Performance and Obstacle Tracking to Natural Forest Resource Protection Project: A Rangers’ Case of Qilian Mountain, China

Ya, Wang; Zhou, Lihua; Yang, Guizhi; Guo, Rui; Xia, Cuizhen; Yang, Liu

doi:10.3390/ijerph17165672

Cited by 22 publications

(10 citation statements)

References 9 publications

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“…Wang et al found that 28.6% of grassland restoration was attributed to grazing prohibition in the Qinghai–Tibet Plateau 4 . On the other hand, it may also be related to various ecological protection measures implemented by the government, such as protecting natural forests 76 , converting farmland to forests or grasslands 77 , and establishing the Qilian Mountain National Park Nature Reserve, which have had a positive influence on the vegetation 75 . Furthermore, considering the moderately degraded areas around Babao Town and Arou Township with point-distribution, this may be related to the overgrazing surrounding residential plots, resulting in a loss in vegetation cover 78 .…”

Section: Discussionmentioning

confidence: 99%

Impacts of climate change and human activities on different degraded grassland based on NDVI

Hou

Yang

et al. 2022

Sci Rep

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Grassland degradation has emerged as a serious socio-economic and ecological problem, endangering both long-term usage and the regional biogeochemical cycle. Climate change and human activities are the two leading factors leading to grassland degradation. However, it is unclear what the degradation level caused by these two factors is. Using the normalized difference vegetation index (NDVI) and coefficient of variation of NDVI (CVNDVI), the spatial distribution features of grassland degradation or restoration were analyzed in Qilian County in the northeast of the Qinghai–Tibet Plateau. The dominant climate variables affecting NDVI variation were selected through the combination of random forest model and stepwise regression method to improve the residual trend analysis, and on this basis, twelve possible scenarios were established to evaluate the driving factors of different degraded grasslands. Finally, used the Hurst index to forecast the trend of grassland degradation or restoration. The results showed that approximately 55.0% of the grassland had been degraded between 2000 and 2019, and the area of slight degradation (NDVIslope > 0; CVNDVI (slope) > 0; NDVIvalue > 0.2) accounted for 48.6%. These regions were centered in the northwest of Qilian County. Climate and human activities had a joint impact on grassland restoration or degradation. Human activities played a leading role in grassland restoration, while climate change was primarily a driver of grassland degradation. The regions with slight degradation or re-growing (NDVIslope > 0; CVNDVI (slope) > 0), moderate degradation (NDVIslope < 0; CVNDVI (slope) > 0), and severe degradation or desertification (NDVIslope < 0; CVNDVI (slope) < 0) were dominated by the joint effects of climate and anthropogenic activity accounted for 34.3%, 3.3%, and 1.3%, respectively, of the total grassland area. Grasslands in most areas of Qilian County are forecasted to continue to degrade, including the previously degraded areas, with continuous degradation areas accounting for 54.78%. Accurately identifying the driving factors of different degraded grassland and predicting the dynamic change trend of grassland in the future is the key to understand the mechanism of grassland degradation and prevent grassland degradation. The findings offer a reference for accurately identifying the driving forces in grassland degradation, as well as providing a scientific basis for the policy-making of grassland ecological management.

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Section: Discussionmentioning

confidence: 99%

Impacts of climate change and human activities on different degraded grassland based on NDVI

Hou

Yang

et al. 2022

Sci Rep

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“…With the rapid growth of the population and recreational demand in urban agglomeration areas, there may be a certain relationship between ecological restoration and recreational uses, but this impact has been overlooked compared to other perturbations [ 10 , 12 ]. The innovation of this study is to characterize the spatial distribution of ELR patterns, and to investigate the coupling mechanism of ELR and recreational use.…”

Section: Discussionmentioning

confidence: 99%

“…In many cities, the potential for human benefit (e.g., aesthetics, recreation) has become one of the driving forces for ELR [ 9 ]. In this context, an empirical examination of the spatial interaction between ELR and RUoEL in an urban agglomeration will provide insights into regionally environmental health planning to enhance the recreational well-being of residents [ 10 , 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Spatial Coupling and Causal Effects between the Recreational Use of Ecological Land and Restoration: A Case Study of the Pearl River Delta Urban Agglomeration

