Abstract
Edge effect is one of the hotspots in ecological research, while the edge effect of biomass is rarely analyzed. Most studies at ecosystem scale get data from field transect inventory. This paper analyzed the edge effect of biomass at the forest-farmland boundary in the upper Min River. The information of vegetation on landscape boundaries was derived from field investigation and Landsat TM satellite images. The correlativity between biomass and NDVI showed the latter can be used as biomass. Then the NDVI was analyzed as well as biomass was done, and Moving Split-windows Analysis was used to quantitatively determine the range of edge effect. The results were as following: 1) On forest-farmland boundary, biomass of forest edge was lower than that of forest interior, with edge effect depth ranged from 60 m to 65 m, while biomass of farmland was higher than that of farmland interior, with edge effect depth ranged from 60 m to 90 m. 2) Edge effect depth of biomass detected from field data had comparable result with that based on NDVI. Therefore, NDVI is reliable in analyzing edge effect on biomass. 3) As for study scale, a range of 200 m to 300 m is enough and applicable, and a grid of 30 m is better than 10 m.
| Original language | English |
|---|---|
| Pages (from-to) | 87-91 |
| Number of pages | 5 |
| Journal | Zhongshan Daxue Xuebao/Acta Scientiarum Natralium Universitatis Sunyatseni |
| Volume | 46 |
| Issue number | 2 |
| State | Published - Mar 2007 |
| Externally published | Yes |
Keywords
- Biomass
- Edge effect
- Forest-farmland boundary
- NDVI