Global Patterns of HANPP, v1 (1995)

The Global Patterns in Human Appropriation of Net Primary Productivity (HANPP) portion of the HANPP Collection represents a digital map of human appropriation of net primary productivity measured in units of elemental carbon on a one-quarter degree global grid. Net primary productivity (NPP), the net amount of solar energy converted to plant organic matter through photosynthesis, can be measured in units of elemental carbon and represents the primary food energy source for the world's ecosystems. Humans appropriate net primary productivity through the consumption of food, paper, wood and fiber, which alters the composition of the atmosphere, levels of biodiversity, energy flows within food webs and the provision of important ecosystem services. The data set is distributed by the Columbia University Center for International Earth Science Information Network (CIESIN).

搜集汇总

背景与挑战

背景概述

该数据集是一个全球范围内人类占用净初级生产力（HANPP）的数字化地图，以元素碳为单位，覆盖四分之一度的全球网格，反映了1995年人类活动对生态系统能量流动的影响。数据集由哥伦比亚大学国际地球科学信息网络中心（CIESIN）分发。