降水量变化与氮添加下荒漠草原土壤酶活性及其影响因素
朱湾湾1,2, 王攀2, 许艺馨2, 李春环2, 余海龙2, 黄菊莹1,*(
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Soil enzyme activities and their influencing factors in a desert steppe of northwestern China under changing precipitation regimes and nitrogen addition
ZHU Wan-Wan1,2, WANG Pan2, XU Yi-Xin2, LI Chun-Huan2, YU Hai-Long2, HUANG Ju-Ying1,*()
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图2. 土壤酶活性与植物生物量的关系。A、B、C、D和E分别表示牛枝子、草木樨状黄耆、白草、针茅和糙隐子草的种群生物量。F代表群落生物量。SA、UA和PA分别代表蔗糖酶、脲酶和磷酸酶活性。*、**和***分别表示p < 0.05、p < 0.01和p < 0.001。
Fig. 2. Relationships between soil enzyme activities and plant biomass. A, B, C, D and E represent the population biomass of Lespedeza potaninii, Astragalus melilotoides, Pennisetum centrasiaticum, Stipa capillata, Cleistogenes squarrosa, respectively. F represents the community biomass. SA, UA, and PA represent sucrase, urease, and phosphatase activities, respectively. *, ** and *** indicate p < 0.05, p < 0.01 and p < 0.001, respectively.
