Discuss the "Southwest drought causes need scientific rationality"

Scientific view of Beijing News Southwest drought causes the new weekly "is in the southwest area of severe drought affects people's hearts, all about natural disasters from man-made leader also in testing the public's attitudes toward science and rational thought. More than a bit to "treat nature" and win respect of environmentalists will this historic rare big drought occurs, and the southwest region of overexploitation in recent years together — although the climate in the sector of authoritative experts never easy underground this conclusion. In fact, just look at the science of climate change and climate scientists from around the Southwest out of data, understand the origin of the southwestern drought, it is not difficult. At present, the more common conclusion that Tibetan plateau and strong thermal factors, last year the premature end of the rainy season, the indirect effects of the El Niño phenomenon, from the South to southwest of moisture and cold air low bias difficult to form help "moisture" rainfall, these are influence important cause of southwestern drought, many reasons concurred, directly led to the severe drought. Nevertheless, a well-known environmental volunteers or "modest" assertions, Southwest economic forest and the construction of hydropower and the severe drought has a strong correlation. Large-scale commercial building and on the forest felling and, of course, be on the region's ecology. But this does not indicate commercial building is drought inducement. This drought also affect ecological protection better in Southeast Asia. The above changes, the El Niño phenomenon in the rainy season and cold air tends to be more global-scale climate change as a result, also related to the growing global warming trends are closely related, but difficult to link directly to the local ecological changes in China. Similarly, hydropower and again became the scapegoat. "Southwest of hydropower station construction-start" and "upstream on the river water accumulation for downstream river dry" is probably one of the reasons, the drought has been media frequently referenced. To this argument in addition to the above linked to meteorological data, also forgot the southwest of hydropower in fact most of it in the planning, construction and even controversy, even if they mean a lot of objections claimed destructive, this destructive far from sufficient to constitute the influence of climatic conditions. In the Southwest drought in exposed other national policy makers aware of the problem, but some "Green Volunteers" intentionally ignored, that is present in the southwest of the general lack of comprehensive water conservancy measures, the direct result of the drought which cannot be rationally using limited water resources. In fact, in many water resources use fully developed countries, such as water resource utilization up to 90% in Norway, and do not see the disastrous weather water project on promoting force, on the contrary, well-managed water conservancy measures, but obviously the impact in alleviating drought (and dams cannot result in a large range of long periods of extreme weather events, they cannot directly alleviate drought but only through the regulation of water resources to mitigate their impact) and providing emergency resources, particularly in power has played a significant role. Although the drought in the South West has been put into production for electricity enterprises generally substantial reductions in electricity generation, but they still provide electricity for drought relief. If you do not have the power, the pressure of drought will be larger or smaller? some people may say, can take advantage of other energy-generated electricity. But in China to use couldn't afford the oil, gas and wind energy, solar energy, new energy enough mature, other energy sources is only coal. And scientific analysis of the causes of severe drought in precisely and carbon emissions increase due to global warming. In this sense can even say, hydropower is reduced rather than increased drought factors. Of course, on the low-carbon emissions and electricity energy in full effect, but also require more comprehensive ecological and economic aspects of the study, as causes of drought with Southwest. Only in this way, is the scientific attitude. □ Jia Hok Peng ("Science News" magazine editor-in-Chief, climate change reporting club founder)