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奈曼旗的地貌学调查表明:在全新世早期,位于北纬43°的现今科尔沁沙地一带广泛分布着永冻层,这种地层阻止了雨水和融化的雪水向地下渗透,当时每年能融化的地表层深度为1.5米,而且这一层上面覆盖着草原植物。新石器时代这里便有了农业活动,但在距今5000年前后农业衰落了。考古发现表明:从那时起,流动性不断增大的游牧经济开始取代了这里的农业生产方式。有资料反映,伴随着永冻层融化的同时出现了失水过程和草原向沙漠的转化,至此,这时原生态环境发生了决定性的变化。由于对大部分植被的破坏和用石铲耕地使表层土松软,人类干扰了自然生态系统,结果加速了失水过程。这一地区具有高度敏感的生态系统,它与具有深层黄土堆积的黄河流域不同,对气候变化和人类广泛的机械性扰动对地表土的破坏反应更灵敏,由此便导致了接着而来的新石器时代第一个发达文明的衰落。从此以后,一种恢复与沙漠化的过程便经常在这里周期性地发生。
Geomorphological surveys of Naiman Banner show that in the early Holocene, permafrost was widely distributed in the present-day Horqin Sandy Land, 43 ° north latitude. This formation prevented rainwater and thawed snow water from penetrating into the ground, melting each year The depth of the surface layer is 1.5 meters, and this layer is covered with grassland plants. There was agricultural activity here in the Neolithic period, but agriculture declined about 5,000 years ago. Archaeological discoveries show that since then, the growing mobility of the nomadic economy has begun to replace the mode of agricultural production here. Data show that along with the melting of permafrost at the same time there has been a water loss process and grassland conversion to the desert, so far, when the original ecological environment has undergone a decisive change. As a result of the destruction of most of the vegetation and the softening of the topsoil with the stone shovel, mankind interfered with the natural ecosystem and as a result accelerated the loss of water. This highly ecologically sensitive ecosystem, unlike the Yellow River basin with deep loess heap, responds more sensitively to the destructive effects of climate change and widespread human disturbance on the surface soil, resulting in the ensuing new The decline of the first well-developed civilization in the Stone Age. Since then, a process of restoration and desertification has frequently occurred here periodically.