Zhang Junmin, Li Yuqiao, Rong Cheng. Spatial and Temporal Characteristics of Land Use and Land Cover Change in Lijiang River Basin During 2000—2020[J]. Bulletin of Soiland Water Conservation, 2022, 42(2): 250-258.
DOI:
Zhang Junmin, Li Yuqiao, Rong Cheng. Spatial and Temporal Characteristics of Land Use and Land Cover Change in Lijiang River Basin During 2000—2020[J]. Bulletin of Soiland Water Conservation, 2022, 42(2): 250-258. DOI: 10.13961/j.cnki.stbctb.2022.02.034.
Spatial and Temporal Characteristics of Land Use and Land Cover Change in Lijiang River Basin During 2000—2020
[Objective] The temporal and spatial differentiation of land use and land cover change of the Lijiang River basin during 2000—2020 was analyzed in order to provide a basis for spatial governance for coordinated human activities and ecological security. [Methods] Based on remote sensing information identification and GIS spatial analysis platform
expansion intensity
transition matrix and time-space statistics and spatial self-organization methods were used to study the changing laws of land use and landscape structure. [Results] ① The main landscape of the Lijiang River basin was forest land and cultivated land
accounting for more than 90% of the landscape area. During 2000—2020
the area change rate was less than 0.37%
and the expansion intensity was less than 3.59% per year
indicating that the watershed had high-quality landscape ecology resources and ecological capital to build an international tourism center. Besides
its landscape structure was stable
and water ecology was good. ② Construction land had the fastest growth and significant expansion. Its area increased by 163.41% during 2000—2020
of which the average annual expansion of Lingui New District was 37.79%. Urbanization was the main driving force for landscape type and structural changes
and the water ecosystem was well maintained. ③ The watershed landscape types were rich in diversity
the landscape distribution was balanced. The diversity and evenness index formed a high-value center in cities and towns and tourism centers
while in mountainous areas
it was a low-value continuous area. The connectivity was good
the mountainous area was the high value center and the town was the low value center. Human activities had a significant disturbance to the grassland shape and the surrounding area of the town (median area). [Conclusion] The watershed landscape index structure is affected by similar occurrence environment and differentiation factors and that has spatial agglomeration distribution characteristics. Urban expansion and tourism activities are the main drivers of the differentiation of the landscape pattern of the Lijiang River basin. Regional development is more suitable for centralized urbanization and decentralized tourism.
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