Arid
DOI10.3724/SP.1.1226.2020.00144
Mapping the dynamic degree of aeolian desertification in the Shiyang River Basin from 1975 to 2010
Liao, Jie; Wang, Tao; Ma, ShaoXiu; Guo, Jian
Corresponding AuthorLiao, J
JournalSCIENCES IN COLD AND ARID REGIONS
ISSN1674-3822
Year Published2020
Volume12Issue:3Pages:144-153
Abstract in EnglishThe Shiyang River Basin is an area of China that is severly affected by aeolian desertification. Thus, we established an aeolian desertified land classification system for visual interpretation, which classified the Aeolian Desertified. Land (ADL) into Slight (SL), Moderate (M), Severe (S) and Extremely Severe (ES) according to the severity. Imagery of Landsat series (acquired in 1975, 1990, 2000 and 2010) were employed to monitor the status, trend and spatial pattern of aeolian desertification, especially to map the overall spatial pattern of ADL dynamics by proposing a new Dynamic Index (DI) in the Shiyang River Basin from 1975 to 2010. The results show a generally decreasing trend from 1975 to 2010. However, the ES ADL kept increasing throughout the whole study period. Moreover, the area of ADLs with different severity increased with increasing severity, this S and ES ADLs dominated characteristics of aeolian desertification was contrary to those sandy lands in eastern China where was dominated by SL and M ADLs. Among the three sub-periods of 1975-1990, 19902000 and 2000-2010, the first two were the restoration stage, while the last one was the expansion stage of aeolian desertification. Moreover, all these new ADLs occurred in Minqin County during 2000-2010, indicating a detrimental increase of aeolian desertification in Minqin, and the concentration of ADLs toward the lower reaches of the Shiyang River Basin. The DI works well to identify areas with desertification changes no matter the sub-periods. Moreover, DI results disclosed a stable status of aeolian desertification, and the DI decreased with increasing ADL severity. These results indicate that it will be difficult to control the expansion of aeolian desertification in Minqin County over an extended period of time. Thus, we suggest effective and long-lasting aeolian desertification control programs in the Shiyang River Basin, especially in Minqin, and SL and M ADLs should have priority in facilitating a quick reversal of aeolian desertification.
Keyword in Englishaeolian desertification dynamic degree Shiyang River Basin Minqin
SubtypeArticle
Language英语
Indexed ByESCI
WOS IDWOS:000573656800003
WOS KeywordQINGHAI-TIBET PLATEAU ; HORQIN SANDY LAND ; ENVIRONMENTAL-CHANGE ; CHINA ; REGION ; OASIS
WOS SubjectGeography, Physical
WOS Research AreaPhysical Geography
Document Type期刊论文
Identifierhttp://119.78.100.177/qdio/handle/2XILL650/334622
Affiliation[Liao, Jie; Wang, Tao; Ma, ShaoXiu] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, 320 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China; [Liao, Jie; Ma, ShaoXiu] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Drylands Salinizat Res Stn, Lanzhou 730000, Gansu, Peoples R China; [Guo, Jian] Chinese Acad Sci, Lanzhou Branch, Lanzhou 730000, Gansu, Peoples R China
Recommended Citation
GB/T 7714
Liao, Jie,Wang, Tao,Ma, ShaoXiu,et al. Mapping the dynamic degree of aeolian desertification in the Shiyang River Basin from 1975 to 2010[J],2020,12(3):144-153.
APA Liao, Jie,Wang, Tao,Ma, ShaoXiu,&Guo, Jian.(2020).Mapping the dynamic degree of aeolian desertification in the Shiyang River Basin from 1975 to 2010.SCIENCES IN COLD AND ARID REGIONS,12(3),144-153.
MLA Liao, Jie,et al."Mapping the dynamic degree of aeolian desertification in the Shiyang River Basin from 1975 to 2010".SCIENCES IN COLD AND ARID REGIONS 12.3(2020):144-153.
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