利用树轮资料和植被指数估测青海云杉林地上净初级生产力  

Estimation of Piceacrassifolia forest aboveground net primary productivity from tree ring data and vegetation index

作　　者：范文武[1,2,3] 凌飞龙[1] 田昕[2] 汪小钦[1] 闫敏[2] FAN Wenwu LING Feilong TIAN Xin WANG Xiaoqin YAN Min(Key Laboratory of Spatial Data Mining ＆ Information Sharing of Ministry Education,Fuzhou University, Fuzhou, Fujian 350002, China Institute of Forest Resources Information Techniques,Chinese Academy of Forestry,Beijing 100091,China Chongqing Geomatics Center,Chongqing 401120,China)

机构地区：[1]福州大学空间数据挖掘与信息共享教育部重点实验室,福建福州350002 [2]中国林业科学研究院资源信息研究所,北京100091 [3]重庆市地理信息中心,重庆401120

出　　处：《福州大学学报（自然科学版）》2017年第3期348-354,共7页Journal of Fuzhou University(Natural Science Edition)

基　　金：中央级公益性科研院所基本科研业务费专项资金资助项目(IFRIT201302);国家重点基础研究发展计划资助项目(2013CB733404)

摘　　要：利用MODIS产品MOD13A3、样地调查数据和树轮资料等数据,构建回归模型以估测祁连山森林保护区的青海云杉林地上净初级生产力(ANPP).结果表明:经质量权重S-G滤波后,回归模型的估测精度有所提高;2000-2013年祁连山森林保护区青海云杉林ANPP呈现波动上升的趋势,空间分布特征为东南多西北少,多年平均森林ANPP为51.34~274.24 g·m^(-2);青海云杉林ANPP与降水和温度呈正相关,受温度变化影响较小,降水成为影响其变化的主要因子.The M0 D13A3 EVIproducts, forest inventory data and tree ring data were used to estimate-ANPP of Piceacrassifolia in nature reserve of Qilian Mountainby the regression model. The performance of iEVI in estimating ANPP was improved after the quality weighted S-G method. The annual forest ANPP showed a fluctuant increasing trend from 2000 to 2013 in the nature reserve of Qilian Mountain. Furthermore, the ANPP increased from the northwest to the southeastern and the annual average AN- PP was 51.34-274.24g·m^-2. The ANPP of Piceacrassi/Olia加 as positively correlated with precipitatio-nand temperature. Compared with the temperature, the precipitation is main factor affecting the change of ANPP.

关 键 词：青海云杉 地上净初级生产力 增强植被指数 树轮资料 

分 类 号：S757[农业科学—森林经理学]