Thematic data - National Cryosphere Desert Data Center

Thematic data of Heihe integrated remote sensing joint experiment

"Heihe Integrated Remote Sensing Joint Experiment" is a large-scale remote sensing experiment jointly carried out by the Western Action Plan project of Chinese Academy of Sciences "Heihe Basin Remote Sensing - Ground Observation synchronous experiment and comprehensive simulation platform Construction" and the national Key Basic research and development plan project "Theory and Method of active and Passive Remote Sensing Collaborative retrieval of land surface ecological environment Elements" in China's second largest inland river basin -- Heihe River basin Check. The experiment consists of cold area hydrology experiment, forest hydrology experiment, arid area hydrology experiment and hydrometeorological experiment. It is divided into four stages: preparation period, pre-test, enhanced test and continuous observation period. The most important result of the Heihe Integrated Remote Sensing Joint Experiment is a set of multi-scale and high-quality comprehensive observation data set, which has been officially released to the public, and very strongly supports the development, improvement and validation of a series of ecological, hydrological and quantitative remote sensing models. In addition, abundant research results have been achieved in the extraction of snow parameters, microwave remote sensing of surface freeze-thaw, remote sensing inversion of forest structure parameters, evapotranspiration observation and remote sensing estimation, soil water retrieval, biophysical and biochemical parameter inversion, hydrometeorological observation, scale prediction, watershed hydrological simulation and assimilation applications. The highlights of the experiment include the improvement of evapotranspiration observation and remote sensing model, the application of airborne LiDAR, and the development and application of multi-angle thermal infrared sensor. A total of 235 data sets were released in the Heihe Integrated Remote Sensing Joint Experiment, including all data sets of pre-test, enhanced test and continuous observation test. These include aerial remote sensing data set, microwave radiometer data set, WiDAS data set, imaging spectrometer data set, LiDAR data set, satellite remote sensing data set; The ground observation data set includes hydrologic experiment data set in cold region, forest hydrologic experiment data set, arid region hydrologic experiment data set, meteorological hydrologic experiment data set, etc.

create time:

2023/09/06

datasets count:

235

views count:

580446

downlonds count:

484

file size:

810.1 GiB

Thematic data of Heihe ecohydrological remote sensing experiment

Integrated Remote Sensing Observation Joint Experiment of Eco-Hydrological Process in Heihe River Basin (hereinafter referred to as "Heihe Ecohydrological Remote sensing Experiment") is the core scientific objective of integrated eco-hydrological research in Heihe River Basin, based on the established observation system in Heihe River Basin and the results of the "Integrated Remote Sensing Joint Experiment of Heihe River Basin" carried out from 2007 to 2009. A multi-scale comprehensive observation experiment with satellite, aerial remote sensing and ground observation will be carried out in the Heihe River Basin from 2012 to 2015. The objective of the experiment is to significantly improve the observation capability of basin ecology and hydrological processes, establish an internationally leading basin observation system, and improve the application capability of remote sensing in the integrated study of basin ecology and hydrology and water resources management. "Heihe Ecohydrology Remote sensing Experiment" takes Heihe River basin, which is characterized by high cold and arid region, as the experimental area. Located between 97.1 ~ 102.0°E and 37.7 ~ 42.7°N, this basin is the second largest inland river basin in China, originating in the middle of Qilian Mountains, reaching the border of China and Mongolia in the north, bordered by Shiyang River basin in the east and Shule River basin in the west, with a total area of 143,000 km2. The Heihe Ecohydrology remote sensing experiment consists of basic experiment, special experiment, application experiment, product and method research and information system. At the same time, it will cooperate with the "Heihe Plan" project and other related projects to carry out joint observation, complement each other's advantages, jointly form a basin observation system, and jointly carry out applied research. In the Heihe River basin, three key experimental areas were selected to carry out enhanced and long-term observation experiments, namely, the cold area in the upper reaches, the artificial oasis area in the middle reaches and the natural oasis area in the lower reaches. In the above three key test areas, core observation areas, observation cells and observation (sampling) units were nested according to different test targets to carry out multi-scale observation experiments. The main output data of this project include: multi-scale observation experiment of surface evapotranspiration on heterogeneous underlying surface - flux observation matrix data, soil observation data of Heihe River Basin, hydrometeorological observation data, coverage and biomass observation data in the middle reaches, vegetation index data, leaf area index data, land use cover and remote sensing data, etc.

