一带一路及其毗邻区域0.25°分辨率植被生产潜力数据集（2015）

光温水生产潜力也称为气候生产潜力，是指除光照、温度、水资源条件对植被的限制外，其它的环境因素(二氧化碳、养分等）和作物群体因素处于最适宜状态，作物利用当地的光、温、水资源的潜在生产力，反映的是地区光温水资源综合作用的结果，可以利用光温生产潜力乘以水分限制因子得到。光温生产潜力是假定水分、土壤肥力、农业技术措施均处于最适宜条件，只由气温和辐射所决定的产量，是理论产量上限，是一种期望值。本数据利用“一带一路”陆域30m分辨率生态系统类型产品，分析了2015年陆域生态系统宏观结构以及各生态系统空间格局；利用1km分辨率叶面积指数、植被覆盖度、森林地上生物量和光温水胁迫因子等产品分析了2015年主要植被生态系统生产潜力。

Light-temperature-water production potential, also termed climatic production potential, refers to the potential crop productivity derived from local light, temperature and water resources, under the scenario where all other environmental factors (e.g., carbon dioxide, nutrients, etc.) and crop population attributes are at their optimal levels, with the constraints of light, temperature and water resources on vegetation excluded. It reflects the comprehensive impact of regional light, temperature and water resources, and can be quantified by multiplying light-temperature production potential with the water restriction factor. Light-temperature production potential refers to the yield determined exclusively by air temperature and solar radiation, under the assumption that water supply, soil fertility and agricultural management measures are all optimal. It represents the upper limit of theoretical yield and is an expected value. This dataset analyzes the macro structure of terrestrial ecosystems and the spatial patterns of various ecosystem types across the terrestrial region of the Belt and Road Initiative in 2015 using the 30 m resolution terrestrial ecosystem type product, and estimates the production potential of major vegetation ecosystems in 2015 by leveraging products including 1 km resolution Leaf Area Index (LAI), vegetation coverage, forest aboveground biomass and light-temperature-water stress factor.

搜集汇总

背景与挑战

背景概述

该数据集是2015年'一带一路'及其毗邻区域0.25°分辨率（约5公里）的植被生产潜力栅格数据，基于多源卫星遥感数据（包括国内卫星数据）通过协同定量遥感系统生成，用于分析区域植被的光、温、水气候生产潜力，反映光、温、水资源对植被生产力的综合影响。