PROGRESS IN GEOGRAPHY ›› 2010, Vol. 29 ›› Issue (4): 471-477.doi: 10.11820/dlkxjz.2010.04.012

• Original Articles • Previous Articles     Next Articles

A Review on Researching Scale Effect of Net Primary Productivity Based on Remote Sensing

WEI Yaxing1,2, WANG Liwen2   

  1. 1. Center for Marine Economic and Sustainable Development, Liaoning Normal University, Dalian 116029, China.
    2. College of Urban and Environmental Science, Liaoning Normal University, Dalian 116029, China
  • Received:2009-08-01 Revised:2009-12-01 Online:2010-04-24 Published:2010-04-24

Abstract:

Remote sensing is often used to simulate net primary productivity (NPP) of vegetation on the surface land. It has become an important direction of simulating NPP. With the rapid development of data process capability of remote sensing technology and physiology-ecology research based on remote sensing observations , dynamic quantitative observations of large scale ecosystem pattern and process have become possible. Multi-source satellite sensors have sent abundant multi-scale earth observing data, and images level system with various resolutions has been made. Therefore, simulating NPP derived from quantitative remote sensing has multi-scale problems. When remote sensing data of various resolutions are input in the NPP model as parameters, the simulated NPP values as outputs of the NPP model will be obviously different. In order to improve the precision of simulating NPP, the effect of simulated NPP results from remote sensing data derived at different resolutions should be fully studied, and that is the scale effects of the NPP model. In the paper, study examples of scale effect of remote sensing are discussed. Research cases of monitoring NPP distribution variation using multi-resolution remote sensing data and recent research progresses of scale effect of simulating NPP are also presented. In addition, future trend of researching scale effect of NPP by remote sensing is also discussed in detail.

Key words: net primary productivity, remote sensing, scale effect