The Second Tibetan Plateau Scientific Expedition (STEP) program

Brief Introduction: Second Tibetan Plateau Scientific Expedition Program

Number of Datasets: 304

  • Livestock carrying state estimation product in Qinghai-Tibet Plateau (2000-2019)

    Livestock carrying state estimation product in Qinghai-Tibet Plateau (2000-2019)

    Carrying capacity refers to the carrying capacity of grassland calculated by actual carrying capacity and reasonable carrying capacity, that is, all overloading, balanced and non overloading. This data set includes two products: Grassland carrying capacity pressure index and grassland livestock balance index. Grassland carrying capacity pressure index = actual carrying capacity / reasonable carrying capacity, and grassland livestock balance index = (actual carrying capacity - reasonable carrying capacity) × 100% / reasonable carrying capacity, the actual carrying capacity data comes from the Qinghai Tibet Plateau actual carrying capacity data set (2000-2019), and the reasonable carrying capacity data comes from the Qinghai Tibet Plateau reasonable carrying capacity data set (2000-2019). This data set can analyze the temporal and spatial variation characteristics of livestock carrying status in the Qinghai Tibet Plateau, extract overgrazing areas, and evaluate the overload intensity of the Qinghai Tibet Plateau, which has important application value for ecological protection, monitoring and early warning of the Qinghai Tibet Plateau.

    2021-06-17 124 0

  • Statistics of rural hydropower stations in Tibet in 2018

    Statistics of rural hydropower stations in Tibet in 2018

    This data set is the summary of the survey results of rural small hydropower in Tibet in 2018. The main contents include the name, installed capacity, start-up time and completion time of small hydropower stations in different districts and counties of each prefecture and city in Tibet Autonomous Region, as well as the operation status of each hydropower station. The hydropower development in Tibet Autonomous Region has an early history. There are not many large and medium-sized hydropower stations, mainly in rural areas. With the development of social economy, most of the small hydropower stations in Tibet Autonomous Region have been shut down. At present, the development of large and medium-sized hydropower projects is the main one. In plateau areas where Hydropower Survey data are scarce, this data set reflects the history and current situation of small hydropower in Tibet Autonomous Region, and can provide a certain data basis for hydropower development survey and evaluation in Tibet Autonomous Region.

    2021-06-17 256 0

  • Typical land use types and typical slope soil data in Hongyuan County, Qinghai-Tibet Plateau (2019)

    Typical land use types and typical slope soil data in Hongyuan County, Qinghai-Tibet Plateau (2019)

    From July to August 2019, take Hongyuan County on the Qinghai-Tibet Plateau as the scientific research site, select typical land use types of grassland and typical slopes to set up transects. After plant sample surveys, the soil profiles of grassland, shrubs, and wetland ecosystems (0-10 cm, 10-20 cm, 20-40 cm, 40-60 cm and 60-100 cm) soil samples were collected, 3 replicates for each soil layer, 104 soil samples were collected, and the soil was measured The bulk density and water content.Through the sampling of various lines to form the surface sampling points and spatial data sets of the Baihe River Basin, it simulates the spatiotemporal pattern of typical water and soil ecosystem services such as ecosystem production, carbon fixation, hydrological regulation and soil conservation, and reveals the spatiotemporal changes of water and soil ecosystem services at the basin scale Pattern, combined with factors such as climate change, socio-economic data, implementation of ecological and environmental protection policies, and land use change.

    2021-06-17 195 0

  • The 1km annual humidity index data set of Zoige Plateau (1980-2018)

    The 1km annual humidity index data set of Zoige Plateau (1980-2018)

    Collect daily meteorological data from 1980 to 2018 from the Meteorological Data Sharing Center of China Meteorological Administration. Humidity Index (HI) is calculated by the ratio of annual precipitation to potential evapotranspiration. Anusplin interpolation software is used to obtain a spatial dataset of HI 1km resolution.Through spatial data collection, model simulation of the spatiotemporal pattern of typical water and soil ecosystem services such as ecosystem production, carbon fixation, hydrological regulation, and soil conservation, revealing the spatiotemporal change pattern of water and soil ecosystem services in the watershed, combining climate change, socioeconomic data and ecological environmental protection policies Implementation, land use conversion and other factors, combined with trade-off analysis and structural equation modeling to quantify the trade-offs and synergies of these water and soil ecosystem services and their main driving forces, to provide more effective and scientific ecological protection and multi-purpose land use for Ruoergai Wetland Optimal management provides theoretical support.

