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山东省沿海区域景观生态风险评价

吴莉1,2,侯西勇1**,邸向红1,2   

  1. 1中国科学院烟台海岸带研究所, 烟台 264003; 2中国科学院大学, 北京 100049)
  • 出版日期:2014-01-10 发布日期:2014-01-10

Assessment of regional ecological risk in coastal zone of Shandong Province. 

WU Li1,2, HOU Xi-yong1**, DI Xiang-hong1,2   

  1. (1Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, Shandong, China; 2University of Chinese Academy of Sciences,  Beijing 100049, China)
  • Online:2014-01-10 Published:2014-01-10

摘要:

以山东省沿海区域2000、2005、2010年景观格局数据以及Spatial-Markov模型模拟2020、2030年景观格局,基于景观结构指数计算5个时期的景观生态风险,分析景观生态风险的时空特征,为生态风险管理决策提供科学依据。结果表明:2000—2010年,低生态风险小区面积比例不断下降,中生态风险小区面积比例持续上升,较高生态风险小区面积比例则波动上升,在目前趋势发展情景下,2020—2030年风险小区风险等级由低到高转化强度比2000—2010年加大,高生态风险小区比例快速上升,山东省沿海区域生态风险将总体加剧;山东省沿海区域生态风险表现为空间正相关,生态风险“热点区”主要包括滨州北部沿海、东营东部沿海、潍坊南部与烟台内部低山丘陵区、青岛沿海等区域;科学的生态风险管理应加强各地级市之间的合作,加大“热点区”管理力度,未来应推进区域土地利用方式调整,合理规划土地利用。
 

关键词: 土壤粒径分布, 土壤理化性质, 沙漠化, 荒漠草地, 土壤分形维数

Abstract: Base on land use maps in 2000, 2005 and 2010 of the coastal areas of Shandong Province and land use maps in 2020 and 2030 simulated by the Spatial-Markov model, ecological risk index was built based on landscape pattern indices. In specific, the study area was divided into 811 units with a size of 10 km×10 km. The ecological risk index in 811 units in 2000, 2005, 2010, 2020 and 2030 was calculated. Results showed that under current development scenario, areas converted from low to high ecological risk grade and from high to low ecological risk grade from 2020 to 2030 would be higher than those from 2000 to 2010. Area with high ecological risk would increase significantly in the future, i.e., ecological risk in coastal zones of Shandong Province would aggravate if the land use change trend in the past decade lasts in the future. The ecological risk showed significant positive spatial autocorrelation from 2000 to 2030. The “hot spot” areas of ecological risk were mainly distributed in the northern coastal area of Binzhou, the eastern coastal area of Dongying, the hilly area in the southern part of Weifang and Yantai, and coastal area of Qingdao. Some suggestions were put forward. Firstly, regional cooperation should be strengthened to prevent the ecological risk. Secondly, measures of risk management should be reinforced in “hot spot” areas where high ecological risk values cluster. Moreover, adjustments of regional land use patterns should be promoted, rationally planning land use in future.

Key words: desert grassland., soil physical and chemical characteristics, soil fractal dimension, soil particle size distribution (PSD), desertification