水资源与水工程学报2023，Vol.34Issue(6)：79-87,97,10.DOI:10.11705/j.issn.1672-643X.2023.06.10
1994-2021年陕西省水资源分布演变特征
Characteristics of distribution and variations of water resources in Shaanxi Province from 1994 to 2021
摘要
Abstract
The change of natural environment and enhanced human activities have a certain impact on the spatio-temporal distribution and variations of water resources in Shaanxi Province.In this study,the em-pirical mode decomposition(EMD),M-K test,wavelet transform and spatial autocorrelation analysis are combined to analyze the spatio-temporal distribution and variations of water resources in Shaanxi Prov-ince from 1994 to 2021 on different spatial scales.The results show that the total water resources and sur-face water resources in Shaanxi Province showed a non-significant growth trend as a whole,which first de-creased then increased.The abrupt change of water resources trend occurred around 2004,mainly in a 6-year and 16-year cycle.The amount of groundwater resources showed a downward trend,with three cy-cles.On the zoning scale,northern Shaanxi presented a unique variation pattern,whereas the rest of the zones were consistent with the provincial water resources.On municipal scale,the distribution and varia-tions of water resources in Yan'an City was quite different from the other cities,which mainly exhibited a difference from east to west.The distribution of water resources in Shaanxi Province was characterized by spatial agglomerations,with high value agglomerations in southern Shaanxi and low value agglomerations in Guanzhong and northern Shaanxi,and the degree of agglomeration kept increasing.Exploring the tem-poral and spatial distribution and variation characteristics of water resources can provide a scientific basis for water resources security in the study area,also promote ecological protection and high-quality develop-ment of the Yellow River Basin.关键词
水资源分布/时空演变/经验模态分解(EMD)/空间自相关/陕西省Key words
water resources distribution/spatio-temporal variation/empirical mode decomposition(EMD)/spatial autocorrelation/Shaanxi Province分类
建筑与水利引用本文复制引用
韩昕泽,宋松柏,孟雪,范良玉,彭政博..1994-2021年陕西省水资源分布演变特征[J].水资源与水工程学报,2023,34(6):79-87,97,10.基金项目
国家自然科学基金项目(52079110) （52079110）
大学生创新创业训练计划项目(202210712166) （202210712166）
