Quantitative assessment of the impact of earthquake-induced geohazards on natural landscapes in Jiuzhaigou Valley

Hu, Xudong; Hu, Kaiheng; Zhang, Xiao-Peng; Li, Wei; Tang, Jingqun

doi:10.1007/s11629-018-5240-7

Cited by 22 publications

(7 citation statements)

References 25 publications

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“…Animal species, under the stress of external disturbances, are typically sensitive to changes in living habitats, foraging sites, migration routes and so forth [29]. At the same time, environmental factors such as altitude, slope, temperature and precipitation are root causes of regional formation and thus contribute to the formation of the environmental component of OUV [21,25,31,34]. Therefore, in the assessment of heritage value, OUV elements should be comprehensively evaluated according to the objective resource situation (integrity and specificity) and the actual social and environmental conditions [14,22,24].Currently, research surrounding OUV mostly involves explanations of the significance of OUV to a WNHS; the methods used to study this are relatively simple [7,9,35].…”

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confidence: 99%

Conservation Value of World Natural Heritage Sites’ Outstanding Universal Value via Multiple Techniques—Bogda, Xinjiang Tianshan

Shi

Han

et al. 2019

Sustainability

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The protection of World Natural Heritage Sites (WNHSs) has become a global undertaking, wherein Outstanding Universal Value (OUV) is an important aspect of heritage protection. Focusing on the protection of the aesthetic and bioecological values of Bogda (one component of Xinjiang Tianshan WNHS), 17 indicators are selected to construct a Heritage Value Protection Significance Index (HVPSI) and a related Heritage Value Protection Index (HVI). From these, the level of OUV conservation is obtained according to the five aspects of integrity, vulnerability, sensitivity, degree of human impact and environmental factors. The spatial autocorrelation analysis method was applied to the OUV conservation indices to comprehensively reflect the spatial-pattern characteristics of the heritage value in the study area. According to the spatial-division of the HVPSI, the plant community composition and diversity characteristics of different HVPSI zones are analyzed by a field survey (July 2018 and 2019). To verify the rationality of space partition and identify the OUV elements in each HVPSI district, a spatial-econometric model is then used to explore the relationship among HVPSI, HVI and community diversity. This study provides a scientific basis for management of heritage sites and a theoretical basis for further investigation into heritage site indicators. Sustainability 2019, 11, 5953 2 of 27examples representing significant on-going ecological and biological processes in the evolution and development of terrestrial, fresh water, coastal and marine ecosystems and communities of plants and animals [bioecology]; and (x) to contain the most important and significant natural habitats for in-situ conservation of biological diversity, including those containing threatened species of outstanding universal value from the point of view of science or conservation [habitat standards] [3]. Since the adoption of the 'Convention Concerning the Protection of the World Cultural and Natural Heritage' by the United Nations Educational, Scientific and Cultural Organization (UNESCO) on November 16, 1972, many countries have actively attempted to protect their cultural and natural heritage through declaration of world heritage sites [2]. To qualify as a WNHS, a heritage site must contribute Outstanding Universal Value (OUV). OUV is defined as 'cultural and/or natural significance which is so exceptional as to transcend national boundaries and to be of common importance for present and future generations of all humanity' [3]. Acknowledging and satisfying the requirements of OUV is an important part of heritage conservation and at the core of the standards of heritage value. The refinement of a WNHS's OUV standards is a key aspect in the declaration and protection of WNHSs. Furthermore, refining OUV requirements has important scientific and practical significance in the formulation of relevant protection and management policies [4].To define OUV, scholars have compared and analyzed the multiple values of landscapes, ecology, science, technology, ec...

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confidence: 99%

Conservation Value of World Natural Heritage Sites’ Outstanding Universal Value via Multiple Techniques—Bogda, Xinjiang Tianshan

Shi

Han

et al. 2019

Sustainability

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“…Particularly, disturbances such as insects and wildfire are expected to increase with future warming climates (Seidl et al, 2017). Stochastic events such as earthquakes, landslides and other geological hazards are also contributed to affect forest landscape change, notably the 2017 magnitude 7.0 earthquake that occurred in our study area that caused strong impacts on forest composition and structure (Hu et al, 2019). On the other hand, a large number of species’ life‐history parameters (e.g., growth rate, mortality) for the LANDIS‐II model input might also contribute to uncertainty in the response of forest landscape to climatic change (Dai et al, 2016).…”

