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A dataset of biomass estimation models and parameters of spruces in Xinjiang from 1980 to 2021 1980-2021年新疆云杉生物量估算模型和参数数据集
Pub Date : 2022-12-31 DOI: 10.11922/11-6035.nasdc.2022.0012.zh
L. Luo, Tingting Liu, Lina Hu, Shanshan Cao, Wei Sun
Spruces are an important tree species in Xinjiang. Accurate estimation of spruce biomass plays an important role in evaluating forest ecological structure and forest carbon balance in Xinjiang. In this study, we collected the relevant literature of Xinjiang spruce biomass estimation model from CNKI, Web of Science and the National Public Service Platform for Standards Information by constructing a retrieval method. And we collated the literature and used CiteSpace software for visualized mapping, so as to create a dataset of biomass estimation models and parameters of spruces in Xinjiang from 1980 to 2021. Biomass estimation models consist of biomass estimation models based on measurable factors and biomass estimation models based on remote sensing, machine learning algorithm. The former has 13 types, 101 fitting formulas, applicable to the estimation of different spruce organs, and the ground biomass; the latter has 3 types, 12 fitting formulas, suitable for the estimation of spruce forest biomass. This dataset can provide model data support for the study on spruce biomass estimation in Xinjiang.
云杉是新疆重要的乔木树种。准确估算云杉生物量对评价新疆森林生态结构和森林碳平衡具有重要意义。本研究通过构建检索方法,从CNKI、Web of Science和国家标准信息公共服务平台上收集了新疆云杉生物量估算模型的相关文献。通过文献整理,利用CiteSpace软件进行可视化制图,建立了1980 - 2021年新疆云杉生物量估算模型和参数数据集。生物量估算模型包括基于可测量因子的生物量估算模型和基于遥感、机器学习算法的生物量估算模型。前者有13种类型,101个拟合公式,适用于云杉不同器官和地面生物量的估算;后者有3种类型,12种拟合公式,适用于云杉林生物量的估算。该数据集可为新疆云杉生物量估算研究提供模型数据支持。
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引用次数: 0
A dataset of multiple cropping indexes with the 10 m spatial resolution on Hainan Island in 2016 and 2020 2016年和2020年海南岛10 m空间分辨率复种指数数据集
Pub Date : 2022-12-31 DOI: 10.11922/11-6035.noda.2022.0019.zh
Jiawei Guo, H. Ye, Chao Nie, B. Cui, Wenjiang Huang
The multiple cropping index is an important parameter for the evaluation of cultivated land fertility and agroecological evaluation. The development of remote sensing technology makes it possible to monitor multiple cropping indexes with high temporal and spatial resolution. Based on Sentinel-2 data, we used in this paper the Savitzky-Golay filtering method and the quadratic difference method to carry out a research on the extraction of the multiple cropping indexes on Hainan Island. We combined the ground sample data in 2020 for verification to produce a dataset of multiple cropping indexes on Hainan Island in 2016 and 2020. The overall accuracy of the multiple cropping indexes obtained by remote sensing extraction in this way is 91.9%, and the Kappa coefficient is 0.9. This dataset can be used as basic data for the analysis of temporal and spatial changes of cultivated lands in Hainan. Moreover, it can also provide data reference and decision support for Hainan Province to carry out the supervision of agricultural ecological resources and implement the sustainable development strategy of tropical high-efficiency agriculture.
复种指数是耕地肥力评价和农业生态评价的重要参数。遥感技术的发展,使得对多作物指数进行高时空分辨率的监测成为可能。本文基于Sentinel-2数据,采用Savitzky-Golay滤波法和二次差分法对海南岛复种指数的提取进行了研究。我们结合2020年的地面样本数据进行验证,生成了2016年和2020年海南岛复种指数数据集。该方法遥感提取的复种指数总体精度为91.9%,Kappa系数为0.9。该数据集可作为分析海南省耕地时空变化的基础数据。为海南省开展农业生态资源监管,实施热带高效农业可持续发展战略提供数据参考和决策支持。
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引用次数: 0
A dataset of carbon and water fluxes and micrometerological elements in Danzhou rubber plantation (2010-2018) 2010-2018年儋州橡胶林碳水通量及微量气象要素数据集
Pub Date : 2022-12-31 DOI: 10.11922/11-6035.csd.2022.0063.zh
Siqi Yang, Junyi Liu, Chuan Yang, G. Lan, Bonkeun Song, Zhixiang Wu
Rubber plantation is one of the main artificial vegetation types in Hainan Island. As an important forest ecosystem in China’s tropical regions, rubber plantation plays an important role in the regional carbon and water cycle. Measuring the carbon and water fluxes is critical for estimating the carbon and water balance and energy exchange of rubber plantation. Since November 2009, near-surface CO2 and H2O fluxes observation have been carried out in Danzhou rubber plantation, including eddy covariance system and meteorological observation system. Up to now, it has accumulated flux and meteorological observation data for 12 years. This dataset organizes the rubber plantation flux and conventional meteorological data in Danzhou from 2010 to 2018, including net ecosystem productivity, ecosystem respiration, gross ecosystem productivity, latent heat flux, sensible heat flux, evapotranspiration, air temperature, air relative humidity, vapor pressure, wind speed, wind direction, atmospheric pressure, total radiation, net radiation, photosynthetically active radiation, soil temperature, soil water content and precipitation. This dataset can provide basis and reference for ecosystem evaluation and sustainable development planning in economic and social.
