文章摘要
朱雅丽,施英俊,张绘芳,地力夏提·包尔汉,张景路,梁雪梅,雷亚君.1999-2016年天山西部植被覆盖的时空变化[J].水土保持通报,2018,38(4):301~307
1999-2016年天山西部植被覆盖的时空变化
Spatio-temporal Variations Analysis of Vegetation Coverage in Western Tianshan Mountain from 1999 to 2016
投稿时间:2018-02-02  修订日期:2018-03-22
DOI:10.13961/j.cnki.stbctb.2018.04.048
中文关键词: 植被覆盖度  霍城林场  归一化植被指数  地形因子
英文关键词: vegetation coverage  Huocheng forestry farm  normalized difference vegetation index  topographic factor
基金项目:自治区公益性科研院所基本科研业务项目“基于DEM的新疆山地主要森林类型分布规律及潜在分布区研究”(KY2017028)
作者单位E-mail
朱雅丽 新疆林业科学院 现代林业研究所, 新疆 乌鲁木齐 830000  
施英俊 兵团林业管理总站, 新疆 乌鲁木齐 830000  
张绘芳 新疆林业科学院 现代林业研究所, 新疆 乌鲁木齐 830000 396930128@qq.com 
地力夏提·包尔汉 新疆林业科学院 现代林业研究所, 新疆 乌鲁木齐 830000  
张景路 新疆林业科学院 现代林业研究所, 新疆 乌鲁木齐 830000  
梁雪梅 新疆林业科学院 现代林业研究所, 新疆 乌鲁木齐 830000  
雷亚君 新疆林业科学院 现代林业研究所, 新疆 乌鲁木齐 830000  
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中文摘要:
      [目的]调查天山西部生态环境植被覆盖状况,为科学保护区域生态环境和管理提供科学依据。[方法]以天山西部林区—霍城林场为研究对象,基于1999,2007和2016年3个时期的Landsat TM遥感影像和DEM数据,运用归一化植被指数分析研究区植被覆盖情况和空时变化特征。[结果]时间变化上,1999—2016年期间霍城林场植被覆盖以Ⅱ和Ⅲ级为主,所占比重达到55%以上,总体上是呈现上升趋势;空间分布上,霍城林场因海拔、坡度和坡向等地形因子的不同而出现不同的分布和变化特征,当海拔在1 500~2 000 m和2 000~2 500 m或者坡度30°~45°的区域时,植被覆盖度相对较高;当海拔 < 1 500 m以及 > 2 500 m或坡度 < 30°的区域时,植被覆盖度相对较低;植被覆盖度随着坡向的变化而变化着,呈现出阴坡 > 半阴坡 > 半阳坡 > 阳坡的分布特征;当海拔 < 1 500m和坡度 < 30°的区域时,植被覆盖度变化较为明显,而当海拔 > 2 500 m和坡度 > 45°的区域时,因受人为社会活动影响小,植被覆盖变化不明显。[结论]1999—2016年期间,霍城林场植被覆盖在时间变化上总体呈现上升趋势,在空间分布上因海拔、坡度和坡向等地形因子的不同呈现不同的分布和变化特征。
英文摘要:
      [Objective] The research investigated the vegetation coverage status of ecological environment in the study area in order to provide scientific evidences for environmental protection and management.[Methods] Taken a Western Tianshan mountains forest, Huoheng forestry farm as study area, the research applied the normalized vegetation index to analyze the status of vegetation coverage and spatio-temporal variational characteristics based on remote sensing images of TM/OLI and DEM data in 1999, 2007 and 2016 years.[Results] In temporal aspect, the vegetation coverage of Huocheng forest were mainly of grade Ⅱ and grade Ⅲ. The two grades accounted for more than 55% of the total coverage and generally showed an increasing trend. In spatial distribution aspect, the vegetation coverage presented different distribution and variation characteristics due to the differences of altitude, slope and terrain factors. Vegetation coverage of area was relatively high at the districts with altitude from 1 500 to 2 000 m or from 2 000 to 2 500 m, or when slope is between 30° to 45°. Otherwise, the vegetation coverage was relatively low. The vegetation coverage had a rank on following slopes:shady > semi-shady > semi-sunny slope > sunny slope. When altitude was less than 1 500 m and slope was greater than 30°, the change trend of vegetation coverage was obviously. However, when altitude was greater than 2 500 m and slope was more steep than 45°, the change trend of vegetation coverage was less significant resulting from the influence of human activities.[Conclusion] During the period from 1999 to 2016, the vegetation coverage of Huocheng forest farm showed an overall upward trend in time. In terms of spatial distribution, there are different distribution and variation characteristics due to different terrain factors such as altitude, slope and slope direction.
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