Spatial and Temporal Variation Characteristics of Drought in Guizhou Province Based on VCI and Division of Arid Regions
Due to its unique dual hydrological structure of surface water and groundwater and typical karst low mountain and hilly landform area,the agricultural ecological environment of Guizhou Province is extremely fragile,and it is prone to agricultural disasters caused by meteorological factors,leading to...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Pearl River
2021-01-01
|
| Series: | Renmin Zhujiang |
| Subjects: | |
| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2021.09.006 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841535686446940160 |
|---|---|
| author | DAI Renli ZHONG Jiusheng |
| author_facet | DAI Renli ZHONG Jiusheng |
| author_sort | DAI Renli |
| collection | DOAJ |
| description | Due to its unique dual hydrological structure of surface water and groundwater and typical karst low mountain and hilly landform area,the agricultural ecological environment of Guizhou Province is extremely fragile,and it is prone to agricultural disasters caused by meteorological factors,leading to reduced agricultural production.This paper calculates the VCI of Guizhou Province from 2001 to 2018 by remote sensing technology,explores the agricultural drought situation in Guizhou Province,divides the spatial distribution of seasonal arid regions in Guizhou Province with ArcGIS spatial overlay analysis,and analyzes the VCI trend characteristics of Guizhou Province through the unary linear trend method.The results show that:①The seasonal and inter-annual VCI in Guizhou Province generally show a downward trend,most obviously in karst areas,followed by non-karst areas;②Guizhou Province's seasonal droughts are mainly spring and winter droughts,and dry karst areas is a drought-prone area;③The drought time characteristics of Guizhou Province are mainly seasonal continuous drought and three-season continuous drought. |
| format | Article |
| id | doaj-art-3435a3fd63c14b95a0b98196b93dac3b |
| institution | Kabale University |
| issn | 1001-9235 |
| language | zho |
| publishDate | 2021-01-01 |
| publisher | Editorial Office of Pearl River |
| record_format | Article |
| series | Renmin Zhujiang |
| spelling | doaj-art-3435a3fd63c14b95a0b98196b93dac3b2025-01-15T02:28:30ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352021-01-014247646779Spatial and Temporal Variation Characteristics of Drought in Guizhou Province Based on VCI and Division of Arid RegionsDAI RenliZHONG JiushengDue to its unique dual hydrological structure of surface water and groundwater and typical karst low mountain and hilly landform area,the agricultural ecological environment of Guizhou Province is extremely fragile,and it is prone to agricultural disasters caused by meteorological factors,leading to reduced agricultural production.This paper calculates the VCI of Guizhou Province from 2001 to 2018 by remote sensing technology,explores the agricultural drought situation in Guizhou Province,divides the spatial distribution of seasonal arid regions in Guizhou Province with ArcGIS spatial overlay analysis,and analyzes the VCI trend characteristics of Guizhou Province through the unary linear trend method.The results show that:①The seasonal and inter-annual VCI in Guizhou Province generally show a downward trend,most obviously in karst areas,followed by non-karst areas;②Guizhou Province's seasonal droughts are mainly spring and winter droughts,and dry karst areas is a drought-prone area;③The drought time characteristics of Guizhou Province are mainly seasonal continuous drought and three-season continuous drought.http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2021.09.006vegetation condition index (VCI)spatial overlay analysisarid regionKarst |
| spellingShingle | DAI Renli ZHONG Jiusheng Spatial and Temporal Variation Characteristics of Drought in Guizhou Province Based on VCI and Division of Arid Regions Renmin Zhujiang vegetation condition index (VCI) spatial overlay analysis arid region Karst |
| title | Spatial and Temporal Variation Characteristics of Drought in Guizhou Province Based on VCI and Division of Arid Regions |
| title_full | Spatial and Temporal Variation Characteristics of Drought in Guizhou Province Based on VCI and Division of Arid Regions |
| title_fullStr | Spatial and Temporal Variation Characteristics of Drought in Guizhou Province Based on VCI and Division of Arid Regions |
| title_full_unstemmed | Spatial and Temporal Variation Characteristics of Drought in Guizhou Province Based on VCI and Division of Arid Regions |
| title_short | Spatial and Temporal Variation Characteristics of Drought in Guizhou Province Based on VCI and Division of Arid Regions |
| title_sort | spatial and temporal variation characteristics of drought in guizhou province based on vci and division of arid regions |
| topic | vegetation condition index (VCI) spatial overlay analysis arid region Karst |
| url | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2021.09.006 |
| work_keys_str_mv | AT dairenli spatialandtemporalvariationcharacteristicsofdroughtinguizhouprovincebasedonvcianddivisionofaridregions AT zhongjiusheng spatialandtemporalvariationcharacteristicsofdroughtinguizhouprovincebasedonvcianddivisionofaridregions |