Article
Geosciences, Multidisciplinary
Ying Zhao, Bin Zhang, Yuli He, Jun Luo, Lei Wang, Qingchun Deng, Hui Liu, Dan Yang
Summary: This study explores the relationship between the spatial distribution of gullies and geological conditions using geospatial statistics and correlation analysis. The results show that gullies in the study area have a clustering pattern, and there is a strong correlation between geological conditions and the clustering characteristics of gullies.
Article
Environmental Sciences
Renping Wan, Deyi Luo, Jianyi Liu, Yan Zhang, Yongqi Xiang, Wang Yan, Yujie Xie, Jiaxuan Mi, Fan Zhang, Xueqin Wan, Lianghua Chen, Jian Zhang, Xingyan Huang, Yu Zhong
Summary: This study aimed to reveal the effects of Pennisetum sinese (PS) and natural vegetation (NV) on soil quality and explore the feasibility of introducing PS for vegetation restoration in the dry-hot valley region. The results showed that PS significantly improved soil properties and maintained stable soil quality, indicating that vegetation restoration has a positive impact on soil properties and quality.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Plant Sciences
Yaomei Qiao, Jian Liu, Xun Gong
Summary: This study investigated the evolutionary history and potential distribution of an endemic shrub in the dry-hot valleys of southwestern China, focusing on the effects of tectonic and climatic processes on plant phylogeography. The results revealed a continuous influence of tectonic and climatic processes on the evolution and distribution of plant species in the region, providing insights into the origin of biodiversity and endemism.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Environmental Sciences
Qiankun Guo, Ronghua Zhong, Zhijie Shan, Xingwu Duan
Summary: This study analyzed the changes in vegetation cover and the effects of precipitation in the dry valleys of Southwest China from 2000 to 2020. The results showed significant decreasing trends in vegetation cover in the dry-hot valleys and dry-warm valleys, mainly due to decreased precipitation, while significant increasing trends were observed in the dry-temperate valleys due to increased precipitation. The study also highlighted the impact of anthropogenic activities on vegetation cover in the dry valleys.
Article
Geosciences, Multidisciplinary
Long Sun, Ranhao Sun, Liding Chen, Tao Sun
Summary: The construction of giant reservoirs can affect soil nutrient recycling, but the effects are often masked by other factors. This study shows that reservoir impoundment does alter soil nutrients, and the hot-dry valleys are an ideal area to study this effect. Soil organic matter, available nitrogen, and available phosphorus are sensitive indicators of the reservoir impoundment effects.
Article
Biodiversity Conservation
Yuqian Ma, Congjia Li, Jie Jin, Chengfei Liao, Jing Yang, Weibang Sun
Summary: Firmiana major, a dominant tree species in hot, arid valleys in southwest China, has experienced a sharp decline in population due to human disturbance. However, through genetic and distribution studies, it was found that there are four genetic groups of F. major, with divergence times coinciding with warming periods during the last glacial stage. The species is mainly distributed in narrow habitats, which adds to its endangered situation.
GLOBAL ECOLOGY AND CONSERVATION
(2022)
Article
Forestry
Zhixue He, Jun Luo, Bin Zhang, Lei Wang, Hui Liu, Xueyang Ma, Tianxiang Yue
Summary: Fire is a common natural disturbance in forest ecosystems and has a significant impact on vegetation patterns. This study used the spatial sequence method to investigate the natural recovery process of vegetation after a forest fire. The results showed that there were seven community types in the early stage of recovery, and the classification and distribution patterns varied with altitude. Detrended correspondence analysis and detrended canonical correspondence analysis were effective methods to classify vegetation and analyze the relationships between species and environmental factors.
Article
Environmental Sciences
Tiago Ermitao, Celia M. Gouveia, Ana Bastos, Ana C. Russo
Summary: This study focuses on the impact of hot and dry events on vegetation productivity in the Mediterranean region, using remote sensing products to assess vegetative stress and evaluating the influence of temperature and soil water availability on stressed vegetation. Results show that the 2005 episode in the Iberian Peninsula had a significant negative impact on vegetation productivity, with land-atmosphere coupling playing a key role. Recovery of affected vegetation productivity varied across events, ranging from months to years.
Article
Remote Sensing
Mark R. Salvatore, John E. Barrett, Schuyler R. Borges, Sarah N. Power, Lee F. Stanish, Eric R. Sokol, Michael N. Gooseff
Summary: The study estimated the abundance of photosynthetically active biomass in Canada Stream in Taylor Valley, MDV, Antarctica using field studies and remote sensing data. The results suggest a significant amount of photosynthetically active carbon present in the system, paving the way for understanding ecological drivers and environmental responses in this cold desert landscape.
