|本期目录/Table of Contents|

[1]路常宽,廖晓玉,王晓勤,等.灾害胁迫下建平县沙棘人工林的时空特性[J].应用与环境生物学报,2009,15(04):464-468.[doi:10.3724/SP.J.1145.2009.00464]
 LU Changkuan,LIAO Xiaoyu,WANG Xiaoqin,et al.Temporal-spatial Characteristics of Hippophae rhamnoides Plantations Under Disaster Stresses In Jianping, Liaoning, China[J].Chinese Journal of Applied & Environmental Biology,2009,15(04):464-468.[doi:10.3724/SP.J.1145.2009.00464]
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灾害胁迫下建平县沙棘人工林的时空特性
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
15卷
期数:
2009年04期
页码:
464-468
栏目:
研究论文
出版日期:
2009-08-25

文章信息/Info

Title:
Temporal-spatial Characteristics of Hippophae rhamnoides Plantations Under Disaster Stresses In Jianping, Liaoning, China
作者:
路常宽廖晓玉王晓勤刘艳华骆有庆
1北京林业大学森林培育与保护教育部重点实验室 北京 100083
2河北科技师范学院 秦皇岛 066600
3燕山大学信息科学与工程学院 秦皇岛 066004
Author(s):
LU ChangkuanLIAO XiaoyuWANG XiaoqinLIU YanhuaLUO Youqing
1Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China
2Hebei Normal University of Science and Technology, Qinhuangdao 066600, Hebei, China
3College Information Science and Engineering, Yanshan University; Qinhuangdao 066004, Hebei, China
关键词:
沙棘沙棘木蠹蛾灾害遥感时空特性
Keywords:
Hippophae rhamnoidesHolcocerus hippophaecolusdisasterremote sensingtemporal-spatial characteristics
分类号:
S763.305 : S793.602
DOI:
10.3724/SP.J.1145.2009.00464
文献标志码:
A
摘要:
辽宁省建平县沙棘衰退主要是干旱胁迫和沙棘木蠹蛾蛀食危害复合作用的结果,本文统称沙棘灾害. 选择建平县东北部作为实验区,利用5期TM遥感图像研究沙棘林的光谱反射特征,并计算样地的归一化植被指数(NDVI),得到了多年沙棘植被变化特征. 研究结果表明,NDVI增加表明沙棘林生长状况良好,而下降则表明在灾害胁迫下沙棘人工林出现衰退. 结合地面数据,初步明确了沙棘灾害程度的NDVI临界值,以NDVI下降幅度至≤0.1为轻度受灾区,NDVI下降幅度在<0.1≤0.25为中等受灾区,NDVI下降幅度>0.25为严重受灾区. 应用RS与GIS相结合方法,对研究区的遥感影像进行人机交互解译,得到5期土地利用类型分布以及面积统计,结果表明,1991~2004年间沙棘面积显著减少,主要向耕地、荒地与裸地转化. 本文研究结果为实时动态、大面积监测沙棘人工林灾害奠定了基础. 图5 表2 参21
Abstract:
The degradation of seabuckthorn (Hippophae rhamnoides) plantations is mainly caused by drought and seabuckthorn carpentermoth (Holcocerus hippophaecolus) in Jianping County, Liaoning, China. Northwest Jianping was chosen as study area to approach the feasibility of dynamic monitoring of the damage extent and temporal-spatial characteristics of seabuckthorn disaster (called by this paper). According to TM images taken in 1991, 1993, 1997, 2001 and 2004, the spectral feature of H. rhamnnoides was analyzed, Normalized difference vegetation index (NDVI) was computed in order to detect the dynamics of degradation of H. rhamnoides. Comparisons of multi-temporal NDVI changes show that the increase in NDVI indicated the undamaged areas, whereas the decrease in NDVI indicated the damaged areas. Coupled with the ground truth data, critical values of NDVI for different damaged degrees were determined, that is, NDVI≤0.1 indicates mild damage, 0.1<NDVI≤0.25 moderate damage, and decreased NDVI >0.25 is heavy damage. Combining RS with GIS, land use type distribution and area statistics were derived by interpreting the TM images on computer. It was shown that the cultivated areas of H. rhamnnoides significantly decreased from 1991 to 2004, and they mainly became farmland, deserted land and bare land. These findings provide a scientific basis for preventing and combating seabuckthorn disaster. Fig 5, Tab 2, Ref 21

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备注/Memo

备注/Memo:
国家自然科学基金重点项目(No. 30730075)和北京林业大学森林培育与保护教育部重点实验室开放基金项目(No. B20060308)