Research Article
Research on the Relationship between Urban Agricultural Nonpoint Source Pollution and Rural Residents’ Income Growth
Table 1
Relationship between ANSP and per capita disposable income of rural residents.
| | Value of coefficients | Variable relationship |
| | β 1 > 0, β2 = 0, β3 = 0 | A simple increasing linear relationship | | β 1 < 0, β2 = 0, β3 = 0 | A simple decreasing linear relationship | | β 1<0, β2>0, β3 = 0 | A positive “U” curve relationship | | β 1 > 0, β2 < 0, β3 = 0 | An inverted “U” curve relationship | | β 1 > 0, β2<0, β3>0 | A positive “N” curve relationship | | β 1<0, β2>0, β3 < 0 | An inverted “N” curve relationship | | β 1 = 0, β2 = 0, β3 = 0 | No linear relationship |
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