{"id":"8a27d90b-0211-4629-8232-b088ee4536c0","title":"青藏高原草地实际净初级生产力、潜在净初级生产力和潜在地上生物量数据集（2000-2018）","title_en":"Grassland actual net primary production, potential net primary production and potential aboveground biomass on the Tibetan Plateau from 2000 to 2017","serial":"","user_limit":"为尊重知识产权、保障数据作者的权益、扩展数据中心的服务、评估数据的应用潜力，请数据使用者在使用数据所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明数据来源和数据作者。对于转载（二次或多次发布）的数据，作者还须注明原始数据来源。","instructions":"栅格，tif文件，可用ArcGIS相关软件打开","description":"采用计算草地实际净初级生产力，CASA模型是一种光能利用率模型，生产力的估算主要由植物吸收的光合有效辐射（APAR）与光能转化率（ε）2个变量决定。植被所吸收的光合有效辐射（APAR）取决于太阳总辐射和植被对光合有效辐射的吸收比例；采用TEM（Terrestrial Ecosystem Model）模型计算草地潜在生产力，首先计算草地的总初级生产力（GPP），再计算植物自养呼吸（Ra），最后得出草地净初级生产力（NPP）。TEM模型是气候驱动的生产力模型，所需的参数有：植被类型、土壤质地、土壤水分、潜在蒸散、太阳辐射、云量、降水、温度和大气CO2浓度；利用随机森林算法（RF）计算青藏高原草地潜在地上生物量，预测变量包含气候、土壤、地形等14个变量。气候变量包含生长季（5-9月）平均日较差、生长季总降水、生长季平均温度和非生长季（前一年10 - 当年4月）平均日较差、非生长季总降水、非生长季平均温度。地形变量包括高程、坡度、坡向。土壤变量包含土壤质地（砂、粉、粘土含量）、土壤pH值和土壤有机碳。\n实际净初级生产力和潜在净生产力数据年限为2000-2017；潜在草地地上生物量数据年限为（2014-2018）。","doi":"10.11888/Ecolo.tpdc.271204","projection":"","language":"zh","share_type":"protected","east":104.0,"west":73.0,"south":26.0,"north":39.0,"scale":null,"crs":null,"filesize":234.0,"share_policy":"a","ts_created":"2021-03-04T10:49:14.358096+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-04-19T21:06:35.148564+08:00","time_description":"","datas_group":0,"time_description_en":"","data_format":null,"project":[11],"specials":["f2a78cde-1c98-4241-94dc-7532eba32b80"],"cite":null,"review_status":5,"review_invite":[{"user_name":"张扬建","username":"naqu3228","email":"zhangyj@igsnrr.ac.cn","is_cancel_expert":true},{"user_name":"冯敏","username":"mfeng","email":"mfeng@itpcas.ac.cn","is_cancel_expert":false}],"review_editor":{"id":42421,"last_login":"2022-04-08T15:16:51.670544+08:00","username":"任慧霞","email":"510727846@qq.com","is_active":true,"is_staff":true,"user_name":"任慧霞"},"data_sources":null,"temporal_resolution":"Yearly","spatial_resolution":"100m - 1km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[6],"subtopics":{"metadata":"8a27d90b-0211-4629-8232-b088ee4536c0","three_pole":null,"third_pole":"XDA20020102"},"username":"XDA20020102","review_time":null,"protected_duration":24,"protected_describe":"数据还未发表，发表后可供下载","is_important":false,"hit_count":1287}