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Karst rocky desertification in southwestern China

 

In China, karst rocky desertification, is one of the major types of land desertification and resulted from the comprehensive action due to the overprint of irrational anthropological activities on the karst fragile eco-geo-environment backgroundwith the fragile eco-geo-environment as its development basefrequent anthropological activity as its driving forces, degeneration of land productivity as its essenceappearance of desert-like landscape as its mark

 

As the most serious eco-geologically environmental problem daily expanding karst rocky desertification is engorging living space and becomes the root of disaster and poverty in southwest China; it is especially true for Guizhou Province, which lies in the center of karst areas in the southwest. Karst rocky desertification, drought and water deficiency are the main environmental problems in karst areas in southwestern China.

 

The fragile ecologic environment in southwestern China was formed through long-time geological evolution and has obvious constraints on karst rocky desertificationTectonic movements created a steep and ruptured special karst geomorphological frame-workproviding potential energy as driving forces for soil erosionThe evolution of palaeo-environment laid down widespread material basis of carbonate rocks for karst rocky desertificationPopulation pressure and irrational anthropological activities in the karst areas led to the serious degeneration of land resourcesthe drastic decrease of vegetation coveragethe deterioration of water loss and soil erosion and the serious deterioration of the ecological environmentMoreoverthe overloaded social and economic pressure is the most important driving force for karst rocky desertificationAlthough the comprehensive taming of karst rock desertification is a hard net to crackit is possible to restore or rehabilitate the eco-environment in karst rocky desertification-afflicted areas

Following pictures may provide you a vivid impression.

A typitical karst basin (polje) in karst regions in Guizhou Province



 Were there no soil, trees have to grow on stones, crevice, or even in water.







Rock is no more hard, when water continue for thousands of years.



When soil is scarce in karst regions,  even trees are not living a easy life.



Corns grown on steep slopes, may causing soil losing after years.










Water deficiency is  common  in karst regions, but it is not the case undergrond.



Something must to be done to solve the problem.



Landcape in autumn in karst regions



A strong contrast of vegetation.





Karst rocky desertification around Guizhou Province.





















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