橡胶林是海南岛主要的人工植被类型之一。橡胶林作为中国热带地区重要的森林生态系统,在区域碳循环和水循环中起着重要作用。测定橡胶林碳水通量是估算橡胶林碳水平衡和能量交换的关键。自2009年11月起,在儋州橡胶园开展了近地表CO2和H2O通量观测,包括涡旋相关方差系统和气象观测系统。至今已积累了12年的通量和气象观测资料。本数据集整理了2010 - 2018年儋州市橡胶种植区生态系统净生产力、生态系统呼吸、生态系统总生产力、潜热通量、感热通量、蒸散发、气温、空气相对湿度、蒸汽压、风速、风向、大气压、总辐射、净辐射、光合有效辐射、土壤温度、土壤含水量、降水等数据和常规气象数据。该数据集可为生态系统评价和经济社会可持续发展规划提供依据和参考。
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引用次数: 0
A dataset of mangrove forest changes on Hainan Island based on GF-2 data during 2015–2019 2015-2019年基于GF-2数据的海南岛红树林变化数据集
Pub Date : 2022-12-31 DOI: 10.11922/11-6035.noda.2021.0016.zh
Jingjuan Liao, Bing Zhu, Yunlei Chang, Li Zhang
Mangrove forests are wetland ecosystems in the coastal zone with important ecological and eco-economic service values. At the same time, mangrove forests are vulnerable ecosystems, being under threat from both natural and anthropogenic forces, so mangrove monitoring is a permanent task. The development of remote sensing technology has provided an efficient and convenient means for mangrove monitoring. In this study, we adopted a support vector machine (SVM) classification method with Gaussian radial kernel function, penalty factor of 100 and Gamma function 0f 0.022 to obtain a dataset of mangrove forest changes on Hainan Island from 2015 to 2019 by using Gaofen-2 (GF-2) data in 2015, 2017 and 2019 in combination with field survey data. The overall classification accuracy of this dataset is more than 99%, and the data volume is 58.7 MB. It can be used as the basic data for the analysis of spatial and temporal changes of mangrove forests. It can also provide decision-making support for the restoration, protection and management of mangrove wetland ecosystems, and facilitate the ecological environment supervision in Hainan Province.
红树林是海岸带的湿地生态系统,具有重要的生态和生态经济服务价值。同时,红树林是脆弱的生态系统,受到自然和人为力量的威胁,因此红树林监测是一项长期任务。遥感技术的发展为红树林监测提供了一种高效便捷的手段。在本研究中,我们采用高斯径向核函数、惩罚因子为100、伽玛函数为0.022的支持向量机(SVM)分类方法,利用高分2号(GF-2)2015年、2017年和2019年的数据,结合实地调查数据,获得了海南岛2015年至2019年红树林变化的数据集。该数据集的总体分类准确率超过99%,数据量为58.7MB。它可以作为分析红树林时空变化的基础数据。还可以为红树林湿地生态系统的恢复、保护和管理提供决策支持,为海南省生态环境监管提供便利。
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引用次数: 1
A dataset of Gansu soil species based on the Second National Soil Survey 基于第二次全国土壤调查的甘肃土壤物种数据集
Pub Date : 2022-12-31 DOI: 10.11922/11-6035.ncdc.2021.0025.zh
Meirong Gao, Yaonan Zhang, Jianfang Kang
Based on the results of the Second National soil Survey, Gansu Soil Species was established to accumulate systematic, standardized and quantitative data of soil classification as a solid foundation for the development of soil science in Gansu province.This dataset is based on the processing and integration of Gansu Soil Species published by Gansu Science and Technology Press in 1992. The original data and information of 285 soil species in the book (e.g. attribution and distribution, main characters, production performance summary, physical and chemical properties of profiles) are extracted and collected in a standardized, structured and digital way, integrated with 8 specialized subject data tables indexed by species ID and species name, and conducive to the development of online query, including soil species classification, distribution and characteristics of main soil types, basic information and distribution of soil species, sampling sites and occurrence layers of typical profiles, statistical physicochemical properties of typical profiles and soil species profiles, etc. This dataset can be widely used in regional land quality assessment, environmental effect research, soil carbon storage research, etc., providing significant scientific support for the promotion of new agricultural technology and rational utilization of soil resources.
