欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (4): 228-236.doi: 10.11924/j.issn.1000-6850.2014-2461

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

博斯腾湖流域植被覆盖变化及驱动因素分析

王 涛1,陶 辉2,雷 刚1,郝宁燕1,   

  1. (1西安科技大学测绘科学与技术学院,西安 710054；2中国科学院南京地理与湖泊研究所/湖泊与环境国家重点实验室,南京 210008）
  • 收稿日期:2014-09-11 修回日期:2015-01-30 接受日期:2014-12-24 出版日期:2015-03-20 发布日期:2015-03-20
  • 通讯作者: 王涛
  • 基金资助:
    国家自然科学基金项目“气候变化与人类活动对博斯腾湖流域水资源影响研究”(41101023)；西安科技大学博士启动基金项目“气候变化和人类活动影响下土地利用变化环境效应与模拟研究”(2012QDJ029)。

Analysis of Vegetation Cover Changes and Its Driving Forces in Bosten Lake Basin

Wang Tao1, Tao Hui2, Lei Gang1, Hao Ningyan1   

  1. (1College of Geomatics, Xi’an University of Science and Technology, Xi’an 710054;2State Key Laboratory of Lake Science and Environment/Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008)
  • Received:2014-09-11 Revised:2015-01-30 Accepted:2014-12-24 Online:2015-03-20 Published:2015-03-20

摘要： 植被覆盖变化对于气候变化背景下的区域生态水文响应研究具有重要现实意义。利用博斯腾湖流域2001—2013年16天合成MODIS NDVI影像及30 m分辨率ASTER DEM数据，对博斯腾湖流域植被NDVI时空变化及驱动因素分析。结果表明：（1）博斯腾湖流域植被生长季开始于4月下旬，结束于10月下旬。2001—2013年植被生长季内流域植被NDVI呈不显著的减少趋势，且891~1500 m、3501~4000和4001~4808 m范围呈增加趋势，1501~3500 m范围植被NDVI呈减少趋势。（2）博斯腾湖流域2001—2013年植被NDVI以减少趋势为主，占流域面积的61.80%，呈增加趋势的区域占流域面积36.60%。增加区域主要分布在流域东南部焉耆盆地、博斯腾湖的东南侧与西北侧，以及流域西北部的中部部分区域，其他为减少趋势分布区域。增加区域分布在891~2000和3501~4808 m范围，其他高程范围呈减少趋势。（3）博斯腾湖流域植被覆盖变化受到气候变化与人类活动的双重影响，但高海拔区域植被覆盖变化主要与气候变化有关，而低海拔区域植被覆盖变化受人类活动影响居多。

关键词: 转基因克隆, 转基因克隆

Abstract: Bosten Lake is located in the northwest arid region, which is the largest inland freshwater lake in China and sensitive to global climate change. The study on vegetation cover change and its driving forces in Bosten Lake Basin would have great significance to understand response of regional vegetation cover change to global climate change and water resources assessment. Vegetation cover change and its driving forces under the condition of global climate change were analyzed by MODIS NDVI images of 16 days synthetic from 2001 to 2013, DEM data with 30 m resolution. The results showed that: (1) vegetation growing season began in late April and ends in late October in Bosten Lake Basin, in the vegetation growing season, vegetation NDVI showed no significant decreasing trend, in different elevation ranges, increasing trends showed in the range of 891 m to 1500 m and of 3501 m to 4808 m, while decreasing trend showed in the range of 1501 m to 3500 m; (2) vegetation NDVI showed decreasing trend from 2001 to 2013 in Bosten Lake, which accounted for 61.80% while increasing trend accounted for 36.60%, the region of increasing trend mainly distributed in the southeast of basin, southeast and northwest of Bosten Lake, as well as the central part of basin’s northwest area, other regions showed decreasing trend, furthermore, increasing trend distributed in the range of 891 m to 2000 m and of 3501-4808 m, other range showed decreasing trend; (3) both climate change and human activities influenced vegetation changes in Bosten Lake Basin, however, the higher altitude area was mainly influenced by climate change while the lower by human activities.