Wang

Feng

2021

IJERPH

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As the urbanization and industrialization of China’s urban agglomerations reach increasingly high levels, residents are voicing a growing demand for improved green public sport and recreational space. The coordination of ecological land restoration (ELR) and recreational use at the regional level is therefore urgent. This study demonstrates the spatiotemporal evolution of coupled ELR and the recreational use of ecological land (RUoEL) in the Pearl River Delta urban agglomeration based on spatial interpretation, remote sensing mapping, and spatial statistical analysis. A geographical and temporally weighted regression is used to test the spatial effects of the RUoEL on the evolution of the ELR patterns. The results show that the RUoEL (mainly greenways and ecological recreational spaces) and ELR exert a certain degree of coupled spatial characteristics, and that the former significantly impacts the latter. These spatial differences are more notable in areas with high-level ecological recreational spaces, or which are located near densely populated built-up areas. Recreation-oriented ELR is therefore relatively easy to develop in these areas. The results provide important guidelines for the development of ecosystem service patterns in urban agglomerations that include the coexistence of ELR and recreational use, which will strengthen the academic support for regional ELR planning and improve public health.

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“…Monitoring of areas of difficult access is still a challenging task, even though novel advanced technologies have emerged, e.g., systems using infrared rays and cameras installed in fixed and mobile terrain locations [2]. Nowadays, the monitoring activity in these areas is still carried out in situ by one or several forest rangers located at fixed points within the territory and moving around when necessary [3], [4]. Since human personnel is required, these monitoring systems suffer from significant shortcomings as they (i) are unsuitable for situations that require real-time response since it is people who detect and report the hazard, (ii) compromise personnel safety by being close to the risk and (iii) could provide inaccurate information, leading to a misunderstanding of the magnitude of a hazard.…”

Section: Introductionmentioning

confidence: 99%

VPP: Visibility-Based Path Planning Heuristic for Monitoring Large Regions of Complex Terrain Using a UAV Onboard Camera

Sanchez-Fernandez

Romero

Burgueno

et al. 2022

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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The use of Unmanned Aerial Vehicles (UAVs) with multiple onboard sensors has grown significantly in tasks involving terrain coverage such as environmental and civil monitoring, disaster management, and forest fire fighting. Many of these tasks require a quick and early response, which makes maximising the land covered by the flight path a challenging objective, especially when the area to be monitored is irregular, large and includes many blind spots. Accordingly, state-of-the-art total viewshed algorithms can be of great help to analyse large areas and find new paths providing maximum visibility. This paper shows how the total viewshed computation is a valuable tool for generating paths that provide maximum visibility during a flight. We introduce a new heuristic called Visibility-based Path Planning (VPP) that offers a different solution to the path planning problem. VPP identifies the hidden areas from the target territory to generate a path that provides the highest visual coverage. Simulation results show that VPP can cover up to 98.7% of the Montes de Malaga Natural Park and 94.5% of the Sierra de las Nieves National Park, both located within the province of Malaga (Spain) and chosen as regions of interest. In addition, a real flight test confirmed the high visibility achieved using VPP. Our methodology and analysis can be easily applied to enhance monitoring in other large outdoor areas.

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Performance and Obstacle Tracking to Natural Forest Resource Protection Project: A Rangers’ Case of Qilian Mountain, China

Cited by 22 publications

References 9 publications

Impacts of climate change and human activities on different degraded grassland based on NDVI

Impacts of climate change and human activities on different degraded grassland based on NDVI

Spatial Coupling and Causal Effects between the Recreational Use of Ecological Land and Restoration: A Case Study of the Pearl River Delta Urban Agglomeration

VPP: Visibility-Based Path Planning Heuristic for Monitoring Large Regions of Complex Terrain Using a UAV Onboard Camera

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