Sand cushion is often used to be arranged on the top of shed tunnel structure to protect highway and railway from rockfall. In order to improve the impact energy, thick cushion is often used, which increases the construction cost. In this study, geogrid is used as reinforcement material to improve the impact resistance of sand cushion without increasing the thickness of sand layer. In order to study the effects of different grid reinforcement positions and layers on the impact performance, indoor impact tests were carried out. The test results show that the geogrid with reinforcement in the appropriate position can reduce the impact force, disperse the impact stress in the sand layer, reduce the vibration of the plate and increase the impact time. In this test, the position where the sand cushion is one-third away from the bottom is the optimal reinforcement position. At the same time, the grid should be a certain distance from the top surface of the sand layer to ensure a certain energy absorption capacity. When the thickness of sand cushion is thin, the multi-layer geogrid reinforced sand cushion should be used carefully. The data content includes: rockfall impact force, impact stress at the bottom of sand cushion, and deformation of bottom plate of sand cushion. The impact force is obtained by multiplying the acceleration and mass collected by the acceleration sensor; The impact stress is obtained by the stress sensor; The deformation of the plate is obtained by the acceleration sensor at the bottom of the plate.
JIANG Qinghui
This data is mainly the data collection of mechanical properties of anti slide pile structure, including bearing capacity, displacement, strain of reinforcement and steel strand, and monitoring of prestress, which is used to analyze various performance indexes of bending and shear resistance of the structure and optimize the structural design; This experiment is mainly completed by scaling the anti slide pile components and loading them with MTS machine for four point bending. The data are collected by static strain acquisition instrument based on force sensor, displacement gauge, strain gauge, optical fiber monitoring and anchor cable dynamometer. Due to the effect of end iron block on the dispersion of prestress transmission, The change of prestress in the whole process of loading has not been completely monitored, and the other data have been analyzed and processed to obtain the corresponding law. The corresponding laws can be obtained by sorting and analyzing the data, which provides some design basis for the application of this kind of prestressed steel strand anti slide pile.
JIANG Qinghui
The scientific data of target monitoring based on visible light comes from the application demonstration sites of Julong ditch and kadacun ditch and the prototype research and development site. It is collected by Haikang camera equipment. The main content of the data is to monitor the dumping of targets and personnel shielding on site, It is used to test the on-site algorithm software - the communication between the visible light based debris flow monitoring system and the host computer software of the visible light system, and whether the data reporting is normal under the conditions of target dumping alarm, shielding target alarm and shielding target unblocking, and the data can provide a data basis for subsequent algorithm research without re collection. Data is raw video data without processing, which can be used for AI intelligent analysis technology research.
HU Yuyu
The animal and plant remains unearthed from archaeological sites are important materials to understand and understand the relationship between ancient humans and animals and plants, restore the ancient human lifestyle and economic basis, and reveal the development process and dynamic mechanism of human culture. Systematic animal Archaeology and plant archaeology analysis were carried out on the jijunbu site in the early Holocene and the Zongri site in the middle and late Holocene in the northeast of the Qinghai Tibet Plateau. The analysis of 11 animal fossils in jijunbu showed that ancient humans in the northeast of the Qinghai Tibet Plateau mainly hunted large and medium herbivorous mammals during the last interglacial period. The charcoal analysis results of Zongri site show that the ancestors of Zongri site widely collected the surrounding spruce, poplar and seabuckthorn as fuel.
