本数据是WorldClim 第 2 版的标准生物气候变量数据，包含历史时期（1970-2000）的19个气候因子变量数据。它们是 1970-2000 年的平均值。\nBIO1 = 年均气温，℃。\nBIO2 = 平均昼夜温差，月内最高温度与最低温度之差的平均值，℃。\nBIO3 = 等温 (BIO2/BIO7) (×100)\nBIO4 = 温度季节性，每个月平均温度的标准差，并将其放大100倍。\nBIO5 = 最暖月的最高温度，一年中最暖月份的最高温度，℃。\nBIO6 = 最冷月的最低温度，一年中最冷月份的最低温度，℃。\nBIO7 = 年内温度变化幅度 (BIO5-BIO6)，℃。\nBIO8 = 最湿季度平均温度，一年中降水量最多的三个月（即最湿润季度）的平均温度，℃。\nBIO9 = 最干季度平均气温，一年中降水量最少的三个月（即最干燥季度）的平均气温，℃。\nBIO10 = 最暖季平均气温，℃。\nBIO11 = 最冷季平均气温，℃。\nBIO12 = 年降水量，mm。\nBIO13 = 最湿月降水量，mm。\nBIO14 = 最干月降水量，mm。\nBIO15 = 降水季节性 (变异系数)\nBIO16 = 最湿季降水量，mm。\nBIO17 = 最干季降水量，mm。\nBIO18 = 最暖季降水量，mm。\nBIO19 = 最冷季降水量，mm。
", "ds_source": "数据源自https://worldclim.org。 生物气候变量是从每月的气温和降雨量值中推导出来的，目的是生成更具生物意义的变量。这些变量通常用于物种分布建模和相关生态建模技术。生物气候变量代表年度趋势（如年平均气温、年降水量）、季节性（如气温和降水量的年度变化范围）以及极端或限制性环境因素（如最冷和最热月份的气温以及潮湿和干燥季度的降水量）。季度是指三个月的时间（一年的 1/4）。
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They are averages from 1970 to 2000.\r\nBIO1 = Average annual temperature, ℃.\r\nBIO2 = Average day and night temperature difference, average value of the difference between the highest and lowest temperatures in the month, ℃.\r\nBIO3 = Isothermal (BIO2/BIO7) (×100)\r\nBIO4 = Temperature seasonality, the standard deviation of the average temperature for each month, amplified by a factor of 100.\r\nBIO5 = highest temperature in the warmest month, highest temperature in the warmest month of the year, ℃.\r\nBIO6 = lowest temperature in the coldest month, lowest temperature in the coldest month of the year, ℃.\r\nBIO7 = Temperature change range during the year (BIO5-BIO6), ℃.\r\nBIO8 = Average temperature in the wettest season, the average temperature in the three months of the year with the most precipitation (i.e., the wettest season), ℃.\r\nBIO9 = Average temperature in the driest quarter, average temperature in the three months of the year with the least precipitation (i.e., the driest quarter), ℃.\r\nBIO10 = Average temperature in the warmest season, ℃.\r\nBIO11 = Average temperature in the coldest season, ℃.\r\nBIO12 = Annual precipitation, mm.\r\nBIO13 = wettest monthly precipitation, mm.\r\nBIO14 = Driest monthly precipitation, mm.\r\nBIO15 = precipitation seasonality (coefficient of variation)\r\nBIO16 = wettest season precipitation, mm.\r\nBIO17 = Rainfall in the driest season, mm.\r\nBIO18 = warmest season precipitation, mm.\r\nBIO19 = coldest season precipitation, mm.", "ds_source": "Data comes from https://worldclimate. org. Bioclimatic variables are derived from monthly temperature and rainfall values in order to generate more biologically significant variables. These variables are commonly used in species distribution modeling and related ecological modeling techniques. Bioclimatic variables represent annual trends (such as annual average temperature, annual precipitation), seasonality (such as annual ranges of changes in temperature and precipitation), and extreme or limiting environmental factors (such as temperatures in the coldest and hottest months and precipitation in the humid and dry seasons). A quarter is a period of three months (1/4 of a year).", "ds_process_way": "", "ds_quality": "", "ds_acq_place": "", "ds_ref_instruction": "", "ds_ref_way": "", "ds_format": "", "ds_projection": "", "ds_space_res": "", "ds_time_res": "" } }, "license_type": null, "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "生物气候变量", "年平均气温", "年降水量" ], "ds_subject_tags": [ "大气科学" ], "ds_class_tags": [], "ds_locus_tags": [ "全球" ], "ds_time_tags": [], "ds_contributors": [ "邵倩影" ], "ds_meta_authors": [ "邵倩影" ], "ds_managers": [ "赵金" ], "category": "遥感再分析数据" }