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应用埋袋法对毛乌素沙地天然分布的优势种臭柏、油蒿细根分解进行研究。对两年的实验数据进行分析,结果显示,臭柏、油蒿细根分解过程中C、P、K、Mg均表现为释放,释放率油蒿>臭柏,元素重量损失率K>P>C>Mg;N在臭柏分解中表现为积累,在油蒿分解中表现为释放;Ca在臭柏、油蒿细根分解中都表现为积累的趋势,积累率为油蒿>臭柏;能量在臭柏、油蒿细根分解过程中表现为释放。该研究为沙区土壤库中的能量转化和流动过程提供了理论依据。
Buried bag method was used to study the fine roots decomposition of Sabina vulgaris and Artemisia ordosica in natural distribution in Mu Us sandy land. The experimental data of two years showed that C, P, K and Mg were released and released in the process of fine root decomposition of Sabina vulgaris and Artemisia ordosica. Artemisia ordosica> Sabina vulgaris, the element weight loss rate K> P> C> Mg; N showed accumulation in Sabina vulgaris, and showed the release during the decomposition of Artemisia ordosica. Ca accumulated in the decomposition of Sabina vulgaris and Artemisia ordosica. The accumulation rate was Artemisia ordosica> Energy in Sabina, Artemisia fine root decomposition process for the release. This study provides a theoretical basis for the energy conversion and flow process in sandy soil bank.