DONG Guanghui , ZHANG Dongju
The data includes ecological policy documents after 1979, involving laws, regulations, terms and schemes on Ecological Governance and ecological management at the national and local government levels. The data combed the evolution process of the country in ecological and environmental governance, as well as the environmental strategies established in different development periods. The research group collected various documents of ecological policies on the government's official website and local yearbooks every year from 2018 to 2021. In order to ensure the relative integrity and pertinence of the data, this study sorted and selected the policy texts according to the following principles: ① the main sources of policies are the government's official website and its subordinate departments; ② Documents in line with ecological policies; ③ Select laws and regulations, plans, opinions, methods, detailed rules, regulations, announcements, notices, resolutions and other documents reflecting ecological environment policies. Construct the categories of the policy documents studied, that is, determine the perspective of analyzing the policy text, and define the primary and secondary categories, so that the chief coder and sub coder can understand it uniformly; ② Code the policies one by one after preparing the coding table according to the main category, that is, after carefully reading the policy content, if its content meets the analysis dimension required by the category construction table, fill its code into the coding table; ③ The data of this study is based on the official website and field policy research, which can effectively distinguish the contents of categories involved in the policy text. Therefore, the content analysis of this study has a good level of validity The innovation and evolution of policies change the impact of human activities on the environment to a certain extent, and the guidance and impact of ecological policies on environmentally vulnerable areas are more obvious. If we can fully grasp the dynamic change process of ecological policies and understand the evolution law of ecological policies, we can formulate ecological policies conducive to improving the environment, This paper studies the evolution law of Qilian mountain ecological policy issued since 1979 by using the content analysis method, in order to provide a scientific basis for the formulation of Qilian mountain ecological policy
DING Wenguang , XIE Shuntao
To understand the potential impact of projected climate changes on the vulnerable agriculture in Central Asia (CA) in the future, six agroclimatic indicators are calculated based on the 9km-resolution dynamical downscaled results of three different global climate models and a high-resolution projection dataset of agroclimatic indicators over CA is produced. These indicators are growing season length (GSL, days), biologically effective degree days (BEDD, ℃), frost days (FD, days), summer days (SU, days), warm spell duration index (WSDI, days), and tropical nights (TR, days). The periods are 1986-2005 and 2031-2050. The spatial resolution is 0.1°. As all the indicators except WSDI are defined with absolute temperature thresholds and particularly sensitive to the systematics biases in the model data, the quantile mapping (QM) method is applied to correct the simulated temperature. Results show the QM method largely reduces the biases in all the indicators. GSL, SU, WSDI, and TR will significantly increase over CA and FD will decrease. However, changes in BEDD are spatially heterogeneous, with the increases in northern CA and the mountainous areas and decreases in the southern and middle part of the plain areas. This dataset can be applied for assessing the future risks in the local agriculture for climate changes and will be beneficial to adaption and mitigation actions for food security in this region.
QIU Yuan QIU Yuan
Ecosystem productivity resilience reflects the level of ecosystem productivity resilience in the countries along the Belt and Road, with higher values indicating greater ecosystem productivity resilience in the countries along the Belt and Road. Ecosystem productivity resilience data were prepared with reference to the global medium resolution vegetation gross primary productivity dataset from 2000-2015, with a spatial resolution of 0.05° and a temporal resolution of 1 year. The products were prepared based on sensitivity and adaptability analysis, using year-by-year data on total primary productivity of vegetation in the countries along the Belt and Road from 2000 to 2015, and through comprehensive diagnostics to generate ecosystem productivity resilience products.
XU Xinliang
Based on the distribution locations of the Qinghai toad-headed lizard (Phrynocephalus vlangalii) collected by field investigation and literature investigation, combined with five climate factors from WorldClim database, the current (1960-1990) and future (2061-2080) climate data were input into the trained species distribution model to predict the current and future suitable habitats. The prediction results shows that the lizard will lose a lot of original habitats under the climate change, and the protection measures for the lizard species should focus on the eastern margin of Qinghai-Tibet Plateau, the northern and eastern parts of Qaidam Basin. The model also predicts that after the climate change, new suitable habitats will appear in areas that were not suitable for the Qinghai toad-headed lizard. However, due to the very limited diffusion ability of reptiles (the maximum annual diffusion distance recorded in the literature is less than 500m), the newly emerging suitable habitats may not be used by the Qinghai toad-headed lizard. Meanwhile, based on the physiological, life history, behavior and morphological data of three altitudinal populations of the Qinghai toad-headed lizard collected by field work, and combined with microclimate data, the physiological consequences of climate change on the Qinghai toad-headed lizard in the current suitable distribution area were predicted by using the mechanism niche model. The prediction results of the model show that, whether in the SSP245 or SSP585 climate change scenarios, the activity time of the lizard will increase in most areas (> 93%) of the current suitable distribution area, and the thermal safety threshold will decrease in all places of the current suitable distribution area. The increase of activity time of high-altitude populations is less than that of low-altitude populations, but the decrease of thermal safety threshold is greater than that of low-altitude populations. The results reveal that climate change may have a greater impact on lizard populations in high altitude areas.
