摘要
本文在测定珠江口红树群落生物量和生产力的基础上，进一步测定红树群落各组分的氮、磷含量，计算群落氮、磷的贮量、年存留量、年归还量、年吸收量、周转期和富集率，以了解珠江口红树林氮、磷元素的累积和循环状况。
Influences of BaSb 2O 6 Crystal Phase in ZnO Varistor Ceramics has been investigated by means of admittance spectroscopy, complex impedance measurements and V～I characteristics. The excellent electric properties and stability under the long duration load voltage of the system ZnO-Bi 2O 3-Sb 2O 3-BaO result from an appropriate amount of BaSb 2O 6 phase that makes Schottky barrier height and grain-boundary resistance increasing and restains the formation of intrinsic defect Z ¨ n i .
关键词
红树林
元素累积
生物循环
珠江口
红树林
氮
磷
植物群落
ZnO varistor ceramics
BaSb 2O 6 Crystal Phase
Schottky barrier
grain-boundary resistance
intrinsic defect
