秦岭山地NPP遥感估算及其时空变化特征研究  

Remote-sensing Estimation of NPP and Its Spatial-temporal Change Characteristics in Qinling Mountainous Region

作　　者：张善红[1] 丁小松[2] ZHANG Shan-hong DING Xiao-song(College of Urban, Rural Planning and Architectural Engineering, Shangluo University, Shangluo 726000, China College of Marine Science, Shanghai Ocean University, Shanghai 201306, China)

机构地区：[1]商洛学院城乡规划与建筑工程学院,陕西商洛726000 [2]上海海洋大学海洋科学学院,上海201306

出　　处：《江西农业学报》2017年第8期124-128,共5页Acta Agriculturae Jiangxi

基　　金：国家林业公益性行业科研专项项目(201304309);商洛学院科研基金项目(14SKY017)

摘　　要：基于2000~2013年的MODIS-NDVI数据和气象数据,利用CASA模型对秦岭山地植被净第一生产力(NPP)进行了模拟估算。结果表明:2000~2013年秦岭山地植被年均NPP为833.87 g C/(m^2·a);不同类型植被的NPP表现为栽培植被<草丛<草甸<针叶林<灌丛<阔叶林;各季植被的NPP表现为夏季>春季>秋季>冬季;秦岭山地植被NPP与当月气温及前1个月、2个月、3个月气温均呈显著正相关,但受当月气温的影响最大。Based on the MODIS-NDVI data and meteorological data from 2000 to 2013, the net primary productivity （NPP） of vegetation in the Qinling mountainous region was estimated by using CASA model. The results showed that the average annual NPP of vegetation in the Qinling mountainous region during 2000-2013 was 833.87 g C/（ m2·a）. The NPP of various types of regent!on revealed the following sequence： cultural vegetation 〈 grass cluster〈 meadow〈 coniferous forest〈 bushwood 〈 broad- leaved forest. The NPP of vegetation in different seasons had the order of summer〉 spring〉 autumn〉 winter. The average monthly NPP of vegetation in the Qinling mountainous region had a significantly positive correlation with the average air temperature in the current month, before one month, before two months, and before three months, but it was influenced most greatly by the average air temperature in the current month.

关 键 词：秦岭山地 植被 NPP 遥感估算 时空变化 

分 类 号：S771.8[农业科学—森林工程]