Changes of forest land use and ecosystem service values along Lao-Chinese border: A case study of Luang Namtha Province, Lao PDR |
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Authors: | Hemmavanh Chanhda Ci-fang Wu Yoshida Ayumi |
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Institution: | (1) Department of Land Resource Management, Zhejiang University, Hangzhou, 310029, P. R. China;(2) Zhejiang University Tea Research Institute, Hangzhou, 310029, P. R. China |
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Abstract: | Forest cover and land use change directly impact biological diversity worldwide, contribute to climate change and affect the
ability of biological systems to support human needs by altering ecosystem services. Given the forest land use characteristics
and ecosystem types in Luang Namtha Province, Lao PDR, the forest cover and land cover category of Luang Namtha Province were
divided into six classes, i.e., current forest (CF), potential forest (PF), other wooded areas (OW), permanent agricultural
land (PA), other non-forest areas (NF) and water (W). In first instance, earlier geographic information data (GIS data) of
forest cover and land use during 1992 and 2002 was obtained from the Ministry of Agriculture and Forestry (MAF), Lao PDR.
Two steps of forest land use change assessment were conducted by the MAF, i.e., plot sampling on satellite image maps (SIMs)
to detect the changes of forest cover and land use during 1992 and 2002 for the entire Luang Namtha Province and field verification
in order to identify causes of the changes. Secondly, dynamic information of the forest land cover changes during this ten-year
period was calculated by means of map algebra in ArcGIS 9.2. Thirdly, based on the theory of ecosystem service functions and
the service function values of different global ecosystems, the value of the six forest cover and land use categories in the
province was obtained. Finally, ecological environmental effects, produced by the regional land cover changes over the study
period, were calculated. |
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Keywords: | ecosystem services forest land use Luang Namtha Lao PDR |
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