水资源与水工程学报2017，Vol.28Issue(3)：42-47,54,7.DOI:10.11705/j.issn.1672-643X.2017.03.09
塔里木河中游人工与天然绿洲相互转化过程与适宜比例探讨
Artificial and natural oasis mutual converting process and the proper ration in the middle reaches of Tarim River basin
摘要
Abstract
Based on the Landsat TM/ETM remote sensing images of the middle reaches of Tarim-river basin, using RS/GIS technologies, the land use/cover type information in 1990, 2000 and 2010 was extracted in this paper, the changing rule and the area ratio of the artificial and the natural oases was analyzed, and the suitable area ratio of the artificial and natural oasis was discussed.The results showed that: From 1990 to 2010, artificial oasis expanded continuously, natural oasis area in the middle reaches of Tarim River basin shrank, artificial oasis area increased 2296.69 km2, and natural oasis area decreased 2221.5 km2, the expansion speed was 114.83 km2/a and the decreasing speed was 111.08 km2/a.From 1990 to 2010, there was a trend of natural oasis replaced by artificial oasis, grassland and forest land transformed to arable land, The vegetation growing declined: high covered grass transferred to middle and low covered grassland, middle covered grass changed to low covered grassland, shrub land gradually degraded to grassland, and low covered grassland changed to desert.The artificial and natural oasis area ratio increased in recent 20 years, in 1990, 2000, 1990, artificial and natural oasis area ratiowere 1∶39.7,1∶17.4 and 1∶9.8 respectively.When there was increase of 1 artificial oasis area 1.7 natural oasis area would lose.关键词
人工绿洲/天然绿洲/转化过程/适宜比例/塔里木河中游Key words
artificial oasis/natural oasis/transformation process/suitable proportion/middle reaches of Tarim River basin分类
资源环境引用本文复制引用
陈超群,吴煜,王健,赵新风,赵乐..塔里木河中游人工与天然绿洲相互转化过程与适宜比例探讨[J].水资源与水工程学报,2017,28(3):42-47,54,7.基金项目
国家自然科学基金项目(31400466) （31400466）
水利部公益性行业科研专项经费项目(201501060) （201501060）
