Effect of Stand Density and Soil Layer on Soil Nutrients of a 37-year-old Cunninghamia lanceolata Plantation in Naxi, Sichuan Province, China
Effect of Stand Density and Soil Layer on Soil Nutrients of a 37-year-old Cunninghamia lanceolata Plantation in Naxi, Sichuan Province, China
复制标题
四川纳溪37年杉木人工林林分密度和土层对土壤养分的影响
DOI：
10.3390/su11195410
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发表时间：
2019-09
期刊：
影响因子：
3.9
通讯作者：
Zhang Jianguo
中科院分区：
文献类型：
--
作者：
Lei Jie;Du Hailun;Duan Aiguo;Zhang Jianguo
为研究不同密度和土层条件下杉木林分土壤养分特征和生物量的变化，以杉木（Cunninghamia lanceolata（Lamb.）以四川省纳溪县5种密度（A：1667株·ha-1; B：3333株·ha-1; C：5000株·ha-1; D：6667株·ha-1; E：10,000株·ha-1）的Hook）密度试验林为研究对象。测定了11个土壤理化性质指标、林下植被和凋落物生物量。结果表明：（1）林分密度对土壤养分含量、林下植被和枯落物生物量有显著影响。低密度有利于土壤有机质、水解氮、速效磷、速效钾和全钙的积累。(2)随着土层深度的增加，土壤有机质、全氮、水解氮、全磷含量逐渐降低，pH值和全钙含量逐渐降低，速效磷含量呈现降低-升高-降低的趋势。土层对土壤全K、全Fe、全Mg含量无显著影响。(3)低密度（密度A或B）有利于林下植被和林木的生长、养分的归还、土壤的长期保持和杉木林的稳产高产。
In order to study the characteristics of soil nutrient elements and the changes in biomass under different densities and soil layers of forest stand, this paper considers Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) density test forests with five densities (A: 1667 trees·ha−1; B: 3333 trees·ha−1; C: 5000 trees·ha−1; D: 6667 trees·ha−1; E: 10,000 trees·ha−1) as the research objects, located in Naxi District, Sichuan Province, China. Eleven soil physical and chemical property indicators, understory vegetation, and litter biomass were measured. The results were as follows: (1) The stand density had a significant effect on the soil nutrient content, understory vegetation, and litter biomass. A low density is conducive to the accumulation of soil organic matter, hydrolytic N, available P, available K, and total Ca. (2) With the increase in soil depth, the contents of soil organic matter, total N, hydrolytic N, and total P decreased gradually; pH and total Ca decreased gradually; and available P showed a trend of decrease-up-decrease. The soil layers had no significant effect on the total K, total Fe, and total Mg concentrations. (3) Low density (density A or B) was found to be beneficial to the growth of undergrowth vegetation and forest trees, the return of nutrients, long-term soil maintenance, and the stable high yield of Chinese fir plantations.
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影响因子：
4.9
作者：
Shauna M. Uselman;R. Qualls;R. Thomas
通讯作者：
Shauna M. Uselman;R. Qualls;R. Thomas
影响因子：
3.9
作者：
Zhang Lei
通讯作者：
Zhang Lei
影响因子：
3.8
作者：
R. Venanzi;R. Picchio;G. Piovesan
通讯作者：
R. Venanzi;R. Picchio;G. Piovesan
DOI：
--
发表时间：
2001
期刊：
--
影响因子：
--
作者：
Li Xiao
通讯作者：
Li Xiao
影响因子：
--
作者：
汪金松 Wang Jinsong;张春雨 Zhang Chunyu;范秀华 Fan Xiuhua;范娟 Fan Juan;夏富才 Xia Fucai
通讯作者：
汪金松 Wang Jinsong;张春雨 Zhang Chunyu;范秀华 Fan Xiuhua;范娟 Fan Juan;夏富才 Xia Fucai