青藏高原耕地利用强度要素数据（1985-2020）

在第二次青藏高原综合考察专项的资助下，课题组收集了青藏高原的县级统计数据，将青藏高原的县级农业指标数据，主要为化肥使用量、农药使用量、地膜使用量、灌溉面积、机械总动力，根据DEM、人口分布、NPP等辅助数据，空间化至栅格图上，将各指标数据标准化，采用熵权法确定各项指标权重后集总，得出各耕地栅格的利用强度，最后采用等距离间隔分为5类，其中1为低强度利用，2为中低强度利用，3为中强度利用，4为中高强度利用，5为高强度利用。Supported by the Second Tibetan Plateau Scientific Expedition and Research Program (STEP), the research team collected county-level statistical data of the Tibetan Plateau. The core county-level agricultural indicator data collected include fertilizer application amount, pesticide usage amount, plastic film mulching application amount, irrigated area, and total mechanical power. These indicators were spatially disaggregated into raster maps using auxiliary datasets such as DEM, population distribution, and NPP. Each indicator was standardized first, then the weight of each indicator was determined via the entropy weight method, followed by aggregation to calculate the utilization intensity of each cropland raster. Finally, the utilization intensity was classified into 5 categories using equal-interval classification: 1 denotes low-intensity utilization, 2 denotes low-medium intensity utilization, 3 denotes medium-intensity utilization, 4 denotes medium-high intensity utilization, and 5 denotes high-intensity utilization.

搜集汇总

背景与挑战

背景概述

该数据集提供了1985年至2020年青藏高原耕地利用强度的时空数据，基于化肥、农药、地膜使用量、灌溉面积和机械总动力等县级统计指标，结合DEM、人口分布和NPP辅助数据，通过空间化和熵权法计算，将利用强度分为五类。数据具有1-10年时间分辨率和100m-1km空间分辨率，覆盖东经73°-104°、北纬26°-40°区域，适用于土地利用变化和农业可持续性分析。