INTERNATIONAL JOURNAL OF REMOTE SENSING
(2021)
Article
Biochemistry & Molecular Biology
Zeng-Yuan Wu, Richard I. Milne, Jie Liu, Ferry Slik, Yan Yu, Ya-Huang Luo, Alexandre K. Monro, Wan-Ting Wang, Hong Wang, Paul J. A. Kessler, Marc W. Cadotte, Ran Nathan, De-Zhu Li
Summary: Based on the study of the widely distributed genus Oreocnide in Southeast Asia, this research reveals that the plants originated in mainland East Asia and began to diversify around 6.06 Ma. Furthermore, it suggests that immigration from the mainland played a greater role in the assembly of biotic communities in the region than previously thought. The study also indicates that climatic changes, rather than geological events, were the likely drivers of diversification, especially during the intensification of the East Asian monsoons and Pleistocene climate and sea level fluctuations.
MOLECULAR PHYLOGENETICS AND EVOLUTION
(2022)
Article
Geosciences, Multidisciplinary
Dario Dantas do Amaral, Dilce de Fatima Rossetti, Ely Simone Cajueiro Gurgel, Jorge Luis Gavina Pereira
Summary: The origin and development of Amazonian vegetation is influenced by the growth of the Andes and glacial/interglacial fluctuations in the Pleistocene. Changes in lithology and deposition history may also play a key role. However, further investigation is needed due to the scarcity and complexity of available data. The Maraj 'o island provides a unique opportunity to study the relationship between geological processes and vegetation patterns in the Amazonia.
Article
Energy & Fuels
Jie Yang, Suping Peng, Jingtao Zhao
Summary: In order to ensure the safe development and utilization of hot dry rock resources, understanding the distribution characteristics of underground faults is crucial. However, commonly used reflection attribute analysis methods have low resolution, and diffraction attribute analysis methods are influenced by multiple solutions. Moreover, both methods heavily rely on interpreters' experience and are time-consuming. Therefore, a 27-layer convolution diffraction attribute fusion model (DAF-U-Net) based on the classical U-Net model is proposed. The DAF-U-Net network takes four-channel diffracted attributes as input and output underground fracture distributions. The addition of spatial attention and channel attention mechanisms improves the U-Net model's ability to locate and extract the attribute characteristics of diffractions. By optimizing the diffraction attributes of hot dry rock slices in the Gonghe basin, Qinghai, and training the model on these slices, the DAF-U-Net network demonstrates high reliability in predicting fracture distributions, providing valuable references for future exploitation of hot dry rock.
Article
Environmental Sciences
Tiago Ermitao, Celia M. Gouveia, Ana Bastos, Ana C. Russo
Summary: Wildfires pose a serious threat to ecosystems and human populations. A study in Portugal found that spring meteorological conditions, such as higher temperatures and water availability, can increase the risk of summer wildfires and their intensity through their influence on fuel accumulation and dryness. This highlights the importance of fuel management in fire-prone regions and suggests it as an effective measure to mitigate extreme fire seasons in the future.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Geography, Physical
Ziquan Zuo, Yuli He, Jun Luo, Lei Wang, Qingchun Deng, Hui Liu, Ying Zhao, Bin Zhang
Summary: This study used high-resolution remote sensing image data to analyze the spatial distribution of gullies, and quantified the correlation between gully distribution and lithologic-geomorphic types using correlation analysis and geographic information technology. The results showed that gully spatial distribution is characterized by clustering and is influenced by lithologic-geomorphic types. The study helps to better understand the distribution pattern and formation mechanism of gullies at a regional scale and provides a scientific reference for regional gully management.
Article
Multidisciplinary Sciences
Anna Seidl, Karin Tremetsberger, Simon Pfanzelt, Frank R. Blattner, Barbara Neuffer, Nikolai Friesen, Herbert Hurka, Alexander Shmakov, Oyuntsetseg Batlai, Anze Zerdoner Calasan, Polina V. Vesselova, Karl-Georg Bernhardt
Summary: Steppes are a major biome characterized by treeless extra-tropical vegetation. The formation of the Eurasian steppe belt began in Central Asia during the Neogene, with steppe displacing forest vegetation in glacial stages and recolonizing during warmer periods. Krascheninnikovia ceratoides, a characteristic plant of dry steppe and semi-desert formations, originated in Central Asia and diversified in different regions, with distinct genetic populations in Europe, North America, and Central Asia.
SCIENTIFIC REPORTS
(2021)