期刊论文

Responsive sensitivity of