中国东北黑土区土壤侵蚀环境

Condition of Soil Erosion in Phaeozem Region of Northeast China

分析了黑土腐殖质、黑土母质、黑土区气候、地貌、植被及人类开垦等活动与黑土侵蚀之间的关系,指出了黑土区农业开垦与耕作是导致黑土流失的主要原因,同时,在人类干预条件下,某些自然因素对黑土加速侵蚀的影响就会明显地凸现出来。实际上,黑土区独特的自然环境与人类活动方式已经使其成为目前中国土壤侵蚀潜在危险性最大的地区之一。目前,黑土流失速度相当快,不少地区已经出现了成土母质露于地表的现象,土壤侵蚀严重。如果我们现在还不能正确认识黑土地治理的紧迫性,黑土区很快就将变为名副其实的"不毛之地"了。

The relationships between the soil erosion of phaeozem in the northeast region of china and humus, soil parent material, climatic condition, land feature, vegetation and man′s activity in this area have been analyzed. It has been pointed out that the reclamation on a large scale in the phaeozem region is the primary reason causing soil erosion in this place, and at the same time, several natural factors that are the potential factors to affect soil erosion have played more significance role in accelerated erosion after human broke into the phaeozem region. In fact, the phaeozem region of northeast China has became the most hazard region of potential erosion now for it′s unique physical geography environment and man′s activity. At present, the phaeozem region is subjected to severely soil erosion and at somewhere the loess mother material is exposing to the air. So we must action now to explore the law of soil erosion and to cure the soil erosion using this law, or else, the phaeozem region of northeast China will became the real barren land.