The grassland is the largest terrestrial ecosystem in China,and greenhouse gas fluxes such as CO2,CH4 and N2O play an important role in the global climate chang
超高频射频识别(Ultra High Frequency Radio Frequency Identification,UHF RFID)应用于土壤样品管理可大幅度提升管理信息化水平,然而土壤及标签天线贴附方式都对超高频RFID标签天线性能有影响。采用电磁仿真软件Ansoft HFSS对超高频RFID标签天线的性能进行仿真分析,并通过天线理论探究了标签贴附方式、样品瓶中土壤含量对于标签天线性能的影
[Objective] The paper was to study wind break and sand fixation functions of forage plants in desert area. [Method] Based on the survey data of four major wind