create time:

2023/09/06

datasets count:

182

views count:

472759

downlonds count:

574

file size:

745.1 GiB

R&D and Demonstration of Stability Maintenance and Integrated Ecosystem Management Technologies in Desert-Oasis Area of Northwest China

Based on three national stations, Linze Station, Shapotou Station and Minqin Station, as well as the long-term positioning test platforms of Xinjiang Academy of Reclamation Sciences, Tarim University and Shihezi University, this project mainly studies the dynamic changes of typical oases in Northwest China in the past 60 years and their driving mechanisms; reveals the coupling of ecological and hydrological processes in typical oases, the water-heat balance differentiation law and the mechanism of maintaining the stability of the oases; and researches, develops, and optimizes and integrates key technologies for the maintenance of the oases' stability. Develop and optimize the integration of key technologies to maintain the stability of oasis: the integration of natural vegetation and artificial vegetation in the desert-oasis transition zone, the structure of water-saving oasis protection system and its spatial configuration technology, the technology of efficient soil and water utilization, the technology of joint utilization of surface water and groundwater, the technology of ground power enhancement, the technology of comprehensive management of sandy and salinized land, and the ecological industrial technology model of plantation and aquaculture integration; and research the uncertainty of water resource changes in oasis caused by climate change and human activities. It will study the uncertainty of oasis water resources changes caused by climate change and human activities, establish an evaluation index system for oasis functional stability and ecological security, build a decision support system for oasis adaptive management, and put forward a technical system and countermeasure suggestions for oasis adaptive management at different levels of human-water conflicts.

create time:

2023/09/06

datasets count:

14

views count:

60670

downlonds count:

502

file size:

290.5 MiB

Thematic data on desertification process and its control in northern China

The National Key Basic Research and Development Program (973) project "Research on Desertification Process and Its Control in Northern China (TG2000048700)" (2000.10-2005.09) will reveal the causes, sources, occurrence rules and transport routes of sandstorms in China. Understanding the process, present situation, temporal and spatial distribution and trend of desertification land in northern China is of great practical significance for accelerating the implementation of the national strategy of western development, promoting regional social and economic development, narrowing the difference between the east and the west, and guaranteeing political stability, national unity and national security. It can provide theoretical basis and technical support for the formulation and implementation of the national desertification control plan, and serve for the implementation of the National Desertification Control Project Plan and the National Ecological Environment Construction Plan. In particular, the method and system of prediction and warning of sandstorm are of great significance for taking effective measures, reducing disaster losses and improving environmental quality. The project will also study the impact of modern human activities on desertification and dust storms, and raise environmental awareness among the public and social groups; This project will summarize the anti-desertification technologies at home and abroad, explore new anti-desertification measures, and serve the implementation of anti-desertification projects.

create time:

2023/09/06

datasets count:

8

views count:

61323

downlonds count:

342

file size:

