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丁文荣, 李玉辉.岩溶区植被覆盖变化与气候波动的相关性——以云南石林为例水资源与水工程学报[J].,2019,30(5):40-45
岩溶区植被覆盖变化与气候波动的相关性——以云南石林为例
The correlation between vegetation cover change and climate fluctuation of karst area: A case study in Shilin County, Yunnan Province
  
DOI:10.11705/j.issn.1672-643X.2019.05.07
中文关键词:  岩溶区  植被覆盖  气候波动  相关性  云南石林
英文关键词:karst area  vegetation cover  climate change  correlation  Shilin County of Yunnan Province
基金项目:国家自然科学基金项目 (41761105)
作者单位
丁文荣, 李玉辉 (云南师范大学 旅游与地理科学学院 云南 昆明 650500) 
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中文摘要:
      应对气候变化与植被恢复是岩溶区亟需解决的现实问题。以云南石林岩溶区为对象,采用1987-2017年的长序列植被指数和气象站点数据,融合Sen's斜率分析、Morlet小波分析、偏相关分析与Mann-Kendall非参数检测等手段,从时间序列变化的匹配性视角研究岩溶区植被覆盖变化与气候因子波动的相关性。结果表明:研究时段内4种植被类型呈现出减少趋势,均存在约21、11和6a的时间周期,常绿阔叶林、针阔混交林和针叶林的突变年份发生在2009年,而石漠化灌草丛发生于2004年;植被NDVI与降水量间呈现为正相关关系,与气温呈现为负相关关系,1987-2017年植被NDVI的趋势性变化、周期性变化是降水韵律所控制,阔叶林、针阔混交林和针叶林3种植被类型的突变由降水量的突变引起,而石漠化灌草丛的突变则由气温的突变引起;石漠化灌草丛较其他植被类型稳定性最差,常绿阔叶林、针阔混交林和针叶林在气候变化的背景下较石漠化灌草丛更稳定,应对气候变化的能力更强。本研究成果可以为我国南方岩溶区植被恢复与保护提供科学依据。
英文摘要:
      Facing the climate change and restoring vegetation is an urgent problem in the karst area. Based on the long-sequence vegetation index and meteorological data from 1987 to 2017 in the karst area in Shilin County, Yunnan Province, the relationship between different vegetation types and climatic and environmental factors was studied by means of Sen's slope analysis, Morlet wavelet analysis, partial correlation analysis and Mann-Kendall non-parametric detection. The results showed that: The four vegetation types showed a decreasing trend during the study period, and there were time periods of about 21, 11 and 6 years, and the mutation years of evergreen broad-leaved forest, coniferous and broad-leaved mixed forest and coniferous forest occurred in 2009, and the rocky desertification shrubs occurred in 2004. There was a positive correlation between vegetation NDVI and precipitation, and a negative correlation with temperature. The cyclical changes are controlled by the rhythm of precipitation, and the mutations of the three vegetation types of broad-leaved forest, coniferous and broad-leaved mixed forest and coniferous forest are caused by the mutation of precipitation, while the mutation of rocky desertification shrub is caused by the abrupt change of temperature. Rocky desertification shrubs have the worst stability compared with other vegetation types. Evergreen broad-leaved forests, coniferous and broad-leaved mixed forests and coniferous forests are more stable than rocky desertification shrubs in the context of climate change. This study can provide scientific basis for vegetation restoration and protection in karst areas of southern China.
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