欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志

• 研究报告 • 上一篇    下一篇

山东省安丘市生态用地动态变化

张艳娇1,2,3,贾宝全1,2,3**,马明娟1,2,3,宋宜昊1,2,3,姜楠1,2,3   

  1. (1中国林业科学研究院林业研究所, 北京 100091; 2国家林业局林木培育重点实验室, 北京 100091; 3国家林业局城市森林研究中心, 北京 100091)
  • 出版日期:2014-07-10 发布日期:2014-07-10

Spatiotemporal variations of ecologically used land in Anqiu City, Shandong Province, China.

ZHANG Yan-jiao1,2,3, JIA Bao-quan1,2,3**, MA Ming-juan1,2,3, SONG Yi-hao1,2,3, JIANG Nan1,2,3   

  1. (1Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China; 2 Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Beijing 100091, China; 3Research Centre of Urban Forestry, State Forestry Administration, Beijing 100091, China)
  • Online:2014-07-10 Published:2014-07-10

摘要:

利用山东省安丘市4期土地利用数据,通过动态度、转移矩阵及不稳定斑块空间分析等方法,研究了该县域生态用地动态变化特征,以期对该地区新农村建设的可持续发展和生态环境保护提供决策参考。结果表明: 1995—2010年安丘市生态用地占市域面积比例由14.04%降低至13.31%,草地、水域减少,林地、未利用地增加,而非生态用地中建设用地持续增加、耕地持续减少。3个时段,不稳定斑块占研究区总面积比重较小,分别为1.39%、2.21%和3.13%;不稳定斑块中生态用地面积及斑块数量所占比例分别为31.09%、43.21%、20.52%和28.24%、34.06%、11.28%。生态用地空间稳定性相对较低,且有下降趋势。Moran指数表明,转入的生态用地呈聚集分布,转入的非生态用地呈离散或随机分布。生态用地与非生态用地的空间动态度持续增加,整体上生态用地朝着规模减小的方向发展,非生态用地朝着规模增大的方向发展。

 

关键词: 海拔分布上限, 气候响应, 滇西北高原, 树木年轮, 大果红杉

Abstract:

Land use data of Anqiu City of Shandong Province in 1995, 2000, 2005 and 2010 were used to analyze the dynamic changes of ecologically used land by a combined approach including dynamic degree, transition probability matrix, and spatial autocorrelation analysis. Our objective is to provide a decisionmaking reference for the sustainable development and environmental protection during the construction of a new countryside of Anqiu City. The results indicated that the area ratio of ecologically used land decreased from 14.04% to 13.31% from 1995 to 2010 due to the decreased grassland and water areas and increased forest and unused land areas. In contrast, the construction land continuously increased and the farmland continuously decreased during this period. In the three periods, unstable patches had low area rates of 1.39%, 2.21% and 3.13%, respectively. The area and number ratios of ecologically used land of the unstable patches were relatively low, being 31.09%, 43.21%, 20.52% and 28.24%, 34.06%, 11.28%, respectively. The spatial stability of ecologically used land was relatively low and showed a downward trend. Moran index analysis indicated that the transition of other lands to ecologically used land was spatially clustered, while the transition to nonecologically used land dispersed or was at random. Overall, the ecologically used land moved in the direction of shrinking and the nonecologically used land in the direction of expanding.
 

Key words: Larix potaninii var macrocarpa, climatic response, Northwestern Yunnan Plateau, upper distributional limit, dendrochronology