In some parts of the county, terracing and crop changes have cut soil erosion by more than 40 percent, according to Piet van der Poel, with the EU project.
Piet van der Poel说,通过这一欧盟项目,该县部分地区采取梯田耕种和作物换种减少水土流失40%多。
To study the dynamic changes trend of Hepatitis A in Gaoling County of Shaanxi Province.
目的了解陕西省高陵县甲型病毒性肝炎动态变化趋势。
In the case of Jinyang county, this paper analyzed and textually researched its historical administrative changes, especially the variance of its around border.
县级行政建置与辖境大小的历史演变是沿革地理学研究的重点和难点之一。
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