| 陈学武.张掖市人工林区域水源涵养能力与覆盖面积空间
差异动态模拟分析[J].林业调查规划,2024,49(5):147-152 |
| 张掖市人工林区域水源涵养能力与覆盖面积空间
差异动态模拟分析 |
| Dynamic Simulation Analysis of Spatial Differences of Water ConservationCapacity and Coverage Area of Artificial Forests in Zhangye City |
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| DOI： |
| 中文关键词: 水源涵养能力 空间差异动态模拟 覆盖面积 人工林区域 张掖市 |
| 英文关键词: water source conservation capacity dynamic simulation of spatial differences coverage area artificial forest areas Zhangye City |
| 基金项目:甘肃省重大水利科技项目(202000620). |
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| 中文摘要: |
| 为明确张掖市人工林水源涵养能力和生态恢复效果,对张掖市人工林区域水源涵养能力计量及其空间差异动态进行模拟分析。采集当地水源涵养能力影响因素数据,计算水源涵养量,划分水源涵养能力等级。借助ArcGIS软件模拟分析空间差异动态,模拟得出张掖市2017—2021年的水源涵养能力空间分布特征。结果表明,2017年张掖市东部靠边缘区域水源涵养能力等级非常高,西北角和东部中间区域等级较高,等级一般区域主要分布在水源涵养能力等级较高地区的周边,等级较低区域主要分布在西部、东北部、中部以及南部等地区,等级非常低区域主要分布在南部区域。2018年水源涵养能力等级非常高区域覆盖面积存在零散扩大分布特征,等级较高区域覆盖面积向西南方向扩大且西北角与东部中间区域连通,其余等级覆盖面积则相应减少。2019—2020年水源
涵养能力非常高、较高地区所占面积进一步扩大,其余等级覆盖面积则相应继续减少。2021年,具有非常高、较高水源涵养能力等级面积已覆盖当地人工林大部分区域并已延伸至西南部边缘,其余等级区域所占面积则继续缩小。研究表明,张掖市人工林区域具有提高水源涵养和生态恢复能力,据此提出提高灌木和草地种植量,在含水量较高区域种植经济林和针叶林等种植策略。 |
| 英文摘要: |
| In order to clarify the water conservation capacity and ecological restoration effect of artificial
forest areas in Zhangye City, the water conservation capacity measurement and its spatial difference dynamics
of artificial forest areas in Zhangye City were simulated and analyzed. The data on the influencing
factors of local water conservation capacity was collected to calculate the amount of water conservation, and classify the level of water conservation capacity. The spatial distribution characteristics of water conservation
capacity in Zhangye City from 2017 to 2021 were simulated by using ArcGIS tool to simulate and
analyze the spatial difference dynamics. The results showed that in 2017, water conservation capacity in
the eastern edge of Zhangye City was very high, the northwest corner and the eastern middle region were
high, the regions with average level were mainly distributed around the regions with high water conservation
capacity, the regions with low level were mainly distributed in the western, northeastern, central,
and southern regions, and the regions with very low level were mainly distributed in the southern region.
In 2018, the coverage area of the region with very high water conservation capacity had a scattered and
expanded distribution feature. The coverage area of the region with high water conservation capacity had
expanded towards the southwest and the northwest corner was connected with the middle area of the east,
the coverage area of other grades was correspondingly reduced. From 2019 to 2020, the area occupied by
very high and high areas would be further expanded, while the area covered by other grades would continue
to decrease accordingly. By 2021, the area with a very high and high water conservation capacity level
had covered most of the local artificial forest area and had extended to the southwest edge, while the area
of the other level areas continued to shrink. This paper proved that the artificial forest land in Zhangye
City had the ability to improve the water conservation capacity and ecological restoration effect, and accordingly
put forward planting strategies such as increasing shrub and grassland planting, and planting economic
forests and coniferous forests in areas with high water conservation capacity. |
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