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guojuwu

铁虫 (小有名气)

[求助] worldclim 已有1人参与

worldclim网站上的数据是如何提取的,求帮忙,有点急用?
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iriver595t

木虫 (正式写手)

根据自己的需求,下载对应分辨率的数据(栅格格式)。加载到arcgis后,extract by values就可以
3楼2020-08-05 10:15:55
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通天路

版主 (著名写手)

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★
感谢参与,应助指数 +1
guojuwu: 金币+10, ★★★★★最佳答案, 非常感谢! 2015-03-18 23:18:40
数据格式http://www.worldclim.org/formats
数据下载http://www.worldclim.org/download
1.  加地图图层和worldclim数据图层到Arcmap.
2. toolbox --- spatial analyst tools -- zonal -- zonal statistics table.
3. input raster or feature zone data: 地图图层
    zone field: 地图图层地段(CNTY-ID)
    input value raster: worldclim数据图层
    output table:文件名.dbf (加后缀后将生成一个文本文件表格,这点很重要)
如果要把worldclim数据图层的中国部分截取出来,则:
1. toolbox --- spatial analyst tools -- extraction -- extract by mask
2. input raster:  worldclim数据图层
    input raster or feature mask data: 地图图层
    output raster: 输入图层名
最后可形成一个新的截取图层。
Worldclim 数据图层说明:
BIO1 = Annual Mean Temperature
BIO2 = Mean Diurnal Range (Mean of monthly (max temp - min temp))
BIO3 = Isothermality (BIO2/BIO7) (* 100)
BIO4 = Temperature Seasonality (standard deviation *100)
BIO5 = Max Temperature of Warmest Month
BIO6 = Min Temperature of Coldest Month
BIO7 = Temperature Annual Range (BIO5-BIO6)
BIO8 = Mean Temperature of Wettest Quarter
BIO9 = Mean Temperature of Driest Quarter
BIO10 = Mean Temperature of Warmest Quarter
BIO11 = Mean Temperature of Coldest Quarter
BIO12 = Annual Precipitation
BIO13 = Precipitation of Wettest Month
BIO14 = Precipitation of Driest Month
BIO15 = Precipitation Seasonality (Coefficient of Variation)
BIO16 = Precipitation of Wettest Quarter
BIO17 = Precipitation of Driest Quarter
BIO18 = Precipitation of Warmest Quarter
BIO19 = Precipitation of Coldest Quarter
2楼2015-03-16 17:03:55
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