Value Analysis on Ecosystem Services in the Area Affected by the Road Network in Lhasa
The road network in Lhasa in 2000 and 2020 was selected as the research object.Based on the LUCC data in 2000 and 2020,the buffer analysis method and the land use transfer matrix were used to analyze the land use transfer in the zone affected by the road network,and then by reconsidering adding the construction land factor and revising the ESV equivalent of the study area accord-ing to the national unit area ESV equivalent table,the temporal and spatial evolution trend of its ESV was explored.The results show that:1)The area of cultivated land decreased from 2000 to 2020,and the areas of forest land,water area,construction land and un-used land increased in different degrees,and grassland still dominated under the influence of road network for many years;2)The flow of ESV in the area is generally reduced;3)The single ecological service types of ESV within 16-20 km in the north affected by the road network are the most,including raw material production,climate regulation,soil conservation and maintenance of nutrient cy-cle.Its ESV reduced from the lower value area where most of the area is within the range to the low value area.
NETL
NSTL
万方数据
