A gravel driveway is generally the least expensive with an average price tag of $1,500. Most homeowners spend between $2,250 and $5,900 to install a gravel driveway. While asphalt and concrete are widely favored, gravel is popular for long driveways, usually found in rural areas. The si...
The precipitation has a significant promotion and restraint on vegetation restoration, affecting the cost-effectiveness of the Sloping Land Conversion Program directly. To explore the impact of precipitation on cost-effectiveness of the SLCP, this paper selected the panel data of Shaanxi Province from...