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Longqian Chen
Jiangsu Key Laboratory of Resources and Environmental Information Engineering, School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China

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Journal article
Published: 20 August 2015 in Remote Sensing
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This paper presents a new assessment method for alleviating urban heat island (UHI) effects by using an urban land surface moisture (ULSM) index. With the aid of Landsat 8 OLI/TIRS data, the land surface temperature (LST) was retrieved by a mono-window algorithm, and ULSM was extracted by tasselled cap transformation. Polynomial regression and buffer analysis were used to analyze the effects of ULSM on the LST, and the alleviation effect of ULSM was compared with three vegetation indices, GVI, SAVI, and FVC, by using the methods of grey relational analysis and Taylor skill calculation. The results indicate that when the ULSM value is greater than the value of an extreme point, the LST declines with the increasing ULSM value. Areas with a high ULSM value have an obvious reducing effect on the temperature of their surrounding areas within 150 m. Grey relational degrees and Taylor skill scores between ULSM and the LST are 0.8765 and 0.9378, respectively, which are higher than the results for the three vegetation indices GVI, SAVI, and FVC. The reducing effect of the ULSM index on environmental temperatures is significant, and ULSM can be considered to be a new and more effective index to estimate UHI alleviation effects for urban areas.

ACS Style

Yu Zhang; Longqian Chen; Yuchen Wang; Longgao Chen; Fei Yao; Peiyao Wu; Bingyi Wang; Yuanyuan Li; Tianjian Zhou; Ting Zhang. Research on the Contribution of Urban Land Surface Moisture to the Alleviation Effect of Urban Land Surface Heat Based on Landsat 8 Data. Remote Sensing 2015, 7, 10737 -10762.

AMA Style

Yu Zhang, Longqian Chen, Yuchen Wang, Longgao Chen, Fei Yao, Peiyao Wu, Bingyi Wang, Yuanyuan Li, Tianjian Zhou, Ting Zhang. Research on the Contribution of Urban Land Surface Moisture to the Alleviation Effect of Urban Land Surface Heat Based on Landsat 8 Data. Remote Sensing. 2015; 7 (8):10737-10762.

Chicago/Turabian Style

Yu Zhang; Longqian Chen; Yuchen Wang; Longgao Chen; Fei Yao; Peiyao Wu; Bingyi Wang; Yuanyuan Li; Tianjian Zhou; Ting Zhang. 2015. "Research on the Contribution of Urban Land Surface Moisture to the Alleviation Effect of Urban Land Surface Heat Based on Landsat 8 Data." Remote Sensing 7, no. 8: 10737-10762.

Journal article
Published: 25 December 2014 in Ecological Research
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ACS Style

Yuanyuan Li; Longqian Chen; Hongyu Wen. Changes in the composition and diversity of bacterial communities 13 years after soil reclamation of abandoned mine land in eastern China. Ecological Research 2014, 30, 357 -366.

AMA Style

Yuanyuan Li, Longqian Chen, Hongyu Wen. Changes in the composition and diversity of bacterial communities 13 years after soil reclamation of abandoned mine land in eastern China. Ecological Research. 2014; 30 (2):357-366.

Chicago/Turabian Style

Yuanyuan Li; Longqian Chen; Hongyu Wen. 2014. "Changes in the composition and diversity of bacterial communities 13 years after soil reclamation of abandoned mine land in eastern China." Ecological Research 30, no. 2: 357-366.

Research article
Published: 11 December 2014 in PLoS ONE
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The growing concern about the effectiveness of reclamation strategies has motivated the evaluation of soil properties following reclamation. Recovery of belowground microbial community is important for reclamation success, however, the response of soil bacterial communities to reclamation has not been well understood. In this study, PCR-based 454 pyrosequencing was applied to compare bacterial communities in undisturbed soils with those in reclaimed soils using chronosequences ranging in time following reclamation from 1 to 20 year. Bacteria from the Proteobacteria, Chloroflexi, Actinobacteria, Acidobacteria, Planctomycetes and Bacteroidetes were abundant in all soils, while the composition of predominant phyla differed greatly across all sites. Long-term reclamation strongly affected microbial community structure and diversity. Initial effects of reclamation resulted in significant declines in bacterial diversity indices in younger reclaimed sites (1, 8-year-old) compared to the undisturbed site. However, bacterial diversity indices tended to be higher in older reclaimed sites (15, 20-year-old) as recovery time increased, and were more similar to predisturbance levels nearly 20 years after reclamation. Bacterial communities are highly responsive to soil physicochemical properties (pH, soil organic matter, Total N and P), in terms of both their diversity and community composition. Our results suggest that the response of soil microorganisms to reclamation is likely governed by soil characteristics and, indirectly, by the effects of vegetation restoration. Mixture sowing of gramineae and leguminosae herbage largely promoted soil geochemical conditions and bacterial diversity that recovered to those of undisturbed soil, representing an adequate solution for soil remediation and sustainable utilization for agriculture. These results confirm the positive impacts of reclamation and vegetation restoration on soil microbial diversity and suggest that the most important phase of microbial community recovery occurs between 15 and 20 years after reclamation.

ACS Style

Yuanyuan Li; Hongyu Wen; Longqian Chen; Tingting Yin. Succession of Bacterial Community Structure and Diversity in Soil along a Chronosequence of Reclamation and Re-Vegetation on Coal Mine Spoils in China. PLoS ONE 2014, 9, e115024 .

AMA Style

Yuanyuan Li, Hongyu Wen, Longqian Chen, Tingting Yin. Succession of Bacterial Community Structure and Diversity in Soil along a Chronosequence of Reclamation and Re-Vegetation on Coal Mine Spoils in China. PLoS ONE. 2014; 9 (12):e115024.

Chicago/Turabian Style

Yuanyuan Li; Hongyu Wen; Longqian Chen; Tingting Yin. 2014. "Succession of Bacterial Community Structure and Diversity in Soil along a Chronosequence of Reclamation and Re-Vegetation on Coal Mine Spoils in China." PLoS ONE 9, no. 12: e115024.