    2021-06-17 207 0

  • Featured livestock survey data set of typical counties in Qinghai Tibet Plateau (2019-2020)

    Featured livestock survey data set of typical counties in Qinghai Tibet Plateau (2019-2020)

    The data set mainly includes the species, quantity, distribution characteristics, production performance data, photos and sample collection information of livestock breeds in typical counties of Qinghai Tibet Plateau. The data set provides basic data for livestock related research in Qinghai Tibet Plateau.The data mainly came from field survey and literature collection, and Excel was used for collation and analysis.To check the data, to eliminate differences, and complement the lack of data, make a good representative data.After the completion of data collection, the genetic diversity of livestock was analyzed and evaluated to provide effective basic research data for animal husbandry research in Qinghai Tibet Plateau.

    2021-06-16 97 0

  • Survey data set of characteristic forage grass in typical counties of Qinghai-Tibet Plateau (2019-2020)

    Survey data set of characteristic forage grass in typical counties of Qinghai-Tibet Plateau (2019-2020)

    The data set mainly includes the species, quantity, distribution characteristics and related characteristics of cultivated herbage, wild herbage and poisonous herbage in typical counties on the Qinghai-Tibet Plateau, as well as the survey data, photos and plant specimen collection information of natural grassland sample plots. The data set can be used to establish the relevant database of herbage in this region, which can be used to analyze the distribution and development of herbage resources in this region, and put forward the utilization and protection countermeasures. Data came from field investigation and literature collection, and Excel was used for sorting and analysis. The obtained data were checked, the data with large differences were eliminated, and the missing data were supplemented to make the data have better representativeness. The data set can be used to study the rational allocation of natural grassland and artificial grassland in Qinghai-Tibet Plateau, and to plan the rational distribution of artificial grassland.

    2021-06-16 71 0

  • Geochemical and U-Pb geochronological data set of heavy minerals in Yarlung Tsangpo River

    Geochemical and U-Pb geochronological data set of heavy minerals in Yarlung Tsangpo River

    The samples of this data set are from the modern river sand in Lhasa River and Nianchu River in Yarlung Tsangpo River Basin and Pumchu collected by Hu Xiumian research group of Nanjing University in 2016; By extracting detrital zircon, monazite, titanite and rutile from the river sand, LA-MC-ICP-MS was performed to determine the trace elements and U-Th-Pb geochronology. The above tests were conducted by professionals at the Institute of Geology and Geophysics, Chinese Academy of Sciences, Nanjing University and Trinity College, Ireland with high quality; The above data have been published in earth science review. Relative geochronological data from bedrock in these river basins were also collected for comparison.

    2021-06-16 256 6

  • Dataset of alpine wetland water body physical and chemical properties background survey (2019-2020)

    Dataset of alpine wetland water body physical and chemical properties background survey (2019-2020)

    This dataset contains the physicochemical properties and water environment indicators of typical alpine wetlands in the Selincuo and Lhasa River basins of the Tibetan Plateau. Wetland water samples were obtained through field sampling, and data on the physicochemical indicators of the water bodies were obtained through chemical analysis in the laboratory. Some indicators were measured in the field using instruments. The data analysis method meets the requirements of relevant national standards and the results are reliable. The data can be used as background data for the water environment of wetlands on the Tibetan Plateau, to assess the ecological and environmental quality of wetlands, and to study the impact of climate change on alpine wetlands.

