祁连山区域基于 Landsat 反射率数据的月度30m净初生产力数据（V1.0，2021）

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（即总初级生产力，Gross Primary Productivity，GPP）中扣除自养呼吸后的剩余部分，NPP作为陆地生态系统的水循环、养分循环和生物多样性变化的基础，是估算地球支持能力和评价陆地生态系统可持续发展的重要生态指标。本数据集包括祁连山区域2021年月度合成30m NPP产品。采用最大值合成（Max value composition, MVC）方法，利用Landsat8和sentinel 2红光和近红外两个通道的反射率数据，实现对地表月度NDVI产品的合成，进而计算NPP。

Net Primary Productivity (NPP) of vegetation refers to the remaining portion of the total organic matter produced by photosynthesis per unit time and per unit area by green plants (i.e., Gross Primary Productivity, GPP) after deducting autotrophic respiration. As the foundation of water cycle, nutrient cycle and biodiversity changes in terrestrial ecosystems, NPP is a critical ecological indicator for estimating Earth's carrying capacity and evaluating the sustainable development of terrestrial ecosystems. This dataset includes the 30 m monthly composite NPP product of the Qilian Mountains region in 2021. It adopts the Max Value Composition (MVC) method, utilizing the reflectance data of the red and near-infrared bands from Landsat 8 and Sentinel 2 to synthesize the monthly surface NDVI product, and then calculates the NPP.

搜集汇总

背景与挑战

背景概述

该数据集提供了2021年祁连山区域月度30米分辨率的净初生产力（NPP）数据，基于Landsat8和Sentinel 2的反射率数据，采用最大值合成方法计算NDVI后生成NPP。NPP是衡量陆地生态系统光合作用产物的关键生态指标，用于评估区域可持续发展和生态过程。