The community in shrub forest owned both the characteristics of natural secondary forest and farmland, its dominant species were yellow mouse and squirrel too.
灌木疏林林地群落兼有天然次生林的啮齿动物群落和农田啮齿动物群落的特性，优势种为达乌尔黄鼠和松鼠类。
Investigation on the weed species and control techniques were done in 2001-2003. Speices and community distribution of weed had been found in farmland in Huaibei area.
2003年，进行了农田杂草调查及防治技术研究，基本摸清了淮北地区农田杂草种类和群落分布。
The structure of crop community plays an important ecological roles in farmland ecosystems.
作物群体结构具有重要的生态学意义。
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