通过小区采样并进行了机械组成和化学分析，认为侵蚀过程导致的土壤颗粒坡面分布变化点在0 。
The results of physical and chemical analysis of soil samples showed that the diameter changing point of soil particles caused by soil erosion is about 0.
因此，如果在某个地区内只在某单块抽样小区内采样，那末就可能得到某种较为含糊的结果。
Thus setting up a single sample plot in an area can produce some rather bewildering result.
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