降雨量和土壤氮含量对半干旱沙质草地生产力的影响 |
张晶, 左小安, 吕朋 |
Effects of soil nitrogen content and rainfall on vegetation productivity in semi-arid sandy grassland |
Jing Zhang, Xiaoan Zuo, Peng Lv |
图4 氮添加对沙质草地植被特征的影响 |
Fig.4 Effects of nitrogen addition on vegetation characteristics in sandy grassland |
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