ZENG Zhigao
1) Data content: the value data set of ecological assets of Qinghai Tibet plateau for five periods from 2000 to 2020, once every five years. The contents include Water Yield, Soil Retention, Carbon Fixation, Climate Regulation, and Biodiversity potential ecological asset flows. 2) Data source and processing method: Based on land use data products. See the description document for the processing method. 3) Data quality description: the data from 2000 to 2015 evaluate the land use data products released by ourselves, and the data in 2020 is the predicted value of land use data products. 4) Results and prospects of data application: provide spatial location guidance for the optimization of ecological security barrier and the management of natural resources and assets on the Qinghai Tibet Plateau.
LIU Yanxu
Based on the historical daily maximum temperature data and reanalysis data set of stations, a daily maximum temperature statistical downscaling model based on first-order autoregressive and multiple linear regression models is developed. Driven by the IPCC cmip6 scenario data of the global climate model (cnrm-cm6-1), the statistical downscaling model predicts the number of five heat wave indexes (heat wave events) of 65 stations in Central Asia from 2015 to 2100 (HWM), heat wave frequency (HWF), heat wave intensity (HWM), maximum duration of heat wave (HWD), heat wave amplitude (HWA)). Finally, the heat wave change scenario data sets of 65 stations in Central Asia under four emission scenarios (ssp126, ssp245, ssp370, ssp585) from 2015 to 2100 were obtained.
FAN Lijun
Rainfall erosivity is one of the important basic data to quantify soil erosion in the Tibet Plateau. High precision rainfall erosivity data is the key to understand the current situation of soil and water loss in theTibet Plateau and formulate soil and water conservation measures. Meanwhile, it can provide a powerful reference for the prevention and control of geological disasters in the Tibet Plateau. Based on the 1-min dense precipitation observations and the grid precipitation product, a new annual rainfall erosivity dataset in Tibet Plateau from 1950 to 2020 is constructed through the steps of correction, reconstruction and validation. This dataset is the rainfall erosivity data set with the highest accuracy and the longest time series in the Tibet Plateau.
CHEN Yueli
This data set includes a small vertebrate detection system and trigger sensor data set deployed in Heshan hilly comprehensive test station of Chinese Academy of Sciences. The system is deployed in Heshan hilly comprehensive test station Park (112 ° 53'58 "E, 22 ° 40'39" n), with a time span (November 2019-may 2021). The system consists of a flexible pressure sensor array (25cm * 25cm), a scanning circuit, a controller, a control system unit based on a mobile phone board, that is, a smart camera (driven by the trigger signal output by the pressure sensor, the camera is controlled to automatically take pictures, record and record, and upload data). A total of 72 valid and non repetitive animal photos were collected by the system. 1. Small wild animals in the installation site of Heshan hilly comprehensive test station of Chinese Academy of Sciences. When wild animals appear on the flexible pressure sensor, the acquisition is triggered once. 2. Data source: "development of terrestrial vertebrate monitoring equipment", 2016yfc0500104, completed by: Chengdu Institute of biology, Chinese Academy of Sciences, raw data, unprocessed. 3. Photo data can be divided into motion trigger and static pressure trigger. The former requires the moving distance of the animal on the flexible pressure sensor to be greater than the set threshold to prevent repeated trigger when the animal is stationary; the latter refers to that the animal generates pressure on the flexible pressure sensor, that is, it is triggered all the time. This data set is the data in motion trigger mode. 4. This data can be used to record the population number of small wild animals in a certain area (similar to the sensing trap method). Combined with the relevant data of ecological factors, it can be used to analyze the population number and circadian rhythm of small wild animals.
