCD) created by the United States Geological Survey and the University of Nebraska-Lincoln. The modified RCM is used to simulate the possible regional climate changes due to the LULC variations. The preliminary results can be summarized as that the two main types of LULC variation, replacing farmland and greening the desertification lands with forest or grass in west China, will affect the regional climate mostly in northwest and north China, where the surface temperature will decrease and the precipitation will increase. The regional climate adjustments in South, Southwest China and on the Tibet Plateau are uncertain.
文摘The concept Virtual Forest(VF) is brought up in this paper, whose four basic properties is: the accuracy about the simulated forest, the visual expression of all forest information, to large area, containing the whole information of forest may. The VF of Shangganling Forestry Bureau is very well completed with the surport of Shangganling Forestry Bureau and Forestry Inventory and Planning Institute in Heilongjiang Province, which is the combination of advanced imagine process and GIS, on which the forest characteristics of Shangganling Forestry Bureau is analyzed.
