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In south meghalaya , farmers maintain a variety of economically important plant species in arecanut agroforestry systems .

在南梅加拉亚邦摈榔复合农林生态系统内，农民种有多种具有重要经济价值的植物。

Time lag effect between poplar 's sap flow velocity and microclimate factors in agroforestry system in west liaoning province .

辽西农林复合系统中杨树液流速率与气象因子的时滞效应。

This web site provides information about scientific research introduction , sustainable farming systems , plant protection , plant breeding and improvement , agroforestry , etc.

本网站提供了研究介绍、可持续农业体系、作物保护、作物与改良、农林产业等相关信息。

The study , presented at the world congress of agroforestry in nairobi this week , uses satellite images to show that almost half of farmed land worldwide has significant tree cover , most of it previously unmapped .

本周，在内罗毕世界农林代表大会展示出的这份报告，引用的卫星数据显示出将近一半的农田有数量可观的树木覆盖，并且这些森林以前从未在地图上标明。

From mankind ecology , vegetation construction , soil and water conservation , desertification control , eco-agriculture , and agroforestry , the meaning of eco-environment and the contents , main ways , of its construction are discussed so as to folly understand eco-environmental construction .

摘要由人类生态学、植被建设、水土保持与荒漠化防治、生态农业与农林复合经营等方面，讨论了生态环境的意义及其建设的内容、主要方式和过程，以期全面认识生态环境建设。