陕北黄土高原土地利用/土地覆被变化中植被固碳释氧功能价值变化

Economic value of vegetation carbon fixation and oxygen release in Loess Plateau of North Shaanxi Province under land-use and land-cover change

利用陕北黄土高原的土地利用、气象等数据,测算了该区土地利用土地覆被变化(LUCC)引起的植被固碳释氧服务功能价值的变化,结果表明:1996年区域固碳释氧功能价值比1986年增加了9.97718亿元,2001年固碳释氧功能价值比1986年增加了13.61481亿元。这种价值变化反映出实施退耕还林还草政策以及合理控制城镇建设用地的扩张对提高陕北黄土高原生态服务功能有着十分重要的意义。

By using land-use and meteorological data, estimation was made on the economic value of vegetation carbon fixation and oxygen release in the Loess Plateau of North Shaanxi under land-use and land-cover change. Compared with that in 1986, this economic value in 1996 and 2001 was increased by 9.97718 × 10^8 yuan and 1. 361481 × 10^9 yuan, respectively. The policies of returning farmland to forest and grassland and of reasonably controlling the increase of urbanization area were of significance in improving the ecological functions of the Loess Plateau in North Shaanxi Province.