05 2000-2018年三江源区逐年气象观测数据产品气象数据利用2000~2018年的全球日气候历史数据网络(Daily Global Historical Climatology Network-Daily,GHCN-D)和中国气象局国家气象信息中心制作的“三江源1km范围的地面气候资料日值数据集”,选取日降水和日均温两个要素,对其进行读取、合并、检查、统计、生成空间插值批处理代码等操作,由Anusplin软件插值生成的栅格数据并根据三江源的矢量边界数据进行裁剪,得到空间分辨率为1km、时间分辨率为每年,[Geotiff]格式三江源区气象数据空间插值数据集。该数据不仅可支持对该地区进行深入的诸如物候等气候变化研究(Liu et al., 2020),也可进一步应用于植被生产力估算(Yang et al., 2019)、土壤侵蚀估算(Wang et al., 2019)等研究。
06 2000-2018年三江源区每8天归一化差植被指数观测数据产品归一化差植被指数应用2000至2018年中分辨率成像光谱仪(MODIS)光谱反射率数据产品(MOD09Q1),根据提取的波段信息数据,在ArcGIS的栅格计算器中进行批处理,采用TIMESAT3.2软件的S-G滤波方法对NDVI数据进行降噪处理,从而对时间序列进行重构,得到空间分辨率为1km、时间分辨率为每8天,[ArcGIS float]格式三江源区归一化差植被指数数据集。通过该数据提取并分析了2000-2014年三江源区物候变化(Liu et al., 2020),作为模型输入数据,可估算植被净初级生产力(Yang et al., 2019;王军邦等,2021)。
该数据集有效支撑了青海三江源区生态保护与成效评估工作,为进一步开展生态评估、环境变化、气候变化等研究提供数据支撑。目前,部分成果已在International Journal of Remote Sensing、植物生态学报等期刊上发表(文章DOI: 10.1080/01431161.2010.512933,DOI:10.3773/j.issn.1005-264x.2009.02.003)。 数据集链接:(1)NPP,网址链接是:http://nesdc.org.cn/sdo/detail?id=6098e3827e28173d231e1621(2)产草量,网址链接是:http://nesdc.org.cn/sdo/detail?id=609de9c07e28176b33e8743d
相关论文信息:1.Wang, J., J. Dong, Y. Yi, G. Lu, J. Oyler, W. K. Smith, M. Zhao, J. Liu, S. Running. (2017),Decreasing net primary production due to drought and slight decreases in solar radiation in China from 2000 to 2012,Journal of Geophysical Research: Biogeosciences,121, doi:10.1002/2016JG0034172.Wang Junbang, Wang Juwu, Ye Hui et al. An interpolated temperature and precipitation dataset at 1-km grid resolution in China (2000 –2012). China Scientific Data Vol. 2, No. 1, 20173.Liu,Y., J.B.Wang, J. W. Dong, et al., 2020: Variations of Vegetation Phenology Extracted from Remote Sensing Data over the Tibetan Plateau Hinterland during 2000–2014. J. Meteor. Res., 34(4), 786–797, doi:10.1007/s13351-020-9211-x.4.Zhao Xuanlan, Wang Junbang, YE Hui, Muhammad Amir, WANG Shaoqiang. The Bowen Ratio of an Alpine Grassland in Three-River Headwaters, Qing-Tibetan Plateau, from 2001 to 2018. Journal of Resources and Ecology, 2021, 12(3): 305-318.5.WANG Zhao, WANG Junbang. 2019. Changes of Soil Erosion and Possible Impacts from Ecosystem Recovery in the Three-River Headwaters Region, Qinghai, China from 2000 to 2015. Journal of Resources and Ecology, 10(5): 461–471.6.YANG Yihan, WANG Junbang, LIU Peng, LU Guangxin, LI Yingnian. Climatic Changes Dominant Interannual Trend in Net Primary Productivity of Alpine Vulnerable ecosystems. Journal of Resource and Ecology. 2019 10(x)7.CUI Mingyue, WANG Junbang, WANG Shaoqiang, YAN Hao, LI Yingnian. Temporal and Spatial Distribution of Evapotranspiration and Its Influencing Factors on Qinghai-Tibet Plateau from 1982 to 2014. Journal of Resource and Ecology. 2019 10(2): 213-224.8.Yan, H.,Wang, S.,Dai, J.,Wang, J.,Chen, J., &Shugart, H. H.(2021).Forest greening increases land surface albedo during the main growing period between 2002 and 2019 in China.Journal of Geophysical Research: Atmospheres,126, e2020JD033582.https://doi.org/10.1029/2020JD0335829.王军邦,杨屹涵,左婵,顾峰雪,何洪林. 气候变化和人类活动对中国陆地生态系统总初级生产力影响厘定研究. 生态学报,2021. 18. DOI:10.5846/stxb202104130956.10.王军邦,赵烜岚,叶辉,张志军,何洪林 . 基于贝叶斯模型平均的蒸散遥感产品集成——以三江源国家公园为例[J/OL] . 应用生态学报 : 1-12[2021-06-10].https://doi.org/10.13287/j.1001-9332.202106.017.11.钱前,张秀娟,王军邦,叶辉,李英年,张志军. 2005-2017年青海三江源区草地家畜承载力时空格局研究. 草地学报,2021,29(6):1053-1058.