Regression of V<sub>c</sub>.
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Abstract
a<p>Residents in China are legally separated into urban and rural residents.</p>b<p>Severity of desertification.</p>c<p>Interaction of profession and severity of desertification.</p>d<p>Q<sub>1</sub>: Do you feel some improvement of the natural environment in your county relative to previous years? Q<sub>2</sub>: Which is the main reason in your opinion about the desertification in your county? <b><sup>e</sup></b> *, ** and *** indicate the significance at 10%, 5% and 1% level respectively.</p
