清代至民国甘青宁地区农牧经济消长与生态变迁

清代至民国时期甘青宁地区农牧交界带农耕和游牧民族因生存而争夺“草场和耕地资源”，此消彼涨的纷争和一些不适当的经济活动，一方面弱化了这里原本脆弱的生态环境，使人居自然环境质量下降，生态失衡加重。另一方面也引发了一系列社会矛盾，乃至武装冲突事件，成为社会不稳定的因素。

The Growth and Decline of Farming and Animal Husbandry Economy and the Ecological Transformation in the Areas of Gansu, Qinghai and Ningxia Region during the Qing Dynasty to the Republic of China

During the period from the Qing Dynasty to the Republic of China, farming cultivators and nomadic tribes living in the mixed areas of farming and stockbreeding around Gansu, Qinghai and Ningxia contended for meadow and cultivable lands for subsistence. These constant disputes as well as some inappropriate economic activities, on the one hand, weakened the originally fragile ecological environment, which reduced the quality of natural living conditions and deteriorated the ecological unbalance, and on the other hand, caused a series of social contradictions and even armed disputes, which became the unstable social elements.