凋落物输入变化和氮添加对半干旱草原群落生产力及功能群组成的影响

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嘎玛达尔基¹^,², 杨泽¹^,², 谭星儒¹^,², 王珊珊¹^,², 李伟晶¹^,², 游翠海¹^,², 王彦兵¹^,², 张兵伟¹^,³, 任婷婷¹^,², 陈世苹¹^,²^,^*(

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Effect of altered litter input and nitrogen addition on ecosystem aboveground primary productivity and plant functional group composition in a semiarid grassland

GAMADAERJI ¹^,², YANG Ze¹^,², TAN Xing-Ru¹^,², WANG Shan-Shan¹^,², LI Wei-Jing¹^,², YOU Cui-Hai¹^,², WANG Yan-Bing¹^,², ZHANG Bing-Wei¹^,³, REN Ting-Ting¹^,², CHEN Shi-Ping¹^,²^,^*(

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图6. 不同氮处理条件下, 地上净初级生产力(ANPP)、土壤温度(Ts)、土壤含水量(SWC)及其季节变异(CV_SWC)与上一年添加的凋落物质量间的相关关系。图中标出相关系数(R²)和差异显著性分析结果(*, p < 0.05; **, p < 0.01; ***, p < 0.001)。N0, 无氮添加; N1, 氮添加。

Fig. 6. Correlation analysis of aboveground net primary productivity (ANPP), soil temperature (Ts), soil water content (SWC) and its variation (CV_SWC) with litter biomass added in the previous year under each nitrogen treatment. The correlation coefficient (R²) and significance levels are presented in the figure (*, p < 0.05; **, p < 0.01; ***, p < 0.001). N0, nitrogen-free control; N1, nitrogen addition.