Analysis of Warming and Humidifying Characteristics of Mu Us Sandy Land and Its Influence on Vegetation Change

ZHU Yonghua; LUO Pingping; GUO Qian; ZHANG Pan; WANG Meiyu; YAN Long; WANG Yong

doi:10.13870/j.cnki.stbcxb.2022.05.022

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Analysis of Warming and Humidifying Characteristics of Mu Us Sandy Land and Its Influence on Vegetation Change

更新时间：2025-03-12

- Analysis of Warming and Humidifying Characteristics of Mu Us Sandy Land and Its Influence on Vegetation Change
- Vol. 36, Issue 5, Pages: 160-172(2022)
- 作者机构：
  
  1. 延安大学建筑工程学院,陕西,延安,716000
  2. 长安大学旱区地下水文与生态效应教育部重点实验室,西安,710054
  3. 长安大学水与环境学院,西安,710054
  4. 中国水利水电科学研究院,北京,100038
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2022.05.022
  CLC： S271
- Published：2022
- 稿件说明：
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ZHU Yonghua, LUO Pingping, GUO Qian, et al. Analysis of Warming and Humidifying Characteristics of Mu Us Sandy Land and Its Influence on Vegetation Change[J]. 2022, 36(5): 160-172.
DOI：

ZHU Yonghua, LUO Pingping, GUO Qian, et al. Analysis of Warming and Humidifying Characteristics of Mu Us Sandy Land and Its Influence on Vegetation Change[J]. 2022, 36(5): 160-172. DOI： 10.13870/j.cnki.stbcxb.2022.05.022.

摘要

气候暖湿化对植被生长及覆盖率乃至土地合理开发利用、生态环境保护均有重要的现实意义。以毛乌素沙地为研究区

基于1959—2019年的气象数据(气温、降水量及蒸发量)

运用气候趋势变化、M-K突变和小波周期分析特征变化

并结合生长季归一化植被指数(normalized difference vegetation index

NDVI)值探究其与研究区气象因子间的响应关系。结果表明:(1)研究区内毛乌素沙地年平均气温、年平均降水量、年平均蒸发量分别升高1.7 ℃、11.19 mm和33.82 mm

并呈显著上升趋势。(2)70年代是气象因子突变始发时间

且在70—90年代间进行了气温由冷变暖、降水由少变多、气候由干变湿的突变。(3)沙地年平均气温、降水及蒸发在时间序列上以20~30年的周期振荡最明显

且在28年处达峰

为毛乌素沙地气象因子变化的第1主周期。(4)1998—2019年NDVI总体呈现波动增加趋势

与蒸发和降水呈正相关的响应关系

蒸发显著性大于降水。研究结果可为当前气候变化下有效保护和管理生态系统提供科学依据。

Abstract

Climate warming and humidification has important practical significance for vegetation growth and coverage

as well as rational land development and utilization and ecological environment protection. Taking Mu Us sandy land as the study area

based on the meteorological data (temperature

precipitation and evaporation) from 1959 to 2019

this paper analyzed the characteristic changes of climate warming and humidification by using climate trend change

M-K mutation and wavelet cycle

and explored the response relationship between it and meteorological factors in the study area based on normalized difference vegetation index (NDVI) value in the growing season. The results showed that: (1) During the study period

the annual average temperature

annual average precipitation and annual average evaporation in Mu Us sandy land increased by 1.7 ℃

11.19 and 33.82 mm

respectively

and showed a significant upward trend. (2) The 1970s was the starting time of the sudden change of meteorological factors

and the sudden change of temperature from cold to warm

precipitation from less to more

and climate from dry to wet occurred from 1970s to 1990s. (3) The annual average temperature

precipitation and evaporation in the sandy land oscillated most obviously in the period of 20~30 years

and reached the peak at 28 years

which was the first main period of the change of meteorological factors in Mu Us sandy land. (4) From 1998 to 2019

NDVI generally showed a fluctuating and increasing trend

which was positively correlated with evaporation and precipitation. The significance of evaporation was greater than that of precipitation. The research results could provide a scientific basis for the effective protection and management of these valuable ecosystems under the current climate change.

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