Anthropogenic contributions dominate trends of vegetation cover change over the farming-pastoral ecotone of northern China

Liu, Zhengjia; Liu, Yansui; Li, Yurui

doi:10.1016/j.ecolind.2018.07.063

Cited by 128 publications

(84 citation statements)

References 47 publications

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“…Similar to most regions of the world, vegetation greening trends are widely observed in the Loess Plateau over the past decade [17][18][19]. Earlier studies report that climate change, land management, carbon dioxide concentration increase, and dry and wet atmospheric depositions of nitrogen are regarded as the main reasons of vegetation greening trends at the global and regional scales [18][19][20]. A previous study of ours showed that human activities contributed more to the increase of vegetation cover in the Loess Plateau than climatic and other factors [18].…”

Section: Introductionmentioning

confidence: 96%

“…Increased vegetation cover plays the primary role in decreased soil erosion and increased evapotranspiration [8,11]. Similar to most regions of the world, vegetation greening trends are widely observed in the Loess Plateau over the past decade [17][18][19]. Earlier studies report that climate change, land management, carbon dioxide concentration increase, and dry and wet atmospheric depositions of nitrogen are regarded as the main reasons of vegetation greening trends at the global and regional scales [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…Earlier studies report that climate change, land management, carbon dioxide concentration increase, and dry and wet atmospheric depositions of nitrogen are regarded as the main reasons of vegetation greening trends at the global and regional scales [18][19][20]. A previous study of ours showed that human activities contributed more to the increase of vegetation cover in the Loess Plateau than climatic and other factors [18]. In the context of climate change, extreme events are increasing worldwide [21][22][23][24][25][26], and the Loess Plateau does not constitute an exception.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, vegetation cover change in the Loess Plateau has attracted high attention, especially within the ecological and remote sensing communities [8,17,18,29,30]. Many previous studies have focused on the biological and hydrological effects of vegetation cover change [8,30,31].…”

Section: Introductionmentioning

confidence: 99%

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Does Anthropogenic Land Use Change Play a Role in Changes of Precipitation Frequency and Intensity over the Loess Plateau of China?

Liu

2018

Remote Sensing

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Human transformation of landscapes is pervasive and accelerating across the Earth. However, existing studies have not provided a comprehensive picture of how precipitation frequency and intensity respond to vegetation cover change. Therefore, this study took the Loess Plateau as a typical example, and used satellite-based Normalized Difference Vegetation Index (NDVI) data and daily gridded climatic variables to assess the responses of precipitation dynamics to human-induced vegetation cover change. Results showed that the total precipitation amount exhibited little change at the regional scale, showing an upward but statistically insignificant (p > 0.05) trend of 7.6 mm/decade in the period 1982–2015. However, the frequency of precipitation with different intensities showed large variations over most of the Loess Plateau. The number of rainy days (light, moderate, heavy, very heavy and severe precipitation) increased in response to increased vegetation cover, especially in the central-eastern Loess Plateau. Anthropogenic land cover change is largely responsible for precipitation intensity changes. Additionally, this study also observed high spatially explicit heterogeneity in different precipitation intensities in response to vegetation cover change across the Loess Plateau. These findings provide some reference information for our understanding of precipitation frequency and intensity changes in response to regional vegetation cover change in the Loess Plateau.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Does Anthropogenic Land Use Change Play a Role in Changes of Precipitation Frequency and Intensity over the Loess Plateau of China?

Liu

2018

Remote Sensing

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“…where n is the cumulative number of years, NDVI i represents the NDVI value of the i-th year, and SLOPE represents the variation trend of the observation NDVI values. For vegetation variation, SLOPE > 0 indicates plant restoration and SLOPE < 0 indicates plant degradation during the study period [51]. The significance of the trends for all pixels was evaluated using a two-tailed Student's t test.…”

Section: Vegetation Coverage Changesmentioning

confidence: 99%

Vegetation Response to Urban Landscape Spatial Pattern Change in the Yangtze River Delta, China