Section: Discussionmentioning

confidence: 94%

“…Particularly, disturbances such as insects and wildfire are expected to increase with future warming climates (Seidl et al, 2017). Stochastic events such as earthquakes, landslides and other geological hazards are also contributed to affect forest landscape change, notably the 2017 magnitude 7.0 earthquake that occurred in our study area that caused strong impacts on forest composition and structure (Hu et al, 2019 (Dai et al, 2016). Additionally, because our simulations excluded shrub species, our results may overstate the effects of climate change on forest distribution that forests experience a marked migration upwards.…”

Section: Uncertainties and Caveatsmentioning

confidence: 91%

Predicting the responses of subalpine forest landscape dynamics to climate change on the eastern Tibetan Plateau

Liu

Zou

Bachelot

et al. 2021

Global Change Biology

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Subalpine vegetation across the Tibetan Plateau is globally one of the most sensitive to climate change. However, the potential landscape‐scale effects of climate change on subalpine forest dynamics remain largely unexplored. Here, we used a forest landscape model (LANDIS‐II) coupled with a forest ecosystem process model (PnET‐II) to simulate forest dynamics under future climate change in Jiuzhaigou National Nature Reserve in the eastern subalpine region of the Tibetan Plateau. We examined changes in the composition, distribution and aboveground biomass of cold temperate coniferous forests, temperate coniferous forests, deciduous broad‐leaved forests and redwood forest under four climate change scenarios (RCP2.6, RCP4.5, RCP8.5 and the current climate) from 2016 to 2096. Our model predicts that by 2096, (i) cold temperate coniferous forests will expand and increase by 7.92%, 8.18%, 8.65% and 7.02% under current climate, RCP2.6, RCP4.5 and RCP8.5 scenarios, respectively; (ii) distribution of forests as a whole shows upward elevational range shift, especially under RCP8.5 scenario and (iii) total aboveground biomass slowly increases at first and then decreases to 12%–16% of current distribution under RCPs. These results show that climate change can be expected to significantly influence forest composition, distribution and aboveground biomass in the subalpine forests of eastern Tibetan Plateau. This study is the first to simulate forest dynamics at the landscape scale in subalpine areas of the Tibetan Plateau, which provides an important step in developing more effective strategies of forest management for expected climate change, not only in China but also around the world.

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“…As a common natural disaster, landslides often cause huge destructive consequences, leading to serious casualties and property losses [1][2][3][4][5][6][7]. Slope monitoring can obtain landslide evolution information and detect abnormal changes in time, which is helpful for disaster prevention and emergency warning.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Integrated Subsurface Monitoring of Soil Slope Using Acoustic Emission and Mechanical Measurement

et al. 2021

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Compared with slope surface measurement, subsurface monitoring has the potential to detect abnormal changes at an earlier stage. Due to the large-scale deformation of landslides and the complex geological environment, the existing subsurface devices generally have limited measuring range or high economic cost. Thus, it is urgent to develop an advanced method to improve the sustainable monitoring of large subsurface deformation. In this study, a novel flexible device is designed for slope subsurface monitoring, which combines an active waveguide of acoustic emission and the distinctive structure of a large-deformation bolt. An experimental system is built and a loading process of three-stage deformation is carried out to test the performance of the flexible device. The kinematic, mechanical and acoustic emission parameters are synchronously obtained in the whole landslide model test. The results indicate that different evolution stages of a landslide can be distinguished by sliding acceleration. The axial tension within the anchor cable changes consistently with sliding thrust. In addition, using acoustic emission to quantify slope deformation has achieved strong correlation. An extra experiment with constant velocity is conducted to explore the precision of deformation quantification by acoustic emission. A schematic diagram is presented for how this novel device would be used for landslide monitoring in the field, with the potential practicability of stabilizing the slope.

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Quantitative assessment of the impact of earthquake-induced geohazards on natural landscapes in Jiuzhaigou Valley

Cited by 22 publications

References 25 publications

Conservation Value of World Natural Heritage Sites’ Outstanding Universal Value via Multiple Techniques—Bogda, Xinjiang Tianshan

Conservation Value of World Natural Heritage Sites’ Outstanding Universal Value via Multiple Techniques—Bogda, Xinjiang Tianshan

Predicting the responses of subalpine forest landscape dynamics to climate change on the eastern Tibetan Plateau

Experimental Investigation on Integrated Subsurface Monitoring of Soil Slope Using Acoustic Emission and Mechanical Measurement

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