这些条件有助于进化出用于支撑枝干的结构、运输水分和养分到植物各部分的导管以及储存水分的结构。
These conditions favored the evolution of the structures that support the body, vessels that transport water and nutrients to all parts of plant, and structures that conserve water.
相应地，当一定的植被建立后，可对土壤物理特性的改良和土壤养分的固定、转化、储存产生积极意义，提高土壤的整体质量。
Accordingly, some established vegetation made positive sense to improve soil physical property, and fix, convert and store soil nutrient, and then improve soil integrated quality.
结果表明，地下部储存的养分占总积累的比重较大。同时叶部养分向树体转移能力较强。
The results show that larger proportion of nutrient is stored in root and more nutrients can transfer from leaf to stem.
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