气候变化和人类活动对天山北坡净初级生产力变化的影响  

Effects of climate change and human activities on net primary productivity in the Northern Slope of Tianshan,Xinjiang,China

作　　者：尹小君[1] 祝宏辉[2] Gao Gerry 高军 郭丽洁 王娇娇 Yin Xiaojun;Zhu Honghui;Gao Jerry;Gao Jun;Guo Lijie;Wang Jiaojiao(College of Information Science and Technology,Shihezi University,Shihezi 832000,China;College of Economics and Management,Shihezi University,Shihezi 832000,China;Department of Computer Engineering,San Jose State University,California 95192,USA;Anhui Sichuang Electronic Co.,Ltd.,Hefei 230000,China)

机构地区：[1]石河子大学信息科学与技术学院,石河子832000 [2]石河子大学经济与管理学院,石河子832000 [3]圣何塞州立大学计算机工程系,加州95192 [4]安徽四创电子股份有限公司,合肥230000

出　　处：《农业工程学报》2020年第20期195-202,共8页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家重点研发计划项目(2016YFB0504203);石河子大学国际合作项目(GJHZ201905)。

摘　　要：天山北坡是中国农牧业发展基地,也是“一带一路”开发重点区域。气候变化和人类活动是影响天山北坡净初级生产力(Net Primary Productivity,NPP)的2个重要因素,定量评估气候变化和人类活动对天山北坡草场可持续性利用具有重要意义。该研究采用MODIS C6遥感数据、气象数据和野外实测数据,分析2004-2015年气候变化和人类活动对天山北坡NPP变化的影响。结果表明:2004-2015年天山北坡实际净初级生产力(Actual Net Primary Productivity,NPPA)介于128.67~170.49 g/(m^2·a)之间,总体呈现增加趋势;西部区域NPPA年均值最高,天山北坡NPPA的主要供给区是中西部区域。天山北坡不同区域年均温度及降水量呈现明显差异,降水对NPPA的影响大于温度。同时,人类活动对NPP的影响(Human Activities on Net Primary Productivity,NPPH),总体上由负作用逐渐向正作用转变,正作用增强区域主要分布在奇台县、木垒县和天山北坡东部部分地区,负作用逐渐增强区域主要分布在奎屯市及乌苏市部分地区。The northern slope of Tianshan has become an important development base of agriculture and animal husbandry,particularly for the key area of“one belt,one road”.The investigation of Net primary productivity(NPP)in this area is absolutely essential to the sustainable development of agriculture and animal husbandry,due to the NPP can serve as a significant indicator of ecological environment evaluation.However,most previous studies of NPP mainly focused on the simulation of NPP under a model in a specific period.Therefore,this study aims to analyze the change of NPP from 2004 to 2015,and further investigate the impact of climate change and human activities on the NPP change.The remote sensing image data in the long time series was used to quantify the global variation of NPP subjected to the climate change and human activities.The specific procedure was as follows:First,the image data collected from a MODIS C6 remote sensing was used to simulate the actual net primary productivity(NPPA)for 12 years,and the simulated NPPA was verified by biomass data measured from the field,indicating that the MODIS C6 remote sensing data was feasible to simulate NPPA.Then,the change trends of temperature,precipitation,and NPPA were analyzed in the past 12 years,to clarify the influence of temperature and precipitation on NPPA.Finally,the net primary productivity(NPPH)was selected to explain the effect of human activities on the Northern Slope of Tianshan.The results show that:the actual NPPA at the Northern Slope of Tianshan ranged from 128.67 to 170.49 g/(m^2·a)from the period of 2004 to 2015,with an average annual value of 144.71 g/(m^2·a).There were obvious differences in the spatial characteristics of NPPA in different regions,showing a trend of high in the West and low in the East.The annual average of NPPA in the western region was the highest,indicating that the central and western regions were the main supply areas of NPPA on the Northern Slope of Tianshan.Specifically,the change rates of temperature and precipitation

关 键 词：遥感 气候变化 NPP 人类活动 天山北坡 MODIS C6 

分 类 号：S127[农业科学—农业基础科学]