在第二次全国土壤调查成果的基础上,建立了“甘肃土壤物种”,积累了系统、规范、定量的土壤分类数据,为甘肃省土壤科学的发展奠定了坚实的基础。本数据集基于甘肃科学技术出版社1992年出版的《甘肃土壤物种》的处理与整合。对书中285种土壤物种的原始数据和信息(如归属与分布、主要性状、生产性能总结、剖面理化性质等)进行标准化、结构化、数字化的提取和收集,并与8个以物种ID和物种名称为索引的专业学科数据表集成,有利于在线查询的开发,包括土壤物种分类、主要土壤类型的分布与特征、土壤物种的基本信息与分布、典型剖面的采样点与赋存层、典型剖面与土壤物种剖面的统计理化性质等。该数据集可广泛应用于区域土地质量评价、环境效应研究、土壤碳储量研究等领域,为农业新技术的推广和土壤资源的合理利用提供重要的科学支撑。
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引用次数: 0
A dataset of glacier crevasse distribution in the ablation areas of Hailuogou Glacier, Mt. Gongga (2016–2021) 贡嘎山海螺沟冰川消融区冰川裂隙分布数据集(2016-2021年)
Pub Date : 2022-12-31 DOI: 10.11922/11-6035.csd.2022.0039.zh
Han Wang, Qiao Liu, Yan Zhong, Yunyi Luo
The distribution of crevasses in mountain glaciers is of great significance for the study on glacier dynamics, ablation, and glacial instability-induced disasters. From 2016 to 2021, based on repeated aerial surveys during ablation seasons in the Hailuogou Glacier ablation areas on the eastern slope of Gongga Mountain, we obtained the annual high-resolution orthophoto images of the 4 km ice tongue of the glacier during the ablation period. Based on these co-registered images, the crevasses in Hailuogou ice tongue were visually interpreted and delineated from 2016 to 2021. We preliminarily analyzed the distribution characteristics and inter-annual variation of the crevasses. This dataset contains spatial information attributes like the crevasse length and orientation. It is the first set of survey results related to the structural glaciology of mountain glaciers in western China and it can provide data reference for the study on glacial hydrology, mass balance and dynamic models.
山地冰川决口的分布对研究冰川动力学、消融和冰川失稳灾害具有重要意义。从2016年到2021年,在贡嘎山东坡海螺沟冰川消融区消融季节的反复航测基础上,我们获得了消融期间冰川4公里冰舌的年度高分辨率正射影像。基于这些共同配准的图像,对2016年至2021年海螺沟冰舌的决口进行了可视化解释和描绘。初步分析了决口的分布特征和年际变化。该数据集包含空间信息属性,如裂缝长度和方向。这是我国西部第一组与山地冰川结构冰川学有关的调查结果,可为冰川水文、质量平衡和动力学模型的研究提供数据参考。
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引用次数: 0
A dataset of ultraviolet radiation reconstruction in China during 2015–2020 2015-2020年中国紫外线辐射重建数据集
Pub Date : 2022-12-31 DOI: 10.11922/11-6035.csd.2021.0089.zh
Tong Wu, H. Liu, Bo Hu, Zirui Liu, Guang-ren Liu
Ultraviolet radiation data can provide data support for many fields such as agriculture, ecology, environmental science, materials science, and human health. They have important application value in ecosystem succession, climate change research and environmental impact assessment. But with so little observational data and a short time scale, obtaining accurate, long-time, and wide range UV radiation data will provide scientific data support for relevant research. Therefore, based on the observation data of existing stations, in this paper, we constructed a method suitable for the reconstruction of ultraviolet radiation at the national scale, and combined with the conventional meteorological data observed for a long time, so as to obtain a dataset of ultraviolet radiation reconstruction. During the production of this dataset, first, we got the historical data of total surface radiation in accordance with the "hybrid model". Then, we created the UV radiation estimation formula by using clear sky index and other parameters. Finally, we calculated the reconstructed UV radiation data of 705 observation stations in China followed by the process of accuracy verification. The time range of this dataset is during 2015–2020.