FANG Guangzhan
The data includes: zooplankton species list; zooplankton density; microscopy; high-throughput sequencing; complete data; constructing an original data set for lakes on the Qinghai-Tibet Plateau. Zooplankton is an indispensable link in lake water ecological investigation, and it is a link between the system The location of the food web is an important carrier for the material circulation and energy flow of the food web. The systematic investigation and study of the composition and biodiversity of the zooplankton in the lakes on the Qinghai-Tibet Plateau is particularly important for understanding the stability and resilience of the lake ecosystem on the Qinghai-Tibet Plateau. In addition, Zooplankton are very sensitive to environmental changes, and changes in their structure and functional groups can indicate the intensity and magnitude of environmental pressure.
LI Yun
The Third Pole 1:100,000 settlements distribution data set：Settlements（Tibet_Cities)、Capitals（Tibet_Capitals）、Cities up to 75K（Tibet_Cities_up_to_75K）vector space data set and its attribute name：Cities Name(ENG_NAME)、 urban population（CITY_POP) The data comes from the 1:100,000 ADC_WorldMap global data set，The data through topology, warehousing and other data quality inspection，Data through the topology, into the library，It's comprehensive, up-to-date and seamless geodigital data. The world map coordinate system is latitude and longitude, D_WGS_1984 datum surface
ADC WorldMap
The 1:1,000,000 Antarctic settlements data set includes vector spatial data of Antarctic settlements and its related attributes：City name (ENG_NAME), city population (CNTEY_NAME), (CNTRY_CODE), etc. The data comes from the 1:100,000 ADC_WorldMap global data set，The data through topology, warehousing and other data quality inspection，Data through the topology, into the library，It's comprehensive, up-to-date and seamless geodigital data. The world map coordinate system is latitude and longitude, WGS84 datum surface，Antarctic specific projection parameters（South_Pole_Stereographic）.
ADC WorldMap
The data set of 1:100,000 settlements in the Arctic includes all settlements in the North Pole (Arctic_Resident), capital settlements (Arctic_Capitals), Cities_up_to_75K settlements and other vector spatial data and related attribute data: urban name (ENG_NAME), CITY_POP and other properties. The data comes from the 1:100,000 ADC_WorldMap global data set，The data through topology, warehousing and other data quality inspection，It's most comprehensive, current and seamless geographic digital data for the whole earth. The world map coordinate system is latitude and longitude, WGS84 datum surface，Arctic specific projection parameters（North_Pole_Stereographic）.
ADC WorldMap
Qinghai Lake is the largest inland salt water lake in China, which is located in the northeast of Qinghai Tibet Plateau. Its unique natural ecological environment and biodiversity are of great significance in the western development and ecological construction. The data is the distribution data of residential areas in the Qinghai Lake Basin, including the distribution of cities, counties, towns and villages in the Qaidam River Basin. The data mainly has two attribute fields: Code (residential area code) and name (residential area name). Collect and sort out the basic, meteorological, topographical and geomorphological data of Qinghai Lake Basin, and provide data support for ecological management of Qinghai Lake Basin.
National Basic Geographic Information Center
The data is the distribution data of the settlements in the Tarim River Basin, mainly including the distribution of cities, counties, towns, and villages in the Tarim River Basin. The data mainly has two attribute fields: Code (settlement code), Name (settlement name)
National Basic Geographic Information Center
The data is the resident site distribution dataset of the north slope of Tianshan River Basin, including the hierarchical distribution of cities, counties, towns and villages at the north slope of Tianshan River Basin. The data mainly has two attribute fields: Code (residential area code) and Name (residential area name).
National Basic Geographic Information Center
The data is the distribution data of residential areas in the chaidamu river basin, including the distribution of cities, counties, towns and villages in the chaidamu river basin. The data mainly has two attribute fields: Code (residential area Code) and Name (residential area Name).
National Basic Geographic Information Center
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