| 其他摘要 | Currently, there are a few studies focusing on Guizhou’s historical environments, especially for the evolution history of karst rocky desertification (KRD). This paper analyzed the evolution history of KRD in this province, from the perspectives of man-land relationship and its contradiction, geological backgrounds, etc..
It is concluded that, KRD in Guizhou Province, is possibly starting at the end of the Ming dynasty and earlier stage of the Qing dynasty, and extends in the middle of the Qing dynasty( around the year 1800),both in distribution range and severe degree; Continuously expanding in the Republic of China makes it an environmental issue. However, it is after the foundation of P.R.China, that it becoming a great eco-environmental threat to the socio-economic development of Guizhou province. The evolution of karst rocky desertification undergoes a long, quantitative to qualitative change process, from slight, regional to severe, provincial coverage.
The KRD roots in the increase of population which exceeds the carrying capacity of the land resources at a specific period and leading to the imbalance and aggravation of man-land relationship, and it is also closely related with historical changes of production mode and productivity. Meanwhile, those central administrations’ strategic orientation for the province also had impacts upon its eco-environments. Therefore, the fundamental ways for rehibilitation of KRD are to control population size and raise their quality, improve agricultural productivity and adjust industrial layouts and policies. Moreover, an ecological compensation system would possibly benefit the province greatly.
As to the rehabilitation of the desertification, it would be fundamental at a macroscopic level to coordinate the man-land relationship to promote the harmonious development of the province. Technically, the taming of the desertification need to carry out in a scientific way, which includes taking a progressive approach, following succession laws of ecological systems, etc.. As to the selecting of taming areas, it would be wise to give priority to the easy. Meanwhile, it is paramount to enforce the protection of those areas where taming measures have been taken, which would ensure those achievements not being destroyed. |
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