面向土壤呼吸监测的控制域覆盖与多维信息融合计量研究

项目名称： 面向土壤呼吸监测的控制域覆盖与多维信息融合计量研究

项目编号： No.61303236

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 自动化技术、计算机技术

项目作者： 莫路锋

作者单位： 浙江农林大学

项目金额： 28万元

中文摘要： 土壤呼吸是影响大气CO2浓度的重要因素，客观评价土壤呼吸对气候变化的影响已成为全球碳循环研究的核心问题之一。由于土壤呼吸碳通量的时空异质性，传统选取少量特征点依次测量的方法无法准确监测区域土壤呼吸动态。本课题将无线传感网技术引入区域土壤呼吸动态监测，利用自主研制的支持无线传感网通信的单点土壤呼吸碳通量测量设备，研究(1)无线传感网控制域覆盖的环境自适应增量部署：根据已部署节点的实测数据，用贪心法推荐新增采样点的近似最优位置，然后对推荐位置进行实测评价，逐步增加采样点；(2)基于压缩感知的测量调度：利用数据时空相关性，选择便于稀疏化目标数据的表达基，以便用少量测量恢复目标数据；(3)多维协同的感知数据错误检测与修复和多维感知数据融合的区域土壤呼吸碳通量计算。本课题的成果可实现区域土壤呼吸碳通量的大尺度、全方位准确计量，并为节碳减排、碳交易或设施农业等应用提供准确可信的区域土壤呼吸碳通量数据。

中文关键词： 无线传感网；土壤呼吸监测；部署策略；采样调度策略；

英文摘要： Soil respiration is one of the important factors affecting the atmospheric CO2 concentration, so objective evaluation on the influence of soil respiration to climate change has become one of the key problems about the global carbon cycle. Because of the temporal and spatial heterogeneity of soil respiration carbon flux, current methods of selecting a few feature points and measuring asynchronously cannot accurately monitoring the dynamic of soil respiration. In this project we introduced wireless sensor network technology into the monitoring of dynamic of regional soil respiration. Using a single point of soil respiration carbon flux measurement device developed by ourselves that support wireless sensor network communication, we are going to do such researches as following: (1) adaptive incremental deployment for wireless sensor networks with control domain coverage, that is, pre-deploying positions are recommended with a greedy method and are evaluated by a substituting method according to the measured data from deployed nodes, and the evaluated result are used to determine whether the change pre-deployment to determined deployment; (2) measurement scheduling based on compressive sensing, that is, representation basis matrices to sparsify object data are selected taking advantage of the spatial-temporal correla

英文关键词： wireless sensor networks；soil respiration monitoring；deployment strategy；sampling scheduling strategy；