Citation: | YANG Tao, YAN Xiaojuan, ZHAO Hansen, WANG Peng, ZHU Tao, CAI Haojie, ZUO Xugang, XI Rengang, ZHANG Yulian, WANG Lishe, WU Shuo. 2023. Land use changes of Weihe River Basin and it's influence on the ecological spatial pattern[J]. Geology in China, 50(5): 1460-1470. doi: 10.12029/gc20220325004 |
This paper is the result of monitoring and evaluating engineering of natural resources.
As a new expansion business of China Geological Survey in 2021, the comprehensive survey of natural resources aims to serve land and space planning, use control and ecological protection and restoration.
Based on the monitoring data of land use/cover change in the watershed in 2000, 2010, and 2020, ArcGIS software was used to analyze the spatiotemporal changes in land use types and ecological space of Weihe River Basin.
The results show that: 1) during 2000-2010, 804.4 km2, 350.3 km2 and 327.6 km2 of cropland converted into grassland, forest and constructive land respectively, while only 94.3 km2 grassland, 10.4 km2 forest and 1.2 km2 constructive land converted into cropland; 2) during 2010-2020, 16646.8 km2, 3024.5 km2 and 2547.9 km2 of cropland converted into grassland, forest and constructive land respectively, while 16867.7 km2 grassland, 3103.6 km2 forest and 2528.82 km2 constructive land converted into cropland; 3) during 2000-2020, the conversion of ecological space land in this region reaches 48,165 km2, of which the ecological→semi-ecological land was 20172 km2, the semi-ecological→ecological land was 20,897 km2, the weak ecological→semi-ecological land was 2,519 km2, and the semi-ecological→weak ecological land was 2754 km2. It reflects that the conversion of ecological space land in the region tends to balance and the quality of the ecosystem is slowly increasing.
The results is of great significance for accelerating comprehensive regionalization of natural resources and optimizes "three-zone and the-lines" of the Territorial Spatial Plan in the Weihe River Basin.
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Geomorphology and the spatial distribution patterns of ecological space of Wei River Basin
Spatial distribution of land use types of Wei River Basin in 2020
Spatial regionalization and distribution map of land use changes of Wei River Basin from 2000 to 2010
Spatial regionalization and distribution map of land use changes of Wei River Basin from 2010 to 2020