Wang

Fang

2019

Sustainability

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Urbanization has destroyed and fragmented large amounts of natural habitats, resulting in serious consequences for urban ecosystems over past decades, especially in the rapidly urbanizing areas of developing countries. The Yangtze River Delta Urban Agglomeration, which has experienced the fastest socioeconomic development in China, was selected as the study area. To explore the relationship between urbanization and vegetation dynamics at the agglomeration scale, the spatiotemporal characteristics of urban expansion and vegetation variation of the study area were evaluated by landscape spatial analysis, regression analysis, and trend analysis. The results show that the urbanization level of the study area exhibited a continuous upward trend, with Shanghai as the regional core city, and the level of urbanization gradually decreased from the center towards the periphery of the urban agglomeration. The overall urban expansion presented obvious landscape spatial heterogeneity characteristics and the emergence of new cities and towns enhanced landscape connectedness and created a more aggregated urban agglomeration. Noticeable spatiotemporal differences of vegetation variation were observed from 2004 to 2013. Areas with relatively low vegetation coverage showed a steady growth trend, while those with higher vegetation coverage reported a significant decreasing trend. The spatial heterogeneity analysis of the vegetation trend demonstrated that vegetation degradation was a dominant and inevitable process across the study area. However, some parts of the urban sprawl area, especially at the periphery of the metropolis, may experience a greening trend rather than a browning trend, indicating that urbanization does not necessarily lead to large-scale vegetation degradation. Although urbanization poses a negative impact on vegetation and physical environments, urbanization has not yet reduced a large area of vegetation at the regional level.

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The stereoscopic spatial connectivity of wetland ecosystems: Evaluation method and regulation measures

Yang

Wang

et al. 2021

Hydrological Processes

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Currently, the weakened connectivity of wetland ecosystems is the most important factor leading to the destruction, degradation, and disappearance of wetlands. Studying changes in wetland ecosystems connectivity enables the understanding the hydrological processes in wetland ecosystems and provides significant support for the study of ecological water demand. However, recent research on the connectivity of wetland ecosystems has primarily focused on intuitive Heilongjiang River Basin in China (HRBC) connectivity in terms of hydrology and geomorphology, while the impact of wetland ecosystems on habitats has been ignored. The present study applied an innovative method to evaluate and regulate the stereoscopic spatial connectivity (SSC) of the wetland ecosystems in the HRBC. In this method, the water requirements of typical organisms in the region were considered, and the hydrological trends in the wetland ecosystems along with the status of the SSC were analysed using remote sensing images. A regulation mode for improving the stereoscopic spatial connectivity index (SSCI) was proposed. The results revealed that over the past 35 years, the wetland ecosystems in the study area shrank significantly, with the SSCI decreasing from 41.30% in 1980 to 35.08% in 2015. By comparing the correlations among temperature, precipitation, agricultural land, construction land, and the wetland ecosystems during the same period, it was proven that human activity serves as the major driving force behind the observed loss of wetlands in the system. Subsequently, the key protected areas needing protection to maintain the SSC of the wetland ecosystems were clarified, and the key recovery areas were determined based on three scenarios featuring high, medium, and low feasibility, which greatly improved the SSCI and generalization route after regulation. In general, the proposed SSC evaluation and regulation method is widely applicable to all kinds of wetland ecosystems located on animal habitat and migration routes, which can fully reflect the ecological effects of wetland ecosystems, and this method has certain reference significance for the evaluation and regulation of wetland ecosystems in other regions.

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Anthropogenic contributions dominate trends of vegetation cover change over the farming-pastoral ecotone of northern China

Cited by 128 publications

References 47 publications

Does Anthropogenic Land Use Change Play a Role in Changes of Precipitation Frequency and Intensity over the Loess Plateau of China?

Does Anthropogenic Land Use Change Play a Role in Changes of Precipitation Frequency and Intensity over the Loess Plateau of China?

Vegetation Response to Urban Landscape Spatial Pattern Change in the Yangtze River Delta, China

The stereoscopic spatial connectivity of wetland ecosystems: Evaluation method and regulation measures

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