多年生人工草地对沙质土壤呼吸作用的影响

摘要/Abstract

摘要：

在鄂尔多斯沙地改良试验站的撂荒地和退耕地,测定和分析了多年生人工草地对土壤呼吸速率的影响。结果表明,撂荒地上建植人工草地后土壤呼吸速率明显增高,人工建植草地土壤呼吸速率与撂荒地的土壤呼吸速率差异达到极显著水平(P<0.01);建植于退耕地上的无芒雀麦草地的土壤呼吸速率略高于玉米地土壤呼吸速率。撂荒地和退耕地上建植的无芒雀麦草地土壤呼吸速率高于冰草草地土壤呼吸速率。而施有机肥会提高人工草地的土壤呼吸。

关键词: 土壤呼吸速率, 土壤有机碳, 冰草, 无芒雀麦

Abstract:

An analysis on the effect of cultivated grassland on soil respiration rate was conducted for the abandoned land and the transferred farmland in the Ordos Sandy Land Improvement Experimental Station. The soil respiration rate of the cultivated grassland which established on abandoned sandy land was higher than that of abandoned sandy land, their difference was significant(P<0.01). The soil respiration rate of Bromus inermis grassland which established on transferred farmland was slightly higher than that of Zea mays land. Compared with Agropyron cristatum grassland, Bromus inermis grassland had higher soil respiration rate. Nevertheless, organic manure could heighten the soil respiration rate of cultivated grasslands.

Key words: soil respiration rate, soil organic carbon, Agropyron cristatum, Bromus inermis

中图分类号:

S154.4

套格图;赵吉;孙启忠. 多年生人工草地对沙质土壤呼吸作用的影响[J]. 中国沙漠, 2008, 28(2): 301-305.

Taogetu;ZHAO Ji;SUN Qi-zhong. Effect of Perennial Cultivated Forage on Soil Respiration of Sandy Land[J]. JOURNAL OF DESERT RESEARCH, 2008, 28(2): 301-305.

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