土地利用的生态经济全息协调优化研究.PDF

2009 7 17 4 Chinese Journal of Eco-Agriculture, July 2009, 17(4): 776−781 DOI: 10. 3724/SP.J.1011.2009.00776 −* ——以宁夏固原县为例 王利文 ( 165000) 运用全息协调的理论和方法, 以黄土丘陵区宁夏固原县为例, 选择粮食总产、输沙模数为目标因子, 土地利用结构、降水量、积温为结构因子, 利用 1949~2003 年的生态经济数据, 对土地利用系统进行了生态− 经济优化。结果表明：牧草地对粮食产量和水保效益起显著作用, 土地利用系统优化可实现粮食总产增加和 输沙模数下降的“双赢”。全息协调分析表明, 粮食总产的最大值为 18.92 万t ·a−1, 最小输沙模数为 1 052.9 t ·km−2 ·a−1；目标因子相等权重条件下的土地优化利用调整方案是：在2003 年基础上, 将25°全部和 10°~ 25° 部分坡耕地共计3.07 万hm2 退耕还林(草), 输沙模数将由6 000 t ·km−2 ·a−1 降至2 000 t ·km−2 ·a−1, 粮食自 给率能维持在70%左右。 土地利用 全息协调理论 结构优化 退耕还林(草) 生态经济 : S181; F323.1 : A : 1671-3990(2009)04-0776-06 Ecological-economic optimization of land-use structure with the theory of Collected Information Complex Concert Control —A case study of Guyuan County of Ningxia Hui Autonomous Region WANG Li-Wen (Daxing’anling Vocational College, Jiagedaqi 165000, China) Abstract The theory and approachs of Collected Information Complex Concert Control (CICCC) are used to ecologically and economically optimize the land-use systems based on a case study of Guyuan County, Ningxia Hui Autonomous Region, a loess hill area. Gross grain output and sediment transport module are designed as the objective factors while land-use structure, precipitation and cumulative temperature as structural factors and ecological and economic data ranging from 1949 to 2003 are used. The result is that the grasslands are especially important to the gros