[1]ZHAO Fangyuan,YANG Yuxiang,ZHANG Huatang,et al.Analysis on Dynamic Change of Land Use and Landscape Pattern[J].Research of Soil and Water Conservation,2021,28(03):235-241.
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Analysis on Dynamic Change of Land Use and Landscape Pattern
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 03
Page number:
235-241
Column:
Public date:
2021-04-20
- Title:
- Analysis on Dynamic Change of Land Use and Landscape Pattern
- CLC:
- F301.2, P901
- DOI:
- -
- Abstract:
- In order to analyze the change of land use types and the trend of construction planning in the Danghe River Basin in Gansu Province from 2012 to 2018, the distribution of land use types in the Danghe River basin in 6 years was obtained by interpreting remote sensing images. The above trends were analyzed from the three perspectives of land use type time, space and landscape pattern dynamic change. The results showed that:(1)from the perspective of time change, the total decrease of forestland was the largest, accounting for 0.47%(82.13 km2), and the total increase of construction land was the largest, accounting for 0.20%(35.10 km2); the largest reduction of suitable forest land was 12.55%(86.36 km2); the large reduction of suitable forestland is the main contribution source of forestland area reduction;(2)from the perspective of spatial change, the amount of unused land transferred in 6 years was the largest, reaching to the area of 107.76 km2; the transferred area of middle woodland was the main contribution source, and the transferred area is 88.72 km2; the maximum amount of the transferred forest land was 72.68 km2 during the period from 2012 to 2014, and the unused land transferred to forest land from 2016 to 2018 was 50.45 km2; the area of construction land continue to increase, with the largest contribution being the transfer amount of unused land of 13.15 km2; from 2012 to 2018, land use types showed a general trend of forest land degradation turning into unused land, and unused land returning to forest land and turning to construction land after ecological construction was strengthened;(3)from the perspective of dynamic changes of landscape pattern, the landscape fragmentation of each region in the past 6 years generally presented the increasing trend, with the largest landscape fragmentation of construction land and a large and rapidly increasing landscape shape index of construction land, indicating that the regional fragmentation of construction land with more human activities was high and its shape was more complex. The above research results are of great significance to understand and protect the ecological environment of Danghe River Basin, rationally develop and utilize land resources and implement policies of land protection and utilization.
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Last Update:
2021-04-20