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半干旱草地长期封育演替进程中针茅植物根系格局动态变化
【机 构】
：
西北农林科技大学动物科技学院 中国科学院水利部水土保持研究所
【出 处】
：
第十五届中国生态学大会
【发表日期】
：
2016年4期
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