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[1]GAO Junliang,LUO Fengmin,DUAN Na,et al.Soil Nutrient and Stoichiometry Characteristics in Process of Oasisization in the Ulan Buh Desert Oasis, Inner Mongolia[J].Research of Soil and Water Conservation,2019,26(04):50-55.

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Soil Nutrient and Stoichiometry Characteristics in Process of Oasisization in the Ulan Buh Desert Oasis, Inner Mongolia

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 04 Page number: 50-55 Column: Public date: 2019-06-11

Title:: Soil Nutrient and Stoichiometry Characteristics in Process of Oasisization in the Ulan Buh Desert Oasis, Inner Mongolia

Author(s):: GAO Junliang, LUO Fengmin, DUAN Na, CHEN Xiaona, LIU Yuting, LUO Hongmei, HAO Yuguang; Inner Mongolia Dengkou Desert Ecosystem National Research Station/Experimental Center of Desert Forestry, Chinese Academy of Forestry, Dengkou, Inner Mongolia 015200, China

Keywords:: soil nutrient; stoichiometry; oasisization; Ulan Buh Desert Oasis

CLC:: S158.3;S153

DOI:: -

Abstract:: Ecological stoichiometry is the study of the balance of multiple chemical elements in ecological interactions, it is the important points and hotspot in ecology research. To illustrate the dynamic changes of soil ecological stoichiometry characteristics and soil carbon, nitrogen, phosphorus in the process of oasisization, a field study was conducted over a period of 24 years in Ulan Buh Desert Oasis, northwestern China. And the contents of soil organic carbon (SOC), total nitrogen (TN), total phosphorus (TP), available nitrogen (AN), available phosphorus (AP) were investigated. The results showed as follows. (1) The soil fertility of research area was at the low level. But with the extension of oasis construction time, soil nutrient contents showed the extremely remarkable linear increasing trend. (2) The trend of soil C:N, C:P, N:P and AN:AP showed the increasing trend first and then decreasing trend. Nevertheless, the time to reach the maximum was different in the process of oasisization. (3) The optimal fitting relationship between the soil nutrients and their stoichiometric ratios showed that C:N and C:P were dominated by C, and N:P was dominated by N, indicating that SOC and N contents determine the changing process of C, N and P stoichiometric characteristics in the studied area.

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