Monitoring of sustainable land management using remotely sensed vegetation cover, NSW, 2010-2021

This dataset provides maps and data that identify the sustainability of land management over NSW over the period 2010 to 2021. It is based on a new method for monitoring sustainable land management using widely available remotely sensed data: MODIS fractional vegetation cover data. The method relies on maintaining sufficient vegetation cover to prevent hillslope water erosion beyond tolerable soil erosion targets. The targets were based on long-term natural erosion rates plus a small constant and are spatially and temporally variable. Results were initially generated for individual months then were amalgamated into yearly sustainable land management indices (SLMI), presented as raster maps (100 m spatial resolution). These results were further stratified by land uses and natural resource management regions, revealing useful data and trends. Data on rainfall patterns over the preceding 12 months (relative rainfall index, RRI) can aid interpretation of the results. The method and sample results were presented in an international journal paper: Gray et al. (2023). Monitoring of sustainable land management using remotely sensed vegetation cover and variable tolerable soil erosion targets across New South Wales, Australia. https://doi.org/10.1111/sum.12876

本数据集提供了2010至2021年间新南威尔士州（New South Wales, NSW）土地管理可持续性的识别地图与配套数据。其基于一套全新的可持续土地管理监测方法，依托广泛可获取的遥感数据：即中分辨率成像光谱仪（MODIS）植被覆盖组分数据。该方法以维持充足植被覆盖、避免坡面水蚀突破可容忍土壤侵蚀阈值为核心准则，该阈值以长期自然侵蚀速率叠加小幅常量设定，且兼具空间与时间变异性。研究结果最初按单月生成，随后整合为年度可持续土地管理指数（Sustainable Land Management Index, SLMI），以空间分辨率100米的栅格地图形式发布。后续又依据土地利用类型与自然资源管理区域对上述结果开展分层分析，揭示了极具参考价值的数据特征与变化趋势。可结合前12个月降雨格局数据（相对降雨指数，Relative Rainfall Index, RRI）辅助解读研究结果。该方法与初步样本结果已发表于国际期刊论文：Gray等人（2023）。《澳大利亚新南威尔士州基于遥感植被覆盖与可变容忍土壤侵蚀阈值的可持续土地管理监测》，DOI: 10.1111/sum.12876