基于生态服务价值方法的区域生态格局划分——以重庆市沙坪坝区为例

The Plot of Regional Ecological Pattern Based on Ecological Service Value Method——a Case Study of Shapingba District in Chongqing

伴随经济的快速发展,追逐经济效益而忽略生态效益的土地利用越来越突出,区域土地系统的生态服务功能降低、所提供的产品与服务严重下降,影响了区域的可持续发展.研究以重庆市沙坪坝区为例,运用生态服务价值的方法,通过对1996-2006年沙坪坝区的土地利用中所诱发的生态效益量进行估算,结合区域经济发展,对未来区域生态状况趋势进行预测.结果表明:沙坪坝区在1996-2006年间的土地利用的生态服务价值由1 332.5×104$/hm2减少为1 214.05×104$/hm2,共减少了118.45×104$/hm2;各乡镇的生态服务价值贡献状况表现不一,有增有减;沙坪坝区未来生态状况主要表现为生态重建区(井口、覃家岗等镇)、生态控制区(土主、西永等镇)、生态保护区(中梁、歌乐山等镇)和生态敏感区(曾家、青木关等镇)4种趋势.

With the rapid development of economy, the problem of seeking economic benefits, regardless of ecological value in land use, became more and more serious, and the reduced ecological service value of the regional land system and the gravely declined supplied products and services influenced the regional sustainable development. Taking Shapingba District in Chongqing as an example and using the ecolog ice value method, this paper estimated the quantity of ecological benefit induced in land use in S District from 1996 to 2006. Taking into consideration the local economic development, this paper ical servbapingba predicted the future regional ecological condition. The results indicated that from 1996 to 2006, the ecological service value of this district in land use dropped from $1 332.5×10^4/ha to $1 214.05×10^4/ha, a decline by $118.45 × 10^4/ha; the conditions of the contribution of ecological service value varied with different towns. Four different trends in development were identified, i.e. ecological rebuilding area （Jingkou town, Qinjiagang town, etc. ）, ecological controlling area （Tuzhu town, Xiyong town, etc. ）, ecological protecting area （Zhongliang town, Geleshan town, etc. ） and ecologically sensitive area （Zengjia town, Qingmuguan town, etc. ）.