202.0 MiB

Thematic data of snow cover characteristics and distribution survey in China

The overall objectives of the "Survey of Snow Cover Characteristics and Distribution in China" are to formulate field measurement standards for snow cover in China, carry out ground and remote sensing surveys of snow cover characteristics, obtain data sets of spatial distribution and changes of snow cover in China since 1980, compile new snow cover type maps and series of thematic atlas in China, and establish and share comprehensive data bases of snow cover characteristics to meet the needs of climate change research and water research Basic data needs for resource assessment and disaster prevention and mitigation. The project is in the stage of data collection, and the main work that has been completed includes: "China Snow Surface Observation Code" (has been officially published), snow depth/snow pressure data of 873 meteorological stations, snow surface survey of 40 ordinary stations, 6 super stations, 6 lines 672 profiles, 19 500m and 9 25km quadrates. Collation, quality control, metadata and data documentation of 11 Snow Course observations; Preparation of remote sensing products for snow cover area (1980-2019), snow water equivalent (1980-2019) and snow albedo (1980-2019) in China, and compilation of metadata and data documents; A series of thematic maps of water-heat effect of snow cover in typical farmland areas in Northeast China, a series of thematic maps of snowmelt flood disasters on the north and south slopes of the middle Tianshan Mountains in Xinjiang, and a thematic map of snow water resources in typical river basins in Northwest China and its metadata and data documents were compiled. In addition, five long time series remote sensing products, including snow cover area (5km/500m), snow albedo (daily/eight-day synthesis) and snow water equivalent, were collected and released in advance.

create time:

2023/09/06

datasets count:

40

views count:

185017

downlonds count:

3353

file size:

2.1 TiB

Thematic Data on observation data of Baishui No.1 glacier in Yulong Snow Mountain

Yulong Snow Mountain is located in the north of Lijiang City, Yunnan Province, in the southeast margin of the Qinghai-Tibet Plateau, belonging to the Hengduan Mountain system, is the southernmost of the Qinghai-Tibet Plateau, the lowest latitude of the Eurasian continent of modern Marine glacier area. There are 19 modern glaciers distributed in the region, among which the largest glacier is Baishui No. 1 Glacier, which is located on the eastern slope of the main peak of Yulong Snow Mountain, with a length of 2.7 kilometers and an area of 1.52 square kilometers. The snow line height is between 4800 and 5000 meters. Studies have shown that due to the impact of global warming, the Whitewater 1 glacier has been shrinking at a rate of about 27 meters per year in the past 10 years, which is one of the fastest melting glaciers in the world. The Yulong Snow Mountain Glacier and Environment Observation and Research Station of the Chinese Academy of Sciences began to carry out long-term observation of changes at the end of Baishui Glacier 1 in 1999, and began to carry out systematic observation of mass balance, borehole ice temperature, glacier meteorology and glacier hydrology in 2008. This topic includes all kinds of observation data of Baishui No. 1 glacier in Yulong Station since 1999.

create time:

2023/09/06

datasets count:

34

views count:

126997

downlonds count:

161

file size:

32.1 MiB

Super 973 Program "Research on Cryospheric Changes and Their Impact"

The data of this topic comes from the National Key Program for Basic Research and Development (973 Program) project "Research on Cryospheric Changes and Their Impacts". This project was officially launched in April 2013, with Qin Dahe, academician of the Chinese Academy of Sciences (CAS), as the leader of the expert group, and Ding Yongjian, researcher of the Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, as the chief scientist. The project is jointly undertaken by thirteen organizations, including the Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, the Qinghai-Tibet Plateau Research Institute, the Chengdu Institute of Mountain Hazards and Environment of the Ministry of Water Resources, Tsinghua University, Lanzhou University and others. The project aims to carry out research on cryosphere change, impacts and adaptations on three major scientific issues of the cryosphere, namely, the mechanism of cryosphere change, the interaction between the cryosphere and climate, and the impacts and adaptations to cryosphere change, which is of great significance to promote the international cryosphere science towards the systematization of disciplines, and to improve the overall level of cryosphere science. A total of 48 datasets have been generated by the project, including data products such as field observations of glaciers, permafrost and snow cover in the cryosphere, remote sensing inversion and numerical simulation.

create time:

2023/09/06

datasets count:

44

views count:

139854

downlonds count:

849

file size:

