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冀北坝上不同樟子松林的土壤养分及其与林木生长的关系 预览

Soil Nutrients of Different Pinus sylvestris var. mongolica Plantations in Northern Bashang Area of Hebei Province
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摘要 为了解冀北坝上地区樟子松人工林的土壤条件及其与生长的关系,采用典型取样方法对塞罕坝机械林场樟子松林的土壤进行了研究。结果表明,不同立地樟子松林的土壤养分含量有明显不同,各养分元素均以坝上山地壤质土和坝下山地壤质土为最高,坝上西部曼甸砂质土和坝下平地壤质土最低;坝上和坝下地区土壤养分含量总体上较为接近,但是坝下地区不同林地之间土壤养分含量的差异明显〉坝上地区。樟子松林土壤中全氮、水解氮、全磷、速效磷、全钾、速效钾的含量均随有机质的增加而增加,而且具有明显的回归关系,但回归关系的形式各不同,可基于回归关系通过有机质含量来估测其他土壤养分元素的含量。樟子松优势木树高与土壤养分含量之间没有表现出明显的正相关关系,但与土壤厚度有正的相关关系,樟子松适宜土层深厚的立地条件,而对土壤养分含量要求不高。 In order to understand the soil nutrients of Pinus sylvestris var. mongolica in northern Bashang (upper dam) aera of Hebei Province and the relationship between the soil nutrient conditions and the growth, typical sampling method was adopted. The main results were as follows. There were distinct differ- ences in contents of nutrient elements among different forests in different sites, the highest content was found in loamy soil in the upper dam mountain and loamy soil in the down dam mountain, and the lowest was in sandy soil in upper dam western Mandian and in loamy soil in the flat land under dam. The contents of soil nutrients on the dam area were generally close to that of under dam,but the differences of the soil nutrient contents in different forest areas under darn were obviously greater than that on the dam area. The contents of total N avilable N, total P, available P, total K, available K in the soil increased with the increase of organic matter, and there was a close regression relationship between them. However, the form of the re- gression relationship was different. On the basis of regression relation,the contents of other soil nutrients were estimated by organic matter. It did not show a significant positive correlation between the dominant tree height and the contents of the soil nutrient, but there was a positive correlation between dominant height and soil thickness. In summary, P. sylvestris var. mongolica was suitable to grow in deep soil site, but the requirement for soil nutrient content was not high.
作者 丁丽 许晴 许中旗 张菲 张岩 程顺 崔同祥 DING Li1 , XU Qing1 , XU Zhong-qi1 , ZHANG Fei2 , ZHANG Yan2 , CHENG Shun2 , CUI Tong-xiang2 (1. Key Laboratory of Genetic Resources of Forest and Forest Protection of Hebei Province, College of Forestry, Agricultural University of Hebei, Baoding, Hebei 071000, China; 2. Sanhanba Mechanical Forest Farm, Weichang, Hebei 068450, China)
出处 《西北林学院学报》 CSCD 北大核心 2018年第1期49-55,共7页 Journal of Northwest Forestry University
基金 河北省林业科学技术研究应用研究类指导性计划项目“高寒山区樟子松人工林经营关键技术研究与示范(1416464) 国家林业公益性行业科研专项“燕山山地典型森林类型健康经营技术”(20100400205).
关键词 樟子松人工林 土壤养分 有机质 冀北坝上地区 Pinus sylvestris var. mongholica plantation soil nutrient soil organic matter Northern Bas-hang Aera of Hebei Province
作者简介 丁丽,女,硕士研究生,研究方向:森林生态学。E-mail:lixs920528@163.com;通信作者:许中旗,男,教授,研究方向:森林生态学。E-mail:xzq7110@163.com
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