Automatically translated preprints from the Chinese arXiv (ChinaXiv).
Showing 50 of 224 papers in Earth & Space
Developing agricultural socialized services constitutes an important component of agricultural modernization construction. Under the "dual security" framework for grain and ecology, investigating its contribution to grain ecological efficiency holds significant importance for achieving sustainable a…
Evapotranspiration, as a critical component of the water cycle, is essential for water resource regulation and ecological protection, playing a particularly important role in water consumption and redistribution in arid regions. This study takes the Aksu River Basin as the research area, utilizing M…
Ammopiptanthus nanus is an endangered evergreen shrub endemic to the desert regions of Central Asia, possessing extremely strong cold and drought resistance. It serves as a model species for investigating plant adaptation mechanisms to extreme environments and is a key focus of research on desert bi…
Constructing ecological security patterns and accurately identifying key areas for ecological restoration constitute the prerequisite and guarantee for advancing territorial ecological restoration. As a national key water source conservation area and an ecological security barrier in the upper reach…
Salinization in downstream irrigation districts of arid region river basins exacerbates soil degradation, crop yield reduction, and river water salinization, constraining the stability of agricultural production and ecological environments. Its formation is influenced by groundwater depth and improp…
Against the backdrop of gradually decreasing global atmospheric nitrogen deposition, the legacy effects of long-term nitrogen addition on alpine grassland ecosystems remain unclear. Therefore, this study conducted a 16-year controlled experiment in the Bayanbulak alpine grassland in the central Tian…
To investigate the mineralization characteristics of organic fertilizer combined with medium and trace elements in aeolian sandy soil and its effects on soil organic carbon fractions, laboratory incubation and field experiments were conducted to examine the decomposition and residual rates of organi…
In recent years, the dangerous pest Agrilus viduus Kerremans has been discovered in Yili, Xinjiang. Currently, this insect has penetrated into the hinterland of wild fruit forests, causing damage to wild apples and wild apricots. Through field surveys, fixed-point observations, and indoor rearing, t…
Sand ridges, as the fundamental topographic units of deserts, have surface hydrothermal environments at different slope positions that profoundly influence the development and spatial distribution patterns of biological soil crusts. Lichen crusts are widely distributed on desert surfaces; however, h…
Invasive plants have severely impacted global ecosystem functions and biodiversity. However, existing research primarily focuses on the monitoring and classification of single temporal phases of plants, with relatively few studies on multi-temporal continuous monitoring of key phenological stages, p…
The sandy lands in the marginal monsoon region of Northeast China are sensitive to climate change and represent ideal sites for investigating the history of aeolian evolution. This study conducted optically stimulated luminescence (OSL) dating analysis of two typical aeolian sediment sections from t…
Water supply services underpin the survival and development of human society and are critical for advancing ecological civilization construction and high-quality development of river basins in China. This study takes the Yili River Valley in Xinjiang as the research area, and based on statistical ye…
High-boron surface water and groundwater exist in the oasis area of Qiemao County, Xinjiang, seriously affecting residents' health. To preliminarily investigate the hydrochemical characteristics and main sources of boron in the oasis area of Qiemao County, 24 water samples (4 surface water and 20 gr…
Investigating the quantitative predictive assessment of climate impacts on vegetation greenness changes in the Qaidam Basin facilitates the coordinated promotion of integrated protection and systematic governance of mountains, rivers, forests, farmlands, lakes, grasslands, deserts, and atmosphere. B…
The Precipitation Concentration Index (PCI) effectively characterizes the intra-annual concentration of precipitation and is widely used in related research. Based on monthly precipitation and mean temperature observations from 15 meteorological stations in the Yarlung Tsangpo River (hereinafter ref…
Farmland in arid regions with sandy loam soil is characterized by low fertility, poor water retention, high infiltration losses, and low crop yields. Elucidating the patterns of soil water movement in sandy loam farmland is of great significance for conserving water resources and increasing crop yie…
Using MODIS snow product data, this study investigated the spatiotemporal variation characteristics of the snowmelt period on the Mongolian Plateau from 2003 to 2022, and tracked the movement of the snowmelt line toward higher latitudes at 15-day intervals as well as its response to air temperature.…
Daily precipitation data from ground meteorological stations across the eastern Tibetan Plateau in 2022 were selected to evaluate precipitation datasets from the China Meteorological Administration Multi-source Precipitation Analysis System (CMPAS), the China Meteorological Administration Land Data …
Litter decomposition plays a crucial role in carbon and nutrient cycling within terrestrial ecosystems, with climatic conditions being the primary determinant of decomposition rates. Currently, research on litter decomposition in alpine grassland ecosystems remains insufficient. To investigate the i…
Understanding how different vegetation-based restoration practices alter soil chemical and microbial characteristics is crucial, as restoration practices influence phosphorus (P) transformation and fractions and modify P adsorption behavior during the restoration process of degraded land. This study…
Artificial cyanobacteria crusts are formed by inoculating soil with cyanobacteria. These crusts help prevent soil erosion and restore soil functionality in degraded croplands. However, how fast the artificial cyanobacteria crusts can be formed is a key issue before their practical application. In ad…
Given that Xinjiang Uygur Autonomous Region of China possesses exceptionally abundant solar radiation resources that can be harnessed to develop clean energy, accurately characterizing their spatiotemporal distribution is crucial. This study investigated the applicability of the Clouds and the Earth…
In the context of population aging and the Healthy China Strategy, the rational allocation of urban medical facilities is of great significance for improving the health level and well-being of the elderly population. Based on multi-source data including the Seventh National Population Census, Points…
To investigate the degree and manner of mutual influence between land use multifunctionality and multidimensional relative poverty, and to clarify their spatiotemporal coupling relationship, this study focuses on the Gansu section of the Liupan Mountain area, constructs a coupling coordination model…
Gradually achieving common prosperity represents both the pathway and objective of Chinese-style modernization, and counties, as the fundamental units of urban-rural integrated development, hold significant importance for advancing common prosperity. Based on panel data for Ningxia counties from 200…
Promoting high-quality urbanization development in the Yellow River "Ji" character bend metropolitan area constitutes crucial support for establishing a growth pole in the Yellow River basin. This study examines 15 prefecture-level cities within this metropolitan area, constructing an evaluation ind…
Based on three dimensions of population, economy, and space, this study identifies county-level shrinkage types in the farming-pastoral ecotone of northern China from 2000 to 2020 using a shrinkage degree model and multi-index comprehensive evaluation method, and simultaneously employs a Multiscale …
Based on the six-element theory of tourism and utilizing Points of Interest (POI) data from county-level regions in Inner Mongolia, this study examines the spatial distribution characteristics and influencing factors of tourism elements in Inner Mongolia's counties in 2023 through methods including …
Based on the tourism "six elements" theory, applying nearest neighbor index, kernel density analysis, bivariate spatial autocorrelation, Ripley's K function and other spatial analysis methods, an analysis was conducted on the spatial distribution and correlation characteristics of tourism element po…
As the ninth largest industrial cluster in Xinjiang, high-quality development of the tourism economy serves as a leading driver for Xinjiang's modernization. Based on three perspectives—quality, efficiency, and tourist experience—a seven-dimensional measurement system for high-quality tourism econom…
Research on the spatiotemporal evolution of habitat quality in the Tongwei landslide area is of great significance for the ecological sustainable development of Tongwei County and similar regions in Northwest China. First, the Patch-generating Land Use Simulation (PLUS) model was employed to predict…
The Shanxi section of the Yellow River Basin represents a critical ecological barrier zone in China, where forecasting future trade-offs and synergies among ecosystem services is essential for optimized ecosystem management. Accordingly, this study employed system dynamics, a patch-level land use ch…
Natural climate solutions represent a critical strategy for climate change mitigation in the land sector, offering substantial potential for enhancing carbon storage and reducing greenhouse gas emissions. Using a simple empirical model, we quantified the historical carbon sequestration contributions…
Agricultural water pollution management is crucial for alleviating water resource crises and promoting regional sustainable development. Using agricultural grey water footprint intensity (AGWFI), which comprehensively considers both agricultural grey water footprint and economic development level, t…
Plant water use efficiency (WUE) reflects the balance between carbon fixation capacity and water consumption, revealing plant strategies for environmental adaptation. This study examined three pioneer tree species (Pinus tabuliformis, Ulmus pumila, and Robinia pseudoacacia) in reclaimed ecosystems o…
Based on remote sensing and GIS techniques, we obtained the spatiotemporal distribution characteristics of glacier changes and glacier disasters in areas along the China-Tajikistan highway from 2000 to 2021, and conducted an exposure assessment of glacier disasters using the range transformation met…
Under the trend of global warming, extreme climate events have become increasingly frequent on the Loess Plateau. Clarifying the spatiotemporal characteristics of extreme precipitation events is of great significance for regional disaster prevention. Based on daily precipitation data from 111 meteor…
Based on daily temperature data from 38 meteorological stations in Tibet from 1981 to 2023, the new seasonal division method for Tibet is adopted to delineate the four seasons, and the regional variations of climatic seasons, spatiotemporal changes of seasonal onset dates, and seasonal variation tre…
The efficient operation of automated astronomical data processing pipelines relies on precise calibration reference data recommendation mechanisms. Consequently, comprehensive calibration reference data systems have emerged. This paper systematically reviews the calibration reference data recommenda…
During operation, ground-based laser interferometric gravitational wave detectors experience uncontrollable displacements in their internal optical systems due to various noise disturbances. To improve detector sensitivity and enable detection of weak gravitational wave signals, length sensing and c…
In recent years, China has achieved breakthrough progress in the development of infrared detectors. To meet the requirements of astronomical observation, comprehensive testing of all performance metrics relevant to astronomical detection has been conducted on this infrared detector, obtaining import…
The drive motors of radio telescope servo systems exhibit speed mismatch during operation, which, as telescope aperture increases and precision improves, severely impacts the high-precision pointing and tracking control of large-aperture radio telescopes. To reduce speed deviation during servo syste…
As one of the important methods for probing the cosmic reionization epoch, the core objective of low-frequency all-sky total-power experiments is to search for the extremely weak neutral hydrogen 21 cm signal from the cosmic reionization epoch in the all-sky total-power spectrum within the frequency…
High-amplitude delta Scuti variable stars (HADS) are a subclass of delta Scuti pulsating variables, characterized by short pulsation periods, large amplitudes, and single or multiple radial pulsation modes, making them important targets for asteroseismic studies. Using time-series photometric data p…
To date, a total of 72 black hole X-ray transients and their candidates have been detected, of which 19 have received dynamical confirmation. These transients are X-ray binary systems composed of stellar-mass black holes and low-mass stars. Measurements of the fundamental parameters of stellar-mass …
Outflows represent a crucial form of quasar feedback, playing a significant role in understanding the co-evolution of quasars and their host galaxies. We have collected relevant literature on velocity drifts in quasar outflow absorption lines, compiled case data, and conducted comparative analyses o…
Galaxy clusters, as the largest self-gravitating bound systems in the universe, serve not only as laboratories for studying galaxy formation and evolution, but also as precise tracers of the large-scale structure of the universe. This work primarily introduces the observational characteristics, phys…
Mantle convection is a crucial internal process in the evolution of terrestrial planets. This study summarizes the latest research advances on mantle convection in solar system terrestrial planets and large satellites, employing a comparative planetology methodology to address three fundamental ques…
We present a detailed review of the perihelion observational data and near-Earth observation events of active asteroid (3200) Phaethon, analyzing the activity mechanisms near perihelion, particularly those driven by thermal fracturing, water ice, and sodium sublimation. Based on investigations of Ph…
Using high-sensitivity, high-resolution mapping observations of the 12CO (J = 1–0, J is the angular momentum quantum number) molecular line obtained with the 13.7 m millimeter-wave telescope at the Purple Mountain Observatory Qinghai Station, extremely high-velocity gas with a total velocity width o…
