泛第三極大數(shù)據(jù)系統(tǒng)

1、泛第三極大數(shù)據(jù)系統(tǒng)Big Data System for Pan-Third Pole標題：祁連山綜合觀測網(wǎng)：疏勒河流域地表過程綜合觀測網(wǎng)（柳園站物候相機觀測數(shù)據(jù)集-2019）英文標題：Qilian Mountains integrated observatory network: Dataset of Shulehe integrated observatory network (Phenology camera observation data set of Liuyuan Station, 2019)中文摘要：該數(shù)據(jù)集包含2019年3月26日至10月31日疏勒河流域地表過程綜合觀測網(wǎng)柳園

2、站的物候相機觀測數(shù)據(jù)，該儀器由北京師范大學自主研發(fā)并進行處理。物候相機集成數(shù)據(jù)獲取與數(shù)據(jù)傳輸功能。該物候相機采用垂直向下的方式采集數(shù)據(jù)，拍攝數(shù)據(jù)分辨率為2592*1944，可指定拍攝時間頻率。對于綠度指數(shù)物候期計算，需要根據(jù)感興趣區(qū)域計算相對綠度指數(shù)（GCC, Green Chromatic Coordinate公式為GCC=G/(R+G+B), R、G、B為圖像紅、綠、藍三通道像元值），然后進行無效值填充和濾波平滑，最后根據(jù)生長曲線擬合確定關(guān)鍵物候期參數(shù)，如生長季起始日、頂峰、生長季結(jié)束日等；對于覆蓋度，首先進行數(shù)據(jù)預處理，選擇光照不太強的圖像，然后將圖像分割為植被和土壤，計算每張圖像的植被

3、像素占計算區(qū)域內(nèi)的比例作為該圖像對應(yīng)的覆蓋度，在時間序列數(shù)據(jù)提取完成以后，再按用戶指定的時間窗口對原始覆蓋度數(shù)據(jù)進行平滑濾波，濾波后的結(jié)果為最終的時間序列覆蓋度。本數(shù)據(jù)集包括相對綠度指數(shù)（Gcc）、物候期及覆蓋度（Fc）。英文摘要：The dataset contains the phenological camera observation data of the Liuyuan station in the midstream of Shulehe integrated observatory network from March 26 to October 31, 2019. The i

4、nstrument was developed and data processed by Beijing Normal University. The phenomenon camera integrates data acquisition and data transmission functions. The camera captures data by look-downward with a resolution of 25921944. For the calculation of the greenness index and phenology, the relative

5、greenness index (GCC, Green Chromatic Coordinate, calculated by GCC=G/(R+G+B) needs to be calculated according to the region of interest, then the invalid value filling and filtering smoothing are performed, and finally the key phenological parameters are determined according to the growth curve fit

6、ting, such as the growth season start date, Peak, growth season end, etc. For coverage, first, select images with less intense illumination, then divide the image into vegetation and soil, calculate the proportion of vegetation pixels in each image in the calculation area. After the time series data

7、 is extracted, the original coverage data is smoothed and filtered according to the time window specified by the user, and the filtered result is the final time series coverage. This data set includes relative greenness index (Gcc), phenological period and coverage (Fc).上傳縮略圖（最大1M，最小分辨率512*512，圖像文件格

8、式為jpg, png, gif）儀器安裝示意圖相機拍攝數(shù)據(jù)示意圖數(shù)據(jù)文件命名方式和使用方法：圖像的文件格式是為.jpg，處理后的文件為excel文件（.xlsx格式），具體命名如下：相機拍攝的照片：年份+站點編號+月+日+時間，如Liuyuan201907220800.jpg處理后的數(shù)據(jù)，年份+*觀測網(wǎng)+站點名稱+物候數(shù)據(jù)，如2019年疏勒河流域地表過程綜合觀測網(wǎng)柳園站物候數(shù)據(jù)翻譯：Picture from phenology camera: Station+yyyy+mm+dd+hhmm, for example, Liuyuan201907220800.jpg Post processin

9、g data: Year+* observatory network+ site no + Phenology camera. 文件大小： 原始圖像數(shù)據(jù)集大小354MB，數(shù)據(jù)處理后物候數(shù)據(jù)大小為11KB.時間范圍:2019.03.26-2019.10.31資助項目：泛第三極環(huán)境變化與綠色絲綢之路建設(shè)專項（XDA20100101）數(shù)據(jù)來源（(如果有)請描述您的數(shù)據(jù)源是如何(或在哪)獲取的）：疏勒河流域地表過程綜合觀測網(wǎng)柳園站數(shù)據(jù)來源翻譯：Liuyuan station in the Shulehe integrated observatory network空間范圍（東、西、南、北經(jīng)緯度）： 41.405N,