HU Xiao-long,LI Jin-rong,XUE Bo,et al.Analysis of Dynamic Change in Wetland Landscape in Agro-pastoral Ecotone—A Case Study of Duolun County, Inner Monglia[J].Research of Soil and Water Conservation,2013,20(01):116-120,125.
农牧交错区湿地景观动态变化分析——以内蒙古多伦县为例
- Title:
- Analysis of Dynamic Change in Wetland Landscape in Agro-pastoral Ecotone—A Case Study of Duolun County, Inner Monglia
- Keywords:
- wetland; dynamic change; agro-pastoral ecotone; Duolun County
- 分类号:
- TP931
- 摘要:
- 以典型农牧交错区多伦县三期具有代表性（1987年、2000年和2010年）的湿地遥感数据为基础，对多伦县湿地时空变化及其驱动力进行分析。结果表明：1987—2010年，湿地面积呈递减趋势，23 a共减少了13 504.63 hm2；其中1987—2000年，沼泽湿地变化率为-1.74%，河流水库湿地变化率为-0.12%。2000—2010年间，多伦县全县沼泽湿地变化率为-4.81%，河流水库湿地变化率为0.18%。湿地向非湿地转移，约90%以上是沼泽湿地向林地、草地和耕地转移，其中2000年之后的转移速率是1987—2000年转移速率的1.3倍。湿地内部转移，1987—2000年，表现为沼泽湿地净增加，2000—2010年表现为河流水库净增加。驱动力主成分分析结果显示，气候干热是湿地减少的主要自然因素，由人口数量增加引起的一系列连锁反应是导致湿地面积萎缩的人为原因。正确的政策引导对缓解人口、资源和环境之间的矛盾以及湿地保护都起到了积极作用。
- Abstract:
- Based on the remote sensing data of wetland in 1987, 2000 and 2010, the spatio-temperal change of wetland in Duolun County and its driving force were analyzed. The result showed that the wetland area increased from 1987 to 2010, and the total reduced area was 13 504.63 hm2. The transfer rates of swamp wetland and river-reservoir wetland form 1987 to 2000 were -1.74% and -0.12%, respectively. The transfer rates of swamp wetland and river-reservoir wetland from 2000 to 2010 were -4.81% and 0.18%, respectively. More than 90% of the wetland area was conversed to non-wetland including forestland, grassland and farmland. The transfer rate from 2000 to 2010 was 1.3 times of the rate from 1987 to 2000. Swamp wetland demonstrated the net increase from 1987 to 2000, and river-reservoir wetland presented the net increase from 2000 to 2010 in terms of the internal transfer. The result of principal component analysis of driving force showed that the main natural factors which made wetland decrease were dry and hot climate. Population growth and a series of chain reaction from it led to the decrease of wetland area. Meanwhile, proper policy guide can deal with the conflicts among population, resources and environment, and protect wetland.
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备注/Memo
收稿日期:2012-07-29;改回日期:2012-10-09。
基金项目:多伦县滦河源湿地动态演变机制及保护问题的研究（2010MS0608）
作者简介:胡小龙(1965-),男,内蒙古呼和浩特人,博士,副研究员,主要从事水土保持与荒漠化防治方面的研究。E-mail:hushihxl@yahoo.com.cn
通讯作者:李锦荣(1980-),男,内蒙古呼和浩特人,博士,主要从事荒漠化防治方面的研究。E-mail:lijinrong918@126.com