干旱对内蒙古植被生长的累积与滞后影响评估研究

doi:10.11733/j.issn.1007-0435.2021.06.021

草地学报 ›› 2021, Vol. 29 ›› Issue (6): 1301-1310.DOI: 10.11733/j.issn.1007-0435.2021.06.021

干旱对内蒙古植被生长的累积与滞后影响评估研究

顾锡羚^1,2, 郭恩亮^1,2,4, 银山^1,3, 王永芳^1,2, 那仁满都拉^1,2, 万志强¹

1. 内蒙古师范大学地理科学学院, 内蒙古呼和浩特 010022;
2. 内蒙古自治区蒙古高原灾害与生态安全重点实验室, 内蒙古呼和浩特 010022;
3. 内蒙古自治区遥感与地理信息系统重点实验室, 内蒙古呼和浩特 010022;
4. 中国气象局兰州干旱气象研究所, 甘肃兰州 730070

收稿日期:2021-01-04 修回日期:2021-04-12 出版日期:2021-06-15 发布日期:2021-07-05
通讯作者: 郭恩亮,E-mail:guoel1988@imnu.edu.cn
作者简介:顾锡羚(1998-)，女，内蒙古呼和浩特人，硕士研究生，主要从事土地覆被与植被遥感监测研究，E-mail：guxiling98@163.com
基金资助:
内蒙古自然科学基金联合项目（2020LH04003）；中国气象局干旱气象科学研究基金项目（IAM201904）；国家自然科学基金青年项目（41807507）；内蒙古自治区科技计划项目（2020GG0047）共同资助

Assessment of the Cumulative and Lagging Effects of Drought on Vegetation Growth in Inner Mongolia

GU Xi-ling^1,2, GUO En-liang^1,2,4, YIN Shan^1,3, WANG Yong-fang^1,2, NA Ren-mandula^1,2, WAN Zhi-qiang¹

1. College of Geographic Science, Inner Mongolia Normal University, Hohhot, Inner Mongolia 010022, China;
2. Inner Mongolia Key Laboratory of Disaster and Ecological Security on the Mongolia Plateau, Hohhot, Inner Mongolia 010022, China;
3. Inner Mongoila Key Laboratory of Remote Sensing and Geographic Information Systems, Hohhot, Inner Mongolia 010022, China;
4. Lanzhou Institute of Arid Meteorology, China Meteorological Administration, Lanzhou, Gansu province 730070, China

Received:2021-01-04 Revised:2021-04-12 Online:2021-06-15 Published:2021-07-05

摘要/Abstract

摘要： 本文为探究干旱对植被的累积和时滞效应，以内蒙古为研究区，基于SPEI base v.2.5和GIMMS NDVI数据集，利用Sen式斜率、Mann-Kendall突变检验和偏相关分析方法，分析干旱对植被的累积和时滞效应。结果表明：内蒙古地区归一化植被指数（Normalized difference vegetation index，NDVI）年最大值随时间变化整体呈上升趋势，标准化降水蒸散指数（Standardized precipitation evapotranspiration index，SPEI）年平均值呈降低趋势，空间趋势变化上两者呈现一定的相似性；干旱的累积效应与内蒙古北部林区及西部荒漠戈壁区NDVI呈负相关，累积月数均在10—12个月；中部草原NDVI与干旱的累积滞后关系呈正相关，且干旱的累积影响大于滞后影响；农田植被NDVI与干旱的累积滞后效应均呈正相关，但相关性较弱；通过不同水分利用条件下干旱累积与时滞效应的相关性对比发现，干旱累积效应对植被的影响远大于时滞效应。

关键词: 累积效应, 时滞效应, 归一化植被指数, 标准化降水蒸散指数

Abstract: This study was aimed to explore the cumulative and time lag effects of drought on vegetation, based on SPEI base v.2.5 and GIMMS NDVI data sets,the cumulative and time lag effects of drought on vegetation in Inner Mongolia were analyzed using Sen-type slope,Mann-Kendall mutation test and partial correlation analyed methods. The result showed:The annual maximum value of the Normalized difference vegetation index(NDVI) in Inner Mongolia showed an overall upward trend over time,and the annual average value of the Standardized precipitation evapotranspiration index (SPEI) showed a downward trend,the two showed a certain similarity in spatial trend changes;The cumulative effect of drought was negatively correlated with NDVI in the northern forest areas of Inner Mongolia and the western desert and Gobi areas,but the cumulative months of drought were all 10-12 months. There was a positive correlation between NDVI and the cumulative lag of drought in the central grassland,and the cumulative effect of drought was greater than that of drought lag. Both the NDVI of farmland vegetation and the cumulative lag effect of drought were positively correlated,but the correlation was weak;Through the correlation comparison between drought accumulative and time-lag effect under different water use conditions,it was found that the impact of drought accumulation effect on vegetation was far greater than the time lag effect.

Key words: Cumulative effect, Time-lag effect, Normalized difference vegetation index, Standardized precipitation evapotranspiration index

中图分类号:

S342.1

顾锡羚, 郭恩亮, 银山, 王永芳, 那仁满都拉, 万志强. 干旱对内蒙古植被生长的累积与滞后影响评估研究[J]. 草地学报, 2021, 29(6): 1301-1310.

GU Xi-ling, GUO En-liang, YIN Shan, WANG Yong-fang, NA Ren-mandula, WAN Zhi-qiang. Assessment of the Cumulative and Lagging Effects of Drought on Vegetation Growth in Inner Mongolia[J]. Acta Agrestia Sinica, 2021, 29(6): 1301-1310.

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干旱对内蒙古植被生长的累积与滞后影响评估研究

Assessment of the Cumulative and Lagging Effects of Drought on Vegetation Growth in Inner Mongolia

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