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4. 土壤酶活性与微生物生态化学计量特征及其他环境因子的冗余分析(RDA)。SA、UA和PA分别代表蔗糖酶、脲酶和磷酸酶活性。TP、C:Ps和N:Ps分别代表土壤全P含量、C:P和N:P。MBC、MBN、MBP、C:Nm和C:Pm分别代表微生物生物量C、N、P含量, C:N和C:P。NH4+-N、NO3--N分别代表土壤NH4+-N、NO3--N含量。
Fig. 4. Redundancy analysis (RDA) of soil enzyme activities and microbial ecological stoichiometry and other environmental factors. SA, UA, and PA represent sucrase, urease, and phosphatase activities, respectively. TP, C:Ps and N:Psrepresent soil total phosphorus content, C:P and N:P, respectively. MBC, MBN, MBP, C:Nm and C:Pm represent microbial biomass carbon, nitrogen, phosphorus content, C:N and C:P, respectively. NH4+-N, NO3--N represent soil ammonium nitrogen, nitrate nitrogen content, respectively.
