Showing posts with label Climate change. Show all posts
Showing posts with label Climate change. Show all posts

Tuesday, October 4, 2011

CLIMATE CHANGE: CHINA PERSPECTIVE

Snowfall, China
Heavy Snowfall in China
China is one of the developing countries most vulnerable to the adverse effects of climate change as it becomes the biggest CO2 emitter after the United States. As a developing country with a large population, a relatively low level of economic development, the Government of China are paying more attention to the change of the economic growth pattern and restructuring of economy. In 2007, this expanding economy generated 6028 Mt CO2 which contribute one-fifth of the world total and exceeding the United States for the first time. In China, per capita CO2 emissions rose by 80% which was 2.54 to 4.57 tonnes from 1998 to 2007. Yet China, as a developing nation, is not bound to limit its green house gas emissions under the Kyoto Protocol but its population and environment are likely to suffer more the effects of extreme weather events made more frequent by climate change. Rising temperatures and changing rainfall pattern will affect mainly in the fields of agriculture, livestock breeding, forestry, natural ecosystems, water resources, and coastal zones. To combat changing climate, Chinese government is now adopting measures to diversify its sources of energy and to increase energy efficiency, which could slow the sharp rise of its emissions. Also as a developing country of responsibility, China is among the first to formulate a national Agenda 21 entitled China’s Agenda 21 - White Paper on China's Population, Environment and Development in the 21st Century, soon after the United Nations Conference on Environment and Development in 1992, and adopted a series of policies and measures taking into account its specific national circumstances, making positive contribution to the mitigation of climate change. At present, China actively participates in worldwide efforts to address climate change, earnestly observes the United Nations Framework Convention on Climate Change (UNFCCC) and the Kyoto Protocol, and plays a constructive role in international cooperation in this regard.

Monday, October 3, 2011

CLIMATE CHANGE: BANGLADESH PERSPECTIVE

Climate change, Sea level rise, Bangladesh
Coastal Belt
The main victim of the unfavorable consequences of accumulation of green house gases is the developing countries of the world as per they have narrow scope to tackle with the natural disasters. Low economic countries such as Bangladesh are four times more victims by different disasters than high income countries. After 1990s, there were three storms, four floods, one tsunami and two cyclones killed more than 400,000 people, and indirectly affected another 42 million people, damage to coastal infrastructure estimated as much as 12% of GDP by the year 2010. According to IPCC (Intergovernmental Panel on Climate Change) prediction, about 20 cm sea level may rise within year 2030, and end of this century it will be more than 1 m. Sea level rise will inundate coastal areas about 2.29 million hectares which is about 15.8% of the total land of Bangladesh. Net-cropped area about 13.74% and about 401,600 hectares mangrove forests will be lost from map of Bangladesh. Recently, a large number of native tree species such as Arthocarpus chaplasha, Cassia fistula, Michelia champaca etc. become in endangered and extinct conditions due to change their favorable site conditions in hill forests. From different research findings, it predicted that natural and mangrove forests of Bangladesh may lose its native economically valuable species in near future due to temperature become high and low precipitation during the year. Only forests react sensitively to climate change; and measures to protect, restore and sustainably management can offer climate change mitigation potential.

Wednesday, September 28, 2011

FOREST FIRE AND CHANGING CLIMATE

Climate change, Fire
Forest fire in China
China is a country with serious forest fires, large burnt forest areas and tremendous fire losses. Forest fires have been long frequenting overall China and from 1950 to 2000, recurrent disturbance events considered in Sanming City, Fujian Province due to its regular distribution throughout the whole year. It affects the replacement of forest plants, site conditions, lowers the forest protection on water and soils, losing its function of conserving water sources, and regulating soil temperature. More combustible species such as Cunninghamia lanceolata and Pinus massoniana those comprise 76% of the total area also increasing challenge to the ecological health of the Sanming forests. Recently due to climate change of China, structure and composition of Sanming forest ecosystem are affected by dry and warm weather. Changing weather parameters such as rising temperature, high wind speed, low precipitation and humidity makes the forest environment unfavuorable for native plant and animal species. The ecosystem of the Sanming forest are severely disturbed by these causes, and it is somehow difficult to keep the ecosystem intact without applying sound ecological principle. So, the ability to predict and understand forest fire occurrences in Sanming is essential to implement necessary measures to mitigate these impacts.