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[1]王一,郝利娜,赵美龄,等.2001—2018年重庆植被NDVI变化及其对气候因子和人类活动的响应[J].水土保持研究,2021,28(05):222-229.
　WANG Yi,HAO Lina,ZHAO Meiling,et al.Variation of Vegetation NDVI and Its Response to Climatic Factors and Human Activities in Chongqing from 2001 to 2018[J].Research of Soil and Water Conservation,2021,28(05):222-229.

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2001—2018年重庆植被NDVI变化及其对气候因子和人类活动的响应

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 28 期数: 2021年05期页码: 222-229 栏目: 出版日期: 2021-08-20

Title:: Variation of Vegetation NDVI and Its Response to Climatic Factors and Human Activities in Chongqing from 2001 to 2018

文章编号:: 1005-3409(2021)05-0222-08

作者:: 王一,郝利娜,赵美龄,许晓露,李晨辉; (成都理工大学地球科学学院,成都 610059)

Author(s):: WANG Yi,HAO Lina,ZHAO Meiling,XU Xiaolu,LI Chenhui; (College of Earth Science,Chengdu University of Technology,Chengdu 610059,China)

关键词:: NDVI; 气候因子; 人类活动; 定量分析; 重庆

Keywords:: NDVI; climatic factors; human activities; quantitative analysis; Chongqing

分类号:: Q948

文献标志码:: A

摘要:: 探究植被覆盖变化及其与气候因子、人类活动之间的关系有助于区域生态环境的有效管理。因此,以MOD13Q1数据和气象数据作为数据基础,研究了2001—2018年重庆植被NDVI的时空变化特征以及与气候因子之间的相关性,并结合基于偏导数的方法定量评价每个气候因子和人类活动对植被NDVI年际变化的贡献。结果表明:(1)2001—2018年重庆植被NDVI变化整体呈现上升趋势;(2)近18年来重庆植被覆盖和恢复状况较好,呈极显著增加、显著增加区域占总面积的85.15%,其植被大面积恢复显著与生态工程建设有关;(3)重庆植被NDVI与降水和气温的偏相关系数均以正相关为主,两类气候因子同时呈正相关的区域为重庆农作物主要种植区域;(4)重庆大部分地区植被均受到降水、气温的促进作用,NDVI平均年际变化率为0.006 1/a,气候因子和人类活动平均贡献分别为0.001 3/a,0.004 8/a,人类活动对植被覆盖变化的积极影响更为强烈,其封地育林、退耕还林等生态工程使重庆大面积植被得到显著改善,而人类活动的城市扩张又导致城市区域的植被退化。

Abstract:: Exploring the relationship between vegetation cover changes and climatic factors and human activities is useful for the effective management of regional ecological environment. Therefore,taking MOD13Q1 data and meteorological data as data base,we studied the spatial and temporal variation characteristics of vegetation NDVI and its correlation with climatic factors in Chongqing from 2001 to 2018,and quantitatively evaluated the contribution of each climatic factor and human activities to the inter-annual variation of vegetation NDVI with the method based on partial derivatives. The results show that:(1)the vegetation NDVI change in Chongqing from 2001 to 2018 shows the increasing trend as a whole;(2)in the past 18 years,the vegetation cover and restoration in Chongqing have been in good condition the region where the vegetation cover and restoration significantly increased or extremely significantly increased accounts for 85.15% of the area; the vegetation restoration in large area is related to ecological engineering;(3)the partial correlation coefficient between vegetation NDVI and precipitation and temperature in Chongqing is mainly positive correlation,and the main planting areas of crops in Chongqing are the regions where the two climatic factors are positively correlated;(4)the vegetation in most areas of Chongqing is promoted by precipitation and temperature,and the average inter-annual change rate of NDVI is 0.006 1/a,and the average contribution of climate factors and human activities is 0.001 3/a and 0.004 8/a,respectively. In general,human activities have a stronger positive impact on variation of vegetation coverage,and ecological engineering meausres such as afforestation and conversion of farmland to forests have significantly improved the vegetation in a large area of Chongqing,while the urban expansion induced by human activities has led to vegetation degradation in urban areas.

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备注/Memo

收稿日期:2020-10-24 修回日期:2020-11-15
资助项目:中国博士后科学基金特别资助项目“重大工程背景下黄土高原生态地质环境脆弱性评价”(2020T130074)
第一作者:王一(1997—),男,四川乐山人,硕士,主要研究方向为生态环境遥感。E-mail:1669639749@qq.com
通信作者:郝利娜(1982—),女,陕西渭南人,博士,副教授,主要从事3S技术及其应用研究。E-mail:hao_ln@qq.com

更新日期/Last Update: 2021-08-20