紫外线辐射数据可以为农业、生态、环境科学、材料科学、人体健康等诸多领域提供数据支持。在生态系统演替、气候变化研究和环境影响评价等方面具有重要的应用价值。但在观测资料少、时间尺度短的情况下,获得准确、长时间、大范围的紫外线辐射数据,将为相关研究提供科学的数据支持。因此,本文在现有台站观测数据的基础上,构建了一种适合于全国范围内紫外线辐射重建的方法,并结合长期观测的常规气象数据,获得紫外线辐射重建数据集。在该数据集的制作过程中,我们首先按照“混合模式”获得了地表总辐射的历史数据。然后,利用晴空指数等参数建立了紫外线辐射估算公式。最后,对中国705个观测站重建的紫外线辐射数据进行了计算,并进行了精度验证。本数据集的时间范围为2015-2020年。
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引用次数: 0
A spatial distribution dataset for GDP in Hainan Island at 500 m from 2012 to 2020 海南岛2012-2010年500米GDP空间分布数据集
Pub Date : 2022-12-31 DOI: 10.11922/11-6035.noda.2022.0012.zh
Degang Zhang, Bowen Cheng, Jinfen Chen, Xiaoping Zhang
Based on ESA (European Space Agency) landcover data, national polar-orbiting partnership-visible infrared imaging radiometer suite (NPP-VIIRS) nighttime light data and Hainan provincial statistical data, we implemented the spatialization of Hainan Island’s Gross Domestic Product (GDP) in this article. According to the relationship between gross product of primary industry and landcover type, spatialization of Hainan Island gross product of primary industry was implemented. And by building the regression model between gross product of secondary and tertiary industries and the nighttime light index, Hainan Island gross product of secondary and tertiary industries is spatialized. Then the spatialization of GDP was realized by combining the results of spatialization of Hainan Island's primary industry, secondary and tertiary industries. Compared with Hainan provincial statistical data, the results show that the maximum relative errors of spatial distribution data and actual statistical data of gross product of primary industry, gross product of secondary and tertiary industries and GDP in each period are 3.25%, 9.57% and 7.49%, respectively, which indicates the dataset can better describe the spatial distribution of GDP in Hainan Island. In addition, this dataset can provide a decision-making basis for the government to formulate policies on economic development of Hainan Island, and provide data support for scholars to explore differences and trends in economic development of Hainan Island.
本文基于欧空局陆地覆盖数据、国家极轨合作伙伴可见红外成像辐射计套件(NPP-VIIRS)夜间光照数据和海南省统计数据,实现了海南岛国内生产总值(GDP)的空间化。根据海南岛第一产业生产总值与土地覆盖类型的关系,实现了海南岛第一工业生产总值的空间化。通过建立海南岛第二、第三产业生产总值与夜间灯光指数的回归模型,对海南岛第三、第二产业生产总值进行了空间化。结合海南岛第一产业、第二产业和第三产业的空间化结果,实现了GDP的空间化。结果表明,与海南省统计数据相比,各时期第一产业生产总值、第二产业和第三产业生产总值和国内生产总值的空间分布数据和实际统计数据的最大相对误差分别为3.25%、9.57%和7.49%,这表明该数据集能够更好地描述海南岛GDP的空间分布。此外,该数据集可以为政府制定海南岛经济发展政策提供决策依据,并为学者探索海南岛经济增长的差异和趋势提供数据支持。
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引用次数: 0
A dataset of trace elements in surface sediments from main rivers and intertidal zones in Jiaozhou Bay in 2015 2015年胶州湾主要河流及潮间带表层沉积物微量元素数据集
Pub Date : 2022-09-30 DOI: 10.11922/11-6035.csd.2022.0057.zh
Yongfang Zhao, X. Tian, Youquan Ye, Fangjian Xu
{"title":"A dataset of trace elements in surface sediments from main rivers and intertidal zones in Jiaozhou Bay in 2015","authors":"Yongfang Zhao, X. Tian, Youquan Ye, Fangjian Xu","doi":"10.11922/11-6035.csd.2022.0057.zh","DOIUrl":"https://doi.org/10.11922/11-6035.csd.2022.0057.zh","url":null,"abstract":"","PeriodicalId":57643,"journal":{"name":"China Scientific Data","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42460320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A dataset of physicochemical properties in Xinjiang Black Bee Honey from Nilka County 新疆尼尔卡县黑蜂蜂蜜理化性质数据集
Pub Date : 2022-09-30 DOI: 10.11922/11-6035.nasdc.2021.0005.zh
Fengfeng Shi, Tingting Liu, Liping Sun
{"title":"A dataset of physicochemical properties in Xinjiang Black Bee Honey from Nilka County","authors":"Fengfeng Shi, Tingting Liu, Liping Sun","doi":"10.11922/11-6035.nasdc.2021.0005.zh","DOIUrl":"https://doi.org/10.11922/11-6035.nasdc.2021.0005.zh","url":null,"abstract":"","PeriodicalId":57643,"journal":{"name":"China Scientific Data","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46019994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
China Scientific Data
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