[1]陈 安,李景吉,黎文婷,等.2001—2018年雅砻江流域植被NDVI时空动态及其对气候变化的响应[J].水土保持研究,2022,29(01):169-175+183.
　CHEN An,LI Jingji,LI Wenting,et al.Spatiotemporal of NDVI in the Yalong River Basin from 2001 to 2018 and Its Response to Climate Change[J].Research of Soil and Water Conservation,2022,29(01):169-175+183.
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2001—2018年雅砻江流域植被NDVI时空动态及其对气候变化的响应

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 29 期数: 2022年01期 页码: 169-175+183 栏目: 出版日期: 2022-02-20
Title:
Spatiotemporal of NDVI in the Yalong River Basin from 2001 to 2018 and Its Response to Climate Change
文章编号:
1005-3409(2022)01-0169-07
作者:
陈 安1, 李景吉1,2, 黎文婷1, 刘延国3, 王 娜4
(1.成都理工大学 生态环境学院, 成都 610059; 2.地质灾害防治与地质环境保护国家重点实验室(成都理工大学), 成都 610059; 3.西南科技大学 环境与资源学院, 四川 绵阳 621010; 4.成都理工大学 地球科学学院, 成都 610059)
Author(s):
CHEN An1, LI Jingji1,2, LI Wenting1, LIU Yanguo3, WANG Na4
(1.College of Environment and Ecology, Chengdu University of Technology, Chengdu, Sichuan 610059, China; 2.State Key Laboratory of Geohazard Preventionand Geoenvironment Protection Chengdu Universityof Technology, Chengdu 610059, China; 3.Southwest University, Mianyang, Sichuan 621010, China; 4.College of Earth Science, Chengdu University of Technology, Chengdu 610059, China)
关键词:
NDVI;  偏相关分析;  雅砻江流域
Keywords:
NDVI;  partial correlation analysis;  Yalong River Basin
分类号:
Q948.12
文献标志码:
A
摘要:
为了了解雅砻江流域植被覆盖变化及其对气候的响应,基于MOD13Q1和气象数据,采用趋势分析和偏相关分析等方法,分析了2001—2018年雅砻江流域生长季NDVI的时空变化特征,探讨了NDVI变化对气候因子的响应。结果表明:(1)2001—2018年雅砻江流域NDVI均值为0.66,呈东南向西北逐渐下降趋势,并随海拔的升高呈先增后减趋势;(2)2001—2018年雅砻江流域NDVI整体以0.003/10 a的速率波动上升,NDVI增加面积(63.97%)大于减少面积(36.03%); 2001—2018年雅砻江流域生长季的气温上升趋势显著,降水上升趋势不明显,流域上、中游气候向暖湿方向发展;(3)整体上NDVI受气温影响大于降水,与气温呈正相关关系,与降水呈负相关关系; 空间差异明显,上游受气温和降水共同影响,中、下游大部分地区受降水影响。整体而言,雅砻江流域被的生长受地形、气候和人类活动等因素影响,近18年植被NDVI改善面积持续增加。
Abstract:
In order to study the changes in vegetation cover in the Yalong River Basin and its influences on climate, based on the MOD13Q1 and meteorological data, the spatiotemporal distribution and changing trends of the NDVI in the Yalong River Basin in the growing season druing the period from 2001 to 2018 were analyzed by trend analysis and partial correlation analysis methods, and the response of NDVI variations to climate factors was also explored. The results indicated that:(1)from 2001 to 2018, the mean value of NDVI in the Yalong River Basin was 0.66, showing a trend of gradual decrease from southeastern to northwestern; In vertical distribution, the mean value of NDVI firstly increased and then decreased with the increasing of elevation;(2)in nearly 18 years, the NDVI increased at the rate of 0.003/decade in the Yalong River Basin; The area(63.97%)with increase of NDVI was greater than area(36.03%)with decrease of UDVI; from 2001 to 2018, the air temperature in the Yalong River Basin showed an upward trend and no significant trend of precipitation was observed; the climate of upper and middle streams presented the warmized and humidized developing orientation;(3)on the whole, NDVI was more affected by temperature than precipitation; temperature was positively correlated with NDVI, and precipitation was negatively correlated with NDVI. There were spatial differences in the response of NDVI to climate; the upper stream of the Yalong River Basin was affected by both temperature and precipitation, and most of the middle and lower stream was affected by precipitation. In general, vegetation growth in the Yalong River Basin was controlled by climate, topography and human activities, the improved areas of NDVI continued to increase in nearly 18 years.

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备注/Memo

收稿日期:2020-12-22 修回日期:2021-01-19
资助项目:国家重点研发项目“第二次青藏高原综合科学考察研究”(2019QZKK0307)
第一作者:陈安(1995—),男,河北省沧州市人,硕士研究生,主要从事生态环境监测与评价。E-mail:350583076@qq.com
通信作者:李景吉(1983—),男,江苏省徐州市人,讲师,博士,主要从事植物多样性与生态保护研究。E-mail:lijingji2014@cdut.edu.cn

更新日期/Last Update: 2022-02-20