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甲烷(CH4)所引起的温室效应仅次于CO2,固体废弃物填埋处理所产生的CH4作为总的人为温室气体排放源的一部分,估算其排放量对于计算大气中整个温室气体增加所引起的气候效应具有重要的作用和意义。在以往研究的基础上,通过对典型城市生活垃圾的采样分析,确定了最近几年中国城市固体废弃物(MSW)中可降解有机碳(DOC)的含量,并根据IPCC计算CH4排放量的方法以及全国不同区域废弃物管理程度状况,估算得到CH4排放量在全国范围内从东部到西部逐渐减少,且在1994-2004年排放量逐年增加。 相似文献
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The preliminary analysis of climatic variation in China during the last 39 years has been made in this paper. The results show that although the global climate is getting warmer, some parts of China are cooling. The warming only occurs in Northeast, North and the west part of Northwest China while the areas between about 35°N and Nanling Mountain, east of the Tibetan Plateau in China are getting cooler. The cooling centers are located in Sichuan, the south part of Shaanxi and the north part of Yunnan respectively. According to the theory of greenhouse effect, there are much precipitation at low and high latitudes and less precipitation in middle latitude. However, the precipitation in the most parts of China has been decreased, especially in North and Northwest China. 相似文献
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