Analyses of Black soil Erosion Present Situation in Black Soil Region of Heilongjiang Province
Black soil region in Northeast is one of three large black area in the world, Loose black soil, Rich in organic matter content, Is the most fertile fanning soil, The " king of the earth," said, Nature gives human beings unique treasures. Past two to three hundred years, With the irrational exploitation and utilization, Precious black soil, at an annual rate of erosion loss of 0. 3 ~ 1. 0cm. Currently black soil farmland cultivated black soil layer has been reduced to the initial average of 80 - 100cm to 20 ~ 30cm. In accordance with the existing rate and control the progress of erosion projections,40 to SO years will have been depleted of most of the black soil, On the regional ecological environment and sustainable development of socio-economic causes serious harm.
NETL
NSTL
万方数据
维普
