【摘要】 黑土是我国宝贵的土壤资源,近几十年来,黑土侵蚀退化严重,已成为制约国民经济发展的瓶颈。东北黑土侵蚀面积为240.87万hm2,占全区黑土总面积的36.7%,侵蚀类型主要有水蚀和风蚀两大类。导致黑土侵蚀的自然原因在于黑土地带的地形、气候及土体物理性状的组合特征,而过度垦殖、土地用养失调、不合理的耕作等人为因素则是引起黑土侵蚀的诱发因素。合理的土地利用方式是治理黑土侵蚀的关键。更多还原

【Abstract】 Black earth is our country invaluable soil resource, in near these decades, the northeastern black earth has eroded seriously, that have become handicap to the development of national economy. The erosion area was 7432.6 thousand hm2 that accounted for 36.7 % of the whole land of the area. The types of erosion have two classes of water erosion and wind erosion mainly. The natural reason lied in the association characteristics of dark earth belt’s terrain, climate and soil body. While human factors is the tempt reason, as excessive cultivation, the imbalance of using and protection and unreasonable cultivation etc. The rational land utilizes is the key to controlling the black earth to erode.更多还原