Qing Chang

Dr. Qing Chang


Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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10 March 2016 in Remote Sensing
Verified
Journal Article
Open access
PDF file
JWJiao Wz
Jiao Wz
Lifu ZhangLifu Zhang
Lifu Zhang
QCQing Chang
Qing Chang
DFDongjie Fu
Dongjie Fu
YCYi Cen
Yi Cen
QTQingxi Tong
Qingxi Tong
Drought is a complex hazard, and it has an impact on agricultural, ecological, and socio-economic systems. The vegetation condition index (VCI), which is derived from remote-sensing data, has been widely used for drought monitoring. However, VCI based on the normalized difference vegetation index (NDVI) does not perform well in certain circumstances. In this study, we examined the utility of the vegetation index based on the universal pattern decomposition method (VIUPD) based VCI for drought monitoring in various climate divisions across the continental United States (CONUS). We compared the VIUPD-derived VCI with the NDVI-derived VCI in various climate divisions and during different sub-periods of the growing season. It was also compared with other remote-sensing-based drought indices, such as the temperature condition index (TCI), precipitation condition index (PCI) and the soil moisture condition index (SMCI). The VIUPD-derived VCI had stronger correlations with long-term in situ drought indices, such as the Palmer Drought Severity Index (PDSI) and the standardized precipitation index (SPI-3, SPI-6, SPI-9, and SPI-12) than did the NDVI-derived VCI, and other indices, such as TCI, PCI and SMCI. The VIUPD has considerable potential for drought monitoring. As VIUPD can make use of the information from all the observation bands, the VIUPD-derived VCI can be regarded as an enhanced VCI.

18 March 2016 in Environmental Earth Sciences
Verified
Journal Article
Closed access
PDF file
TITertsea Igbawua
Tertsea Igbawua
Jiahua ZhangJiahua Zhang
Jiahua Zhang
QCQing Chang
Qing Chang
FYFengmei Yao
Fengmei Yao

12 October 2016 in Environmental Earth Sciences
Verified
Journal Article
Closed access
PDF file
QCQing Chang
Qing Chang
Jiahua ZhangJiahua Zhang
Jiahua Zhang
JWJiao Wz
Jiao Wz
FYFengmei Yao
Fengmei Yao
SWSiyuan Wang
Siyuan Wang

28 May 2016 in Environmental Earth Sciences
Verified
Journal Article
Closed access
PDF file
TITertsea Igbawua
Tertsea Igbawua
Jiahua ZhangJiahua Zhang
Jiahua Zhang
QCQing Chang
Qing Chang
FYFengmei Yao
Fengmei Yao