67.8 GiB

Thematic Data on soil and water conservation in the Yellow River Basin

Soil and water conservation is the lifeline of mountain development, the basis of land consolidation and river management, the basis of national economic and social development, and a basic national policy that we must adhere to for a long time. This topic collected years of observation and monitoring data of Xiaxifeng, Tianshui and Suide water and soil conservation management supervision bureaus and Yellow River Water and soil Conservation ecological Environment Monitoring Center of the Upper and Middle reaches of the Yellow River Administration. It mainly includes the long-term observation data of runoff and sediment, rainfall, runoff field, standard plot and the survey report data of vegetation and underlying surface at Xifeng, Tianshui and Suide observation stations. Data resources of land use, vegetation cover and soil erosion in key areas of the Yellow River Basin.

create time:

2023/09/06

datasets count:

559

views count:

1643996

downlonds count:

6779

file size:

11.4 GiB

Variguan background observation data set of atmospheric composition

Founded in 1994, Waliguan Station is located in Gonghe County, Hainan Prefecture, Qinghai Province, China. It is one of the 29 atmospheric background baseline observation stations of the World Meteorological Organization's Global Atmospheric Observation System, jointly invested by the Chinese government and the Global Environment Facility, and operated by the China Meteorological Administration. The station is the highest atmospheric background reference monitoring station in the world, and the first atmospheric background reference monitoring station in the continental hinterland in the world, and its establishment fills the gap of global atmospheric monitoring (GAW) in the Eurasian continent. Up to now, the station is still the only inland atmospheric baseline observation station in the Northern Hemisphere, and its observation results can represent the atmospheric greenhouse gas concentration and its change status in the northern mid-latitude inland areas, and are used as supporting data by the United Nations Framework Convention on Climate Change and the IPCC and other scientific assessment reports, which have important research value and decision-making instructions. In 2006, Wariguan Station passed the evaluation and certification organized by the Ministry of Science and Technology, and officially entered the national field station series. Through 25 years of construction and improvement, the station has realized all-weather, high-density observation of more than 60 elements in 30 items such as greenhouse gases, halogenated gases, aerosols, solar radiation, radioactive substances, black carbon, precipitation chemistry and atmospheric physics, generating more than 60,000 data every day, and basically forming an observation technical system and technical system covering the background of major atmospheric components.

create time:

2023/09/05

datasets count:

16

views count:

91978

downlonds count:

436

file size:

5.0 MiB

Thematic Data on Ecological Environment and High Quality Development in the Weihe River Basin

Weihe River originates from the Niaoshushan in Weiyuan County, Dingxi City, Gansu Province, flows through Ningxia Hui Autonomous Region, and reaches the Yellow River in Tongguan County, Weinan City, Shaanxi Province. The river basin covers an area of 134,300 square kilometers, with a total length of 818 kilometers. As the largest tributary of the Yellow River, the Wei River plays a vital role in the high-quality development of the Yellow River basin. Since 2005, the Weihe River Basin has been included in the key management planning category by The State Council, and its ecological environment changes have attracted much attention. In order to promote the high-quality development of ecological protection in the Weihe River Basin, it provides necessary data support for related research. The data center organized efforts to comprehensively collect, process and sort out the basic environmental data, thematic data and statistical data of the Weihe River Basin. Among them, all kinds of statistical data mainly come from statistical bulletins, and through electronic processing, data analysis, data cleaning and other quality control and reprocessing, the final form of high-quality development of systematic data in the Weihe River Basin. Data for this topic include: Weihe River Basin basic geographic data, remote sensing thematic data, soil data, natural state statistics, water environment statistics, atmospheric environment statistics, solid waste statistics, natural ecological statistics, land use statistics, forestry resources statistics, natural disasters and emergencies statistics, environment and investment statistics, urban environment statistics There are 40 data sets in 16 categories, including environmental status statistics, rural environmental status statistics, meteorological station monitoring (daily) data, and air quality monitoring (daily) data.

create time:

2023/09/05

datasets count:

40

views count:

222463

downlonds count:

2979

file size:

22.6 TiB