    2021-06-16 172 0

  • Ground penetrating radar observation dataset of typical wetland in Namucuo (2019-2020)

    Ground penetrating radar observation dataset of typical wetland in Namucuo (2019-2020)

    Ground-penetrating radar method is a narrow pulse broadband high-frequency electromagnetic wave signal detection of underground media distribution technology method, with fast, non-destructive, continuous detection and real-time display characteristics. The use of detection instrument is GR-IV type geological radar, and set up different power antenna, in August 2019 and August 2020 to carry out 2 years of coverage of Namucuo Niyaqu typical wetland area within the range of ground-penetrating radar observation, obtained the 2019-2020 Namucuo typical wetland ground-penetrating radar data set, and data format is raw.

    2021-06-16 141 0

  • Genesis of late Miocene laminar dolostones in Lunpola Basin, Qinghai Tibet Plateau

    Genesis of late Miocene laminar dolostones in Lunpola Basin, Qinghai Tibet Plateau

    The problem of dolomite has always been concerned by sedimentology. However, it is still impossible to form low-temperature primary dolomite without catalyst in the laboratory, so the kinetic mechanism of dolomite formation has been in doubt. Microbial induction can effectively promote the formation of primary dolomite, but its control mechanism is still unclear. At the same time, a large number of examples of microbial induction of primary dolomite are concentrated in the modern environment and laboratory conditions, and the relevant reports on deep strata are very limited. In this study, the stratiform dolostones in the late Miocene Niubao formation obtained from well Wang 1 in Lunpola Basin, central Qinghai Tibet Plateau, are taken as the research objects. The petrographic characteristics of stratiform dolostones are derived from thin section observation, the characteristics of ancient water body are derived from stable carbon and oxygen isotope analysis, and the micro scale morphology of dolostones, The spatial distribution of the minerals was observed by SEM and TEM. Mineralogical, diagenetic and isotopic analyses indicate that dolomite is a primary deposit, thus retaining a large number of original sedimentary features. The oxygen isotope values of dolomite ranged from - 3.2 to - 1.76 ‰ and the carbon isotope values ranged from - 2.62 to - 3.78 ‰. The average oxygen isotope values of reconstructed paleowaters were - 3.87 ‰, indicating that dolomite was formed in a strong evaporation environment. Laminar dolomite is composed of organic rich layer and silicate clastic layer. The dolomite is characterized by nanospheres with a diameter of about 80-100nm. In space, it can be seen that it is specifically adsorbed on the surface of organic matter film and flaky clay minerals, and has obvious characteristics of aggregation and morphological growth. This may indicate that organic matter film and flaky clay mineral surface can promote the formation of low-temperature dolomite, which is basically consistent with the results observed in the laboratory. It provides a detailed research case for revealing the formation process of primary dolomite at deep time.

    2021-06-16 202 3

  • A dataset of soil types in the central and western regions of the Qinghai-Tibet Plateau (2019)

    A dataset of soil types in the central and western regions of the Qinghai-Tibet Plateau (2019)

    Soil profiles in this dataset were surveyed in the western and central Qinghai-Tibet Plateau in July 2019, including Ali, Xigaze and Naqu of the Tibet and Kashgar and Hotan of the Xinjiang. Information on the profile ID, longitude, latitude, soil types was provided. Soil types were referenced according to the Chinese Soil Taxonomy. The Chinese Soil Taxonomy is a hierarchical system, in which 6 categories were defined: Order, Suborder, Group, Subgroup, Family and Series. The sampling location was recorded by a handheld GPS receiver. Especially, these soil types were initially determined based on the diagnostic horizons and diagnostic properties identified in field. Due to the effect of epidemic, physicochemical properties of some soil samples have not been achieved and thus some soil types need to be updated in the following months.

    2021-06-16 430 0

  • Data set of soil biological characteristics in Qinghai-Tibet Plateau (2019-2021)

    Data set of soil biological characteristics in Qinghai-Tibet Plateau (2019-2021)

    This data set contains the biological property data of soil samples from several scientific research routes in the Qinghai Tibet Plateau from 2019 to 2021, including the information of the collector, collection time, collection location, longitude and latitude, altitude, vegetation type, sampling depth, phosphatase activity, microbial respiration, nitrogen transformation characteristics, functional gene abundance, fungi, bacteria, protobiotic diversity, etc. The analysis of various soil properties refers to the requirements of "technical specification for soil environmental quality monitoring", and the first-hand data obtained through laboratory analysis. The data quality is controlled by determining blank samples, duplicate samples and standard samples. The data set can be used to evaluate soil quality and function under the influence of climate change and human activities.

    2021-06-16 190 0

  • Data of desert plant community survey in Gansu province (2018)

    Data of desert plant community survey in Gansu province (2018)

    The composition, lamellate structure, diversity and biomass of main desert plant communities in Gansu were investigated, and the density, frequency, dominance and element content of the building plants in the desert plant communities were determined, which provided basic data for the stable maintenance and protection of desert ecosystem in Gansu.This data includes species name, quantity, life form, coverage, density, height and biomass of main desert plant communities in Gansu Province.Community characteristics of 124 sites were investigated, which were divided into herb and shrub parts.At the same time, with latitude and longitude and habitat information.All data were obtained from field surveys by ecological professionals and were original data.The data quality is reliable and can be reused.

    2021-06-16 50 0

  • Major turnover of biotas across the Oligocene/Miocene boundary on the Tibetan Plateau

    Major turnover of biotas across the Oligocene/Miocene boundary on the Tibetan Plateau

    In this paper, we review evidence for a major biotic turnover across the Oligocene/Miocene in the Tibetan Plateau region. Based on the recent study of six well-preserved fossil sites from the Cenozoic Lunpola and Nima basins in the central Tibetan Plateau, we report a regional changeover from tropical/subtropical ecosystems in the Late Oligocene ecosystem (26–24 Ma) to a cooler, alpine biota of the Early Miocene (23–18 Ma). The Late Oligocene fossil biota, comprising of fish (climbing perch), insects and plants (palms), shows that the hinterland of the Tibetan Plateau was a warm lowland influenced by tropical humidity from the Indian Ocean. In the Early Miocene, the regional biota became transformed, with the evolution and diversification of the endemic primitive snow carp. Early Miocene vegetation was dominated by temperate broad-leaved forest with abundant conifers and herbs under a cool climate, and mammals included the hornless rhinoceros, Plesiaceratherium, a warm temperate taxon. This dramatic ecosystem change is due to a cooling linked to the uplift of Tibetan region, from a Late Oligocene paleo-elevation of no greater than 2300 m a.s.l. in the sedimentary basin to a paleo-elevation of about 3000 m a.s.l. Another factor was the Cenozoic global climatic deterioration toward to an ice-house world.

    2021-06-15 238 9

  • The most primitive Elasmotherium (Perissodactyla, Rhinocerotidae) from the Late Miocene of northern China

    The most primitive Elasmotherium (Perissodactyla, Rhinocerotidae) from the Late Miocene of northern China

    The most primitive Elasmotherium (Perissodactyla, Rhinocerotidae) from the Late Miocene of northern China, The origin of Elasmotherium has been a puzzle for many years. Herein, we report the earliest representative of Elasmotherium, based on a Late Miocene skull from Dingbian County in Shaanxi, northwestern China. The skull bears a unique mosaic of primitive and derived features different from all hitherto known elasmotheres, hence forth demarcated as holotype of Elasmotherium primigenium sp. nov. Dental characters of E. primigenium are more primitive than any other known species of lasmotherium, e.g. relatively incipient enamel folding, fairly weak lingual groove on the base of the protocone, relatively weaker crista, small and closed posterior valley and straight ectoloph. E. primigenium is evidently more primitive than all the known species of Elasmotherium, yet appreciably more derived than Sinotherium, thereby marking an important transitional species between Sinotherium and further species of the genus Elasmotherium.

    2021-06-15 209 3

  • A dataset of soil microbial diversity in the arid desert area of the Qilian Mountains-Hexi Corridor (2019-2020)

    A dataset of soil microbial diversity in the arid desert area of the Qilian Mountains-Hexi Corridor (2019-2020)

    The soil microbial diversity data set (2019-2020) of the arid desert area on the northern slope of the Qilian Mountains-Hexi Corridor 90 soil samples at 90 sampling points. The soil samples in this data set come from the comprehensive soil survey in the arid desert area of the northern slope of the Qilian Mountains-Hexi Corridor in 2019. The original data has been strictly checked to ensure the reliability of the data. This data set is of great significance for improving soil productivity in desert areas and realizing the sustainable use of soil resources.

    2021-06-15 158 0

  • Aerial photography dataset of typical small watersheds in Qinghai Province (2020)

    Aerial photography dataset of typical small watersheds in Qinghai Province (2020)

    The Aerial photography dataset of typical small watersheds in Qinghai Province (Aerial photography dataset of typical small watersheds in Qinghai Province) is derived from the second Qinghai-Tibet Plateau scientific investigation in July 2020, using DJI drones to conduct surveys on small watersheds in Minhe County, Qinghai Province and Qinghai Province. Aerial photography of the surface sample zone in the east of the lake, including orthophoto (including three bands of red, green and blue), multi-spectrum, and point cloud data. All files in this dataset can be directly opened, viewed and processed with ArcGIS and ENVI software.

    2021-06-15 174 0

  • Tibet statistical yearbook

    Tibet statistical yearbook

    This data set is the statistical yearbook of Tibet Autonomous Region in different years, mainly including different social and economic statistical contents. The Tibet Statistical Yearbook is mainly based on statistical charts and analysis. It records the annual economic and social development comprehensively, systematically and continuously through highly intensive statistical data. Obtaining statistical data is a necessary prerequisite for economic and social research. With the help of Tibet statistical yearbook, it can provide data support for the social and Economic Research of Tibet Autonomous Region. Due to the lack of data in the Qinghai Tibet Plateau, it is difficult to find detailed socio-economic statistics on the network platform. This data set comes from the statistical departments of the Tibet Autonomous Region, which can provide support for relevant investigation and research.

    2021-06-15 251 0

  • Hengduan Mountain Area (Sichuan-Tibet railway) natural disaster risk and comprehensive risk assessment data set (2020)

    Hengduan Mountain Area (Sichuan-Tibet railway) natural disaster risk and comprehensive risk assessment data set (2020)

    Based on China's daily ground meteorological elements data set, national geographic basic data, demographic data, and 30M resolution DEM data, statistical yearbook data, historical disaster records, and other related data, using multi-methods like PCA, random forests to calculate hazard and vulnerability indicators, based on extreme precipitation,high temperature, flood, snow hazard, collapse and landslide hazards, to build comprehensive disaster risk index, and process them with normalization. Among them, we consider all the above disaster types in Hengduan Mountain area, and flood, snow disaster, collapse and landslide disaster in sichuan-tibet railway. The natural disasters hazard map, vulnerability map and comprehensive risk map of Hengduan Mountains (Sichuan-Tibet Railway) are included in the dataset.

    2021-06-15 406 16

  • Second Comprehensive Scientific Expedition on the Tibetan Plateau

    Second Comprehensive Scientific Expedition on the Tibetan Plateau

    This set of data includes the Cenozoic biostratigraphy scientific expedition in autumn 2020, relying on the second comprehensive scientific expedition on the Tibetan Plateau Research Task 7 topic 5 "second comprehensive scientific expedition on the Tibetan Plateau, 2019qzk0705" The data content includes image material and field video material. The main shooting equipment is SLR camera, motion camera and UAV. Data is used for documentary production, paper publication and other matters. The data involves original intellectual property rights, and the user must obtain the prior consent of the copyright owner.

    2021-06-15 205 0