A global land-use data cube 1992-2020 based on the Human Appropriation of Net Primary Production: Dataset 8

This dataset is part of the LUIcube, a global dataset on land-use at 30 arcsecond spatial resolution. The LUIcube includes information on area, the change in NPP due to land conversions (HANPPluc), the harvested NPP (including losses, HANPPharv), and the NPP remaining in ecosystems after harvest (NPPeco) for 32 land-use classes in annual time-steps from 1992 to 2020. A detailed description of the LUIcube is available in the accompanying publication. The layers of land-use areas are provided in square kilometers (km²) per grid cell. All NPP flows are provided in tC/yr per grid cell. Adding HANPPharv to NPPeco results in the actual NPP available before harvest (NPPact=NPPeco+HANPPharv), and adding HANPPluc to NPPact results in the potential NPP available in the hypothetical absence of land use (NPPpot=NPPact+HANPPluc) for the given land-use class. Area-intensive values (in gC/m²/yr) can be calculated by dividing the NPP flows by the area of the respective land-use class per grid cell. HANPP in % of NPPpot can be calculated by summing up HANPPharv and HANPPluc and dividing it by NPPpot. Areas and NPP flows of land-use classes can be aggregated to calculate their overall HANPP. This Zenodo repository provides data on following land-use classes: cropland used for production of beans (CL-BEAN); other pulses (CL-OPUL); groundnuts (CL-GROU); bananas and plantains (CL-BANP)本数据集隶属于LUIcube——一款空间分辨率为30弧秒的全球土地利用数据集。LUIcube涵盖了1992至2020年年度时间步长下，32类土地利用类别的面积数据、土地转换引发的净初级生产力（Net Primary Productivity，NPP）变化量（HANPPluc）、收获型净初级生产力（含损耗，HANPPharv）以及收获后生态系统留存的净初级生产力（NPPeco）。LUIcube的详细说明可参见配套发表文献。 土地利用面积图层以每网格单元平方千米（km²）为单位提供。所有净初级生产力通量均以每网格单元吨碳每年（tC/yr）为单位给出。将HANPPharv与NPPeco相加，可得到给定土地利用类别收获前的有效净初级生产力（NPPact = NPPeco + HANPPharv）；将HANPPluc与NPPact相加，则可得到假设不存在土地利用时的潜在净初级生产力（NPPpot = NPPact + HANPPluc）。单位面积强度值（单位为克碳每平方米每年，gC/m²/yr）可通过将每网格单元内的净初级生产力通量除以对应土地利用类别的面积计算得到。以NPPpot占比表示的HANPP可通过将HANPPharv与HANPPluc求和后除以NPPpot计算得到。可通过汇总各类土地利用类别的面积与净初级生产力通量，计算得到其总HANPP。 本Zenodo知识库提供以下土地利用类别的数据：用于豆类种植的耕地（CL-BEAN）、其他杂豆耕地（CL-OPUL）、花生耕地（CL-GROU）以及香蕉与大蕉耕地（CL-BANP）。