| 引用本文: | 麦麦提吐逊·麦麦提,马合木江·艾合买提,陶洪飞,等.基于遥感1996—2017年疏勒县植被覆盖时空变化分析研究[J].灌溉排水学报,0,():-. |
| maimaitituxun·maimaiti,mahemujiang·aihemaiti,taohongfei,et al.基于遥感1996—2017年疏勒县植被覆盖时空变化分析研究[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 摘要：【目的】评价疏勒县生态环境质量及生态环境演变过程，可以通过监测不同时期植被覆盖度的变化来实现。【方法】基于Landsat遥感影像数据，利用归一化植被指数NDVI、像元二分模型、中心迁移模型等方法分析疏勒县植被覆盖时空演化。【结果】结果表明：（1）疏勒县植被覆盖分布总体以高植被覆盖为主成大面积片状分布，中、低覆盖主要以盖孜河和克孜河为轴线，相对围绕高植被覆盖分散分布；（2）过去22年以来，疏勒县植被覆盖面积和覆盖度均呈增加趋势。2017年的植被覆盖面积比1996年增加了456.4km2，增加率为38.3%；（3）疏勒县植被覆盖空间变化上存在一定的区域性和时段性差异。区域上，南部乡镇覆盖度明显增加；时段上，2009—2013年植被覆盖面积增加最明显；（4）过去22年，疏勒县植被覆盖中心整体往东南迁移；（5）气候变暖对疏勒县植被覆盖度变化有一定的影响，但人类活动影响更大。灌区改造高效节水、耕地开垦、农作物的种植及林带面积的增加是植被覆盖面积增加的主要因素。【结论】综上可知，气候变暖和生态治理工程等人类活动因素可能是疏勒县植被覆盖面积与覆盖度呈增加的主要原因，这表明疏勒县生态环境保护与治理是科学合理的。 |
| 关键词: 疏勒县；植被覆盖度；NDVI像元二分模型；中心迁移模型；时空变化 |
| DOI： |
| 分类号:Q948;TP79 |
| 基金项目:2020年新疆维吾尔自治区创新环境建设专项计划-自然科学计划青年科学基金项目（项目编号：2020D01B31） |
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| Spatial and Temporal Analysis of Vegetation Coverage in Shule County Based on Remote Sensing from 1996 to 2017 |
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maimaitituxun·maimaiti1, mahemujiang·aihemaiti1, taohongfei2, liqiao2
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1.新疆农业大学;2.College of Water Conservancy and Civil Engineering, Xinjiang Agricultural University
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| Abstract: |
| Abstract: 【Objective】In order to evaluate the quality of the regional ecological environment and the evolution process of the ecological environment, it can be achieved by monitoring the temporal and spatial changes of vegetation coverage in different periods. 【Method】Based on Landsat remote sensing image data, the spatial-temporal evolution of vegetation cover in Shule County was analyzed using normalized vegetation index NDVI, pixel dichotomy model, and center migration model. 【Result】The results show: (1) The overall vegetation cover distribution in Shule County is mainly a high-vegetation coverage in a large area, and the middle and low coverage are mainly distributed along the Gaizi River and the Kezihe River, which are relatively scattered around the high vegetation coverage; (2) Over the past 22 years, the vegetation coverage and coverage in Shule County have both increased. The area covered by vegetation in 2017 increased by 456.4 km2 over 1996, an increase rate of 38.3%;(3) There are some regional and temporal differences in the spatial variation of vegetation cover in Shule County. Regionally, the increase in coverage of towns and villages in the south has increased significantly; during the period, the area of vegetation cover increased most significantly from 2009 to 2013;(4) In the past 22 years, the entire vegetation cover center of Shule County moved to the southeast; (5) Climate warming has a certain indirect impact on the change of vegetation coverage in Shule County, but the impact of human activities is the most direct. Among them, the most important factors for the improvement of irrigation coverage include efficient water conservation, cultivated land reclamation, crop planting, and increase in forest belt area. At the same time that vegetation has increased, water consumption in agricultural irrigation areas has also increased, causing a reduction in the area of regional water bodies and posing a certain threat to regional sustainable development. 【Conclusion】In summary, human activity factors such as climate warming and ecological treatment projects may be the main reasons for the increase in vegetation coverage and coverage in Shule County, which indicates that the ecological environment protection and management of Shule County are scientific and reasonable. |
| Key words: Shule County; Vegetation coverage; NDVI pixel binary model; Center migration model; Spatial-temporal change |
