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选择4种人工林,包括3个乡土树种(阔叶合欢(Albizia lebbeck)、黄豆树(A.procera)、柚木(Tectona grandis))和一个乡土草种(印度实竹(Dendrocalamus strictus))的高密度人工幼林,研究了人工林发育早期阶段对印度Singrauli煤矿废弃地土壤养分的影响。在4种人工林4年生和5年生阶段,采集0-10、10-20cm层土壤,分析其总有机碳、全氮和全磷含量。结果表明,林龄、树种和土层对土壤总有机碳、全氮和全磷含量的影响存在显著差异;各林分10-20cm土层中的全总有机碳、全氮和全磷含量较低;4个不同林分对土壤养分的改良效果表现为:阔叶合欢>印度实竹>黄豆树>柚木。说明人工林对煤矿废弃地土壤的改良效果因树种而异。
Four plantations were selected, including three native species (Albizia lebbeck, A. procera, Tectona grandis) and one indigenous species (Dendrocalamus strictus) Density young plantations to study the effects of early development of plantation on soil nutrients in the wasteland of Singrauli mine in India. Soil samples of 0-10, 10-20 cm soil layers were collected from the 4-year and 5-year-old stands of 4 kinds of plantations, and their total organic carbon, total nitrogen and total phosphorus were analyzed. The results showed that there was a significant difference in the total organic carbon, total nitrogen and total phosphorus in soil between stand ages, tree species and soil layers. The contents of total organic carbon, total nitrogen and total phosphorus in 10-20cm soil layers Low; 4 different stand on the soil nutrient improvement effect as follows: Acacia> Indian real bamboo> soybean> teak. This shows that the improvement effect of plantation on the soil in abandoned coal mines varies with the tree species.