Analysis of temporal and spatial characteristics of hazard potential of wind blown sand environment in Xinjiang from 2001 to 2020

doi:10.7522/j.issn.1000-694X.2022.00133

Journal of Desert Research ›› 2023, Vol. 43 ›› Issue (3): 274-283.DOI: 10.7522/j.issn.1000-694X.2022.00133

Analysis of temporal and spatial characteristics of hazard potential of wind blown sand environment in Xinjiang from 2001 to 2020

Yazhou Zhao¹^,²^,³^,⁴^,⁵^,⁶(), Shengyu Li¹^,²^,³^,⁴^,⁵(), Shijie Wang¹^,²^,⁴^,⁵, Jinglong Fan¹^,²^,⁴^,⁵, Yan Wu⁶

^1.National Engineering Technology Research Center for Desert-Oasis Ecological Construction /, Xinjiang Institute of Ecology and Geography，Chinese Academy of Sciences，Urumqi 830011，China
^2.State Key Laboratory of Desert and Oasis Ecology /, Xinjiang Institute of Ecology and Geography，Chinese Academy of Sciences，Urumqi 830011，China
^3.Mosuowan Desert Research Station /, Xinjiang Institute of Ecology and Geography，Chinese Academy of Sciences，Urumqi 830011，China
^4.Taklimakan Desert Research Station, Xinjiang Institute of Ecology and Geography，Chinese Academy of Sciences，Urumqi 830011，China
^5.University of Chinese Academy of Sciences，Beijing 100049，China
^6.The Second Surveying and Mapping Institute of Xinjiang，Urumqi 830011，China

Received:2022-07-28 Revised:2022-11-01 Online:2023-05-20 Published:2023-05-31
Contact: Shengyu Li

Abstract

Abstract:

Xinjiang has complex topography and climate， abundant sand sources， strong wind， and frequent sandstorm activities. Sandstorm disasters are an important threat to engineering construction and economic development. The assessment of the hazard potential of the wind blown sand environment can guide the construction of sand area projects and the formulation of sand control plans， and is an important basic work for disaster emergency management. In this paper， eight indicators including soil organic carbon content， soil water content， soil sand content， land use type， vegetation index， precipitation， evapotranspiration and resultant drift potential are selected to analyze the temporal and spatial variation of hazard potential of wind blown sand environment in Xinjiang from 2001 to 2020. Results show that：（1）The hazard potential of the wind blown sand environment in Xinjiang has obvious seasonal variation characteristics， and the area with the hazard potential value greater than 3 gradually increases in summer， autumn， spring and winter. Lower hazard potential values in February and November. （2）The hazard potential of wind blown sand environment shows the spatial distribution characteristics of high in the east and low in the west， low in mountainous areas and high in the plain. High value regions are located in Tarim Basin， Junggar basin， Turpan Basin and other regions with abundant sand and strong wind power. Low value regions are mainly distributed in areas with high vegetation coverage， such as mountains， oases and river banks. （3）From 2001 to 2020， the annual average value of the hazard potential of wind blown sand environment in Xinjiang showed a change process of first rising and then declining. The overall change trend is relatively stable， and the proportion of pixels that are stable， slightly improved and slightly intensified is 84.4%， 14.72% and 0.87% respectively. The research results can provide an important reference for the layout and decision-making of economic and social development in windy and sandy areas in Xinjiang.

Key words: wind blown sand environment, hazard potential, temporal and spatial changes, Xinjiang

CLC Number:

P429

Yazhou Zhao, Shengyu Li, Shijie Wang, Jinglong Fan, Yan Wu. Analysis of temporal and spatial characteristics of hazard potential of wind blown sand environment in Xinjiang from 2001 to 2020[J]. Journal of Desert Research, 2023, 43(3): 274-283.

Figures/Tables 10

References 38

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自变量	指标	空间分辨率	来源	单位	指标处理
X₁	土壤有机碳含量	250 m	OpenLandMap	g·kg^-1	负向
X₂	土壤水含量	250 m	OpenLandMap	%	负向
X₃	土壤沙含量	250 m	OpenLandMap	%（kg·kg^-1）	正向
X₄	土地利用类型	1 000 m	中国科学院资源环境科学与数据中心	—	正向
X₅	归一化植被指数	1 000 m	Earthdata	—	负向
X₆	降水量	2.5′	TERRACLIMATE	mm	负向
X₇	潜在蒸散发量	2.5′	TERRACLIMATE	mm	正向
X₈	合成输沙势	0.1°	欧洲中期数值预报中心（ECMWF）	VU	正向
	沙地类型	1:10万	国家青藏高原科学数据中心	—	—

自变量	指标	空间分辨率	来源	单位	指标处理
X₁	土壤有机碳含量	250 m	OpenLandMap	g·kg^-1	负向
X₂	土壤水含量	250 m	OpenLandMap	%	负向
X₃	土壤沙含量	250 m	OpenLandMap	%（kg·kg^-1）	正向
X₄	土地利用类型	1 000 m	中国科学院资源环境科学与数据中心	—	正向
X₅	归一化植被指数	1 000 m	Earthdata	—	负向
X₆	降水量	2.5′	TERRACLIMATE	mm	负向
X₇	潜在蒸散发量	2.5′	TERRACLIMATE	mm	正向
X₈	合成输沙势	0.1°	欧洲中期数值预报中心（ECMWF）	VU	正向
	沙地类型	1:10万	国家青藏高原科学数据中心	—	—

海拔	低海拔区（<1 000 m）	中海拔区（1 000~2 000 m）	亚高海拔区（2 000~4 000 m）	高海拔区（4 000~6 000 m）	极高海拔区（>6 000 m）
最小值	1.25	1.10	1.05	1.34	—
最大值	5.00	5.00	4.27	4.37	—
均值	3.08	2.75	1.96	2.52	—

海拔	低海拔区（<1 000 m）	中海拔区（1 000~2 000 m）	亚高海拔区（2 000~4 000 m）	高海拔区（4 000~6 000 m）	极高海拔区（>6 000 m）
最小值	1.25	1.10	1.05	1.34	—
最大值	5.00	5.00	4.27	4.37	—
均值	3.08	2.75	1.96	2.52	—

自变量	5月	10月	11月
归一化植被指数	0.0404	0.0684	0.0700
潜在蒸散发量	0.0811	0.0622	0.1105
降水量	0.3113	0.0793	0.1953
合成输沙势	0.3057	0.1164	0.5151

Analysis of temporal and spatial characteristics of hazard potential of wind blown sand environment in Xinjiang from 2001 to 2020

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