[1]王娟,卓静,何慧娟,等.2000-2013年秦岭林区植被净初级生产力时空分布特征及其驱动因素[J].西北林学院学报,2016,31(5):238-245.[doi:10.3969/j.issn.1001-7461.2016.05.39]
 WANG Juan,ZHUO Jing,HE Hui-juan,et al. Changes of Vegetation Net Primary Productivity and Its Driving Factors from 2000 to 2013 in Qinling Mountainous Area[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2016,31(5):238-245.[doi:10.3969/j.issn.1001-7461.2016.05.39]
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2000-2013年秦岭林区植被净初级生产力时空分布特征及其驱动因素()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第31卷
期数:
2016年第5期
页码:
238-245
栏目:
出版日期:
2016-09-30

文章信息/Info

Title:
 Changes of Vegetation Net Primary Productivity and Its Driving Factors from 2000 to 2013 in Qinling Mountainous Area
文章编号:
1001-7461(2016)05-0238-08
作者:
 王娟卓静何慧娟董金芳
 (陕西省农业遥感信息中心,陕西 西安 710014)
Author(s):
 WANG JuanZHUO JingHE Hui-juanDONG Jin-fang
 (Remote Sensing Information Center for Agriculture in Shaanxi Province,Xian ,Shaanxi 710014,China)
关键词:
 NPP秦岭林地时空格局驱动因子
Keywords:
 NPP Qinling Mountainous area spatio-temporal pattern drving factor
分类号:
S718.556
DOI:
10.3969/j.issn.1001-7461.2016.05.39
文献标志码:
A
摘要:
 秦岭林地是我国南北气候分水岭同时也是陕西省重要林区,研究秦岭地区植被NPP变化有助于了解该区域植被生长状况及固碳能力。使用MODIS17A3数据及各环境因子数据,通过应用GIS及数学统计等方法,分析了秦岭林区植被NPP的时空变化格局及其与环境因子间关系。结果表明,秦岭林地植被NPP均值呈现西高东低的特征, 2000-2013年植被NPP均值在400~600 gC·m-2·a-1之间;研究区内NPP年际变化上升趋势;在具有地理意义的区间上,200~1 500 m的高程区间及2°~25°坡度区间内植被NPP均值及总量较高,1 500 m以上及25°以上区间植被NPP均值与总量均呈下降趋势;阔叶林及灌丛占植被类型的60.36%,所占NPP总量达162.38 TgC·a-1,粘土及粘壤土所占NPP总量达151.39 TgC·a-1,所有植被类型及土壤类型NPP年际变化均呈上升趋势;NPP与年均气温相关性较与年降雨量高,但65.55%的区域未通过显著性检验。
Abstract:
 Qinling mountainous area is the climate watershed in north and south China,also an important forest region in Shaanxi Province.Changes of vegetation net primary productivity (NPP) in Qinling mountainous area are very important to understand the regional vegetation growth and carbon sequestration ability.By using the data of MODIS17A3 and various environmental factors,and the methods of GIS and mathematical statistics,the spatial and temporal variations of vegetation NPP in Qinling forests and its relationship with environmental factors were investigated.The results indicated that:The mean value of NPP in Qinling mountainous area showed a trend of high in west and low in east,and the NPP ranged from 400 to 600 gC·m-2·a-1 in 2000-2013.NPP interannual variability showed a rising trend in the study area.The mean vegetation NPP and the total amount were higher in the altitudinal range of 200-1 500 m,and 2°-25° slope range; while,the NPP displayed a downtrend in the range above 1 500 m and up 25°.Broad-leaved forest and scrub accounted for 60.36% of vegetation types,accounted for the total NPP was 162.38 TgC·a-1; Clay and clay loam accounted for the total NPP was 162.38 TgC·a-1; all the interannual variability of NPP in vegetation and soil types was on rising.The correlation between NPP and annual average temperature was higher than the annual rainfall,but 65.55% of the area did not pass the significance test.

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备注/Memo

备注/Memo:
 收稿日期:2015-11-17修回日期:2016-03-25
基金项目:陕西省气象局科技创新基金计划项目(2013M-18)。
作者简介:王娟,女,工程师,研究方向:遥感应用。E-mail:wangj_81@126.com
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