[1]曾旭婧,邢艳秋*,单炜,等. 基于Mann-Kendall法的北黑高速沿线岛状冻土区植被退化分析[J].西北林学院学报,2017,32(2):22-29.[doi:10.3969/j.issn.1001-7461.2017.02.04]
 ZENG Xu-jing,XING Yan-qiu*,SHAN Wei,et al. Vegetation Degradation Analysis in the Island-shaped Permafrost Areas along Beian-Heihe Expressway Based on the Mann-Kendall Test[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2017,32(2):22-29.[doi:10.3969/j.issn.1001-7461.2017.02.04]
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 基于Mann-Kendall法的北黑高速沿线岛状冻土区植被退化分析()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第32卷
期数:
2017年第2期
页码:
22-29
栏目:
出版日期:
2017-03-31

文章信息/Info

Title:
 Vegetation Degradation Analysis in the Island-shaped Permafrost Areas along Beian-Heihe Expressway Based on the Mann-Kendall Test
文章编号:
1001-7461(2017)02-0022-08
作者:
 曾旭婧1邢艳秋1*单炜2张毅3王长青1
 (1.东北林业大学 森林作业与环境研究中心,黑龙江 哈尔滨 150040;2.东北林业大学土木工程学院,黑龙江 哈尔滨 150040;3.四川农业大学 资源学院,四川 成都 611130)
Author(s):
 ZENG Xu-jing1XING Yan-qiu1*SHAN Wei2ZHANG Yi3WANG Chang-qing1
 (1.Center for Forest Operations and Environment,Northeast Forestry University,Harbin,Heilongjiang 150040,China; 2.School of Civil Engineering,Northeast Forestry University,Harbin,Heilongjiang 150040,China; 3.College of Resources,Sichuan Agricultural University,Chengdu,Sichuan 611130,China)
关键词:
 Mann-Kendall检验岛状冻土植被退化NDVISen’s斜率估计
Keywords:
 Mann-Kendall test island-shaped permafrost vegetation degradation NDVI Sens slope estimator
分类号:
S771.8
DOI:
10.3969/j.issn.1001-7461.2017.02.04
文献标志码:
A
摘要:
 植被退化是影响陆地生态系统和气候变化的一个重要因素,分析植被退化特征对植被生态治理与保护具有重要意义。应用Mann-Kendall法对2000-2011年岛状冻土区的植被退化过程及影响植被退化的驱动因素进行分析。结果表明,植被退化区域占整个研究区面积的15.05%,其中严重退化区域比例占1.42%,其余13.63%为轻微退化;退化区域主要分布于北黑高速路段两侧地区、东北部大河口林场外围区域及河漫滩周围的沼泽地;降水量与植被指数表现为正相关性,显著性P<0.05,而气温显著性P>0.05,说明降水量是植被生长的主导因子;冻土退化产生地面渗水现象,归一化植被指数骤降0.26,同时在Mann-Kendall趋势曲线中突变点发生于2006年;岛状冻土退化伴随着土壤温度梯度发生显著的变化,植物的水分传导性脆弱,生长将受到抑制作用。研究结果可为高寒区生态系统的稳定发展和探寻水热条件变化规律提供空间数据支撑。
Abstract:
 Vegetation degradation is a significant factor in ecological degradation,which directly affects terrestrial ecosystems and climate change.Analyzing the character of vegetation degradation is of importance for ecological management and protection.In this paper,Mann-Kendall test was used for discussing the trends of vegetation degradation and degraded factor from 2000 to 2011 island-shaped permafrost (ISP) zone in the high-latitude.The results showed that the area of degraded vegetation accounted for 15.05% of the total area,of which 1.42% was seriously degraded and 13.63% was slightly degraded.Vegetation degradation region was mainly in the both sides of highway from Heihe to Beian,peripheral region of the northeast of the Dahekou woodland and the surroundings of floodplain marshes.Precipitation was positively correlated with vegetation index (P<0.05) and atmospheric temperature(P>0.05) ,indicating that the precipitation was the dominant factor of vegetation growth.With the degradation of ISP,there existed a ground water seepage phenomenon,and the normalized vegetation index dropped 0.26.The mutation point occurred in the Mann-Kendall trend curve in 2006.Meanwhile,permafrost degradation along with the soil temperature gradient had significant changes,and plant water conductivity becaome fragile,which inhibited vegetation growth.The results would provide spatial data support for the stable development of the ecosystem of alpine region and the exploration of hydrothermal condition variation.

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备注/Memo

备注/Memo:
 收稿日期:2016-10-25修回日期:2016-12-14
基金项目:国家部局级重点科研项目“多传感集成林木参数信息采集关键技术平台”。
作者简介:曾旭婧,女,在读硕士,研究方向:林业遥感。E-mail:jingle1992@163.com
*通信作者:邢艳秋,女,教授,博士生导师,研究方向:森工管理与林业信息工程。E-mail:yanqiuxing@nefu.edu.cn
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