生物生产力是指生物及其群体甚至更大尺度(包括生态系统及生物圈)生命有机体的物质生产能力，它随环境不同而发生变化，因此，它又成为环境变化和地球系统健康与否的指示物。
植被的净初级生产力(Net Primary Productivity，NPP)指绿色植物在单位时间单位面积上由光合作用产生的有机物质总量(GPP)中扣除自养呼吸(Autotrophic Respiration，Ra)后的剩余部分。
黑河流域的NPP产品主要围绕光能利用率模型的重要参数PAR以及FPAR进行了算法的改进和产品生产.提出了区分直射与散射辐射的FPAR反演模型以及基于静止与极轨卫星相结合的PAR反演方法。最终，利用光能利用率模型，生产黑河流域净初级生产力数据集。算法提高了数据产品的时空分辨率，产品精度也有了明显提高。
", "ds_source": "生物生产力是指生物及其群体甚至更大尺度(包括生态系统及生物圈)生命有机体的物质生产能力，它随环境不同而发生变化，因此，它又成为环境变化和地球系统健康与否的指示物。", "ds_process_way": "
黑河流域的NPP产品主要围绕光能利用率模型的重要参数PAR以及FPAR进行了算法的改进和产品生产.提出了区分直射与散射辐射的FPAR反演模型以及基于静止与极轨卫星相结合的PAR反演方法。
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2013-01-01 00:00:00", "ds_acq_end_time": "2014-12-31 00:00:00", "ds_acq_place": "黑河流域,中游人工绿洲试验区,上游寒区水文试验区,下游天然绿洲试验区", "ds_acq_lon_east": 101.98, "ds_acq_lat_south": 37.019999999999996, "ds_acq_lon_west": 95.99, "ds_acq_lat_north": 43.01, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 5164809, "ds_files_count": 2, "ds_format": "hdr", "ds_space_res": "/", "ds_time_res": "年", "ds_coordinate": "WGS84", "ds_projection": "/", "ds_thumbnail": "901d5490-b74d-482e-8849-113ee3c1c676.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "本数据由“黑河生态水文遥感试验（HiWATER）”产生，用户在使用数据时请在正文中明确声明数据的来源，并在参考文献部分引用本元数据提供的引用方式。", "ds_from_station": null, "organization_id": "c94b3578-20da-4346-9de9-c702b6ca8983", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2021-08-31 11:30:45", "last_updated": "2025-06-30 16:34:44", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.NIEER.2021.1871", "i18n": { "en": { "title": "Heihe River eco hydrological remote sensing experiment: Heihe River Basin net primary productivity (NPP) data set (2013-2014)", "ds_format": "hdr", "ds_source": "Biological productivity refers to the material production capacity of organisms and their groups and even larger scale (including ecosystem and biosphere). It changes with different environments. Therefore, it has become an indicator of environmental change and the health of the earth system.", "ds_quality": "
Good data quality
", "ds_ref_way": "", "ds_abstract": "Biological productivity refers to the material production capacity of organisms and their groups and even larger scale (including ecosystem and biosphere). It changes with different environments. Therefore, it has become an indicator of environmental change and the health of the earth system
Net primary productivity (NPP) of vegetation refers to the remaining part of the total organic matter (GPP) produced by photosynthesis per unit time and unit area of green plants after deducting autotrophic respiration (RA)
The NPP products in Heihe River Basin mainly focus on the algorithm improvement and product production of the important parameters par and FPAR of the light energy utilization model. An FPAR inversion model distinguishing direct and scattered radiation and a par inversion method based on the combination of stationary and polar orbiting satellites are proposed. Finally, the light energy utilization model is used to produce the data set of net primary productivity in Heihe River Basin. The algorithm improves the spatial-temporal resolution of data products and the product accuracy
", "ds_time_res": "年", "ds_acq_place": "Heihe River Basin, artificial oasis test area in the middle reaches, hydrological test area in the upper cold area, and natural oasis test area in the lower reaches", "ds_space_res": "/", "ds_projection": "/", "ds_process_way": "The NPP products in Heihe River Basin mainly focus on the algorithm improvement and product production of the important parameters par and FPAR of the light energy utilization model. An FPAR inversion model distinguishing direct and scattered radiation and a par inversion method based on the combination of stationary and polar orbiting satellites are proposed
", "ds_ref_instruction": "This data is generated by \"Heihe eco hydrological remote sensing experiment (hiwater)\". When using the data, users should clearly state the source of the data in the text and quote the reference method provided by this metadata in the reference part." } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "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": [ "NPP", "散射", "净初级生产力", "直射", "卫星遥感产品", "光能利用率模型", "生态遥感产品" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "上游寒区水文试验区", "黑河流域", "下游天然绿洲试验区", "中游人工绿洲试验区" ], "ds_time_tags": [ 2013, 2014 ], "ds_contributors": [ { "true_name": "李丽", "email": "lili3982@radi.ac.cn", "work_for": "中国科学院遥感与数字地球研究所遥感科学国家重点实验室", "country": "中国" }, { "true_name": "仲波", "email": "zhongbo@radi.ac.cn", "work_for": "中国科学院遥感与数字地球研究所遥感科学国家重点实验室", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "李丽", "email": "lili3982@radi.ac.cn", "work_for": "中国科学院遥感与数字地球研究所遥感科学国家重点实验室", "country": "中国" } ], "ds_managers": [ { "true_name": "李丽", "email": "lili3982@radi.ac.cn", "work_for": "中国科学院遥感与数字地球研究所遥感科学国家重点实验室", "country": "中国" } ], "category": "生态" }