| 重庆岩溶地区气候变化对植被的影响 |
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| 引用本文： | 王玲,刘海隆.重庆岩溶地区气候变化对植被的影响[J].气象与环境学报,2007,23(1):6-11. |
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| 作者姓名： | 王玲 刘海隆 |
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| 作者单位： | 1.石河子大学师范学院地理系 石河子832003;2.中国科学院新疆生态与地理研究所 乌鲁木齐810001 |
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| 基金项目： | 重庆市科委项目(6759)，石河子大学“263”青年骨干教师资助项目(SF02016)共同资助 |
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| 摘 要： | 岩溶生态系统是一种脆弱的生态系统,植被类型与盖度成为岩溶环境中最重要、最敏感的自然要素。介绍了以重庆岩溶地区为对象,利用气象和NDVI数据,采用相关分析等方法探讨了植被对气候变化的响应。结果表明:(1)在多年平均水平上,气候对重庆岩溶植被生态系统起着比降水大的作用;在植被生长的年际变化方面,气温和降水对植被生长起着大致相反的趋势。(2)年际变化方面,气温和降水对植被生态系统的生长起着大致相反的作用。一般来说,气温与NDVI之间的关系为正相关。(3)植被指数的动态变化受气候波动的影响较大,近20 a来,总体呈增加的趋势。可为岩溶生态系统恢复和重建提供科学依据。
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| 关 键 词： | 气候变化 归一化植被指数NDVI 岩溶区 |
| 收稿时间： | 2006-7-6 |
| 修稿时间： | 2006-07-062006-11-13 |
Impacts of climate change on vegetation in Chongqing karst region |
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| WANG Ling,LIU Hailong.Impacts of climate change on vegetation in Chongqing karst region[J].Journal of Meteorology and Environment,2007,23(1):6-11. |
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| Authors: | WANG Ling LIU Hailong |
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| Institution: | 1.Geography Department of Teachers College;Shihezi University;Shihezi 832003;2.Xinjiang Institute of Ecology and Geography;Chinese Academy of Sciences;Xinjiang 830011 |
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| Abstract: | The vegetation types and coverage rates were the most important and sensitive natural factors because of the vulnerability in karst areas.Combining NDVI data with weather data,the impacts of climate change on vegetation in Chongqing karst region were discussed by mathematics statistical methods.As a result:(1) Either in multi-year average or multi-year season average,the NDVI responses to climate change showed that temperature was more important than precipitation.(2) In annual change of vegetation growing,the impacts of temperature and precipitation on NDVI were converse.Commonly,there was a positive correlation between temperature and NDVI.(3) The dynamic change of vegetation index was greatly influenced by the climatic fluctuation.During recent 20 years,NDVI changes showed the increasing trends as a whole.All these could provide the scientific basis to the restoration and reconstruction of karst ecological system. |
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| Keywords: | Climatic Change Normalized difference vegetation index Karst region Chongqing |
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