The Research Progress of Agricultural Non-Point Source Pollution in the Black Soil Area of Northeast China

Abstract

A large area of agricultural non-point source pollution which was caused by higher input of fertilizer and pesticide, lower availability of fertilizer, soil erosion and serious destruction of ecological balance in black soil region of northeast China has attracted the national attention and raised the relevant scholars’concern. This paper mainly summarizes the research on mechanism exploration, quantitative of pollution load and model simulation and controlling measure of the black earth region of northeast conducted by domestic scholars, which based on the instruction of general situation of agricultural non-point source pollution in black soil region of northeast China, and then put forward the shortcomings in the present study and direction of future development.

Effects of different agronomic practices on the selective soil properties and nitrogen leaching of black soil in Northeast China

“…In recent years, the leaching loss of soil nitrogen in cultivated land has become one of the major contributors to water pollution in many areas of China 8 , and the nitrogen pollution in water is closely related to land-use patterns and irregular events such as rainfall and soil disturbance; moreover, the leaching loss of soil nitrogen is difficult to control effectively 9 – 12 . Currently, the risk of nonpoint source pollution in the black soil region of Northeast China is increasing because the loss of nitrogen in black soil increased by 92% during 20 years 1 , 13 , 14 . Consequently, effective measures should be taken to control soil nitrogen leaching under the premise of maintaining the soil fertility of the black soil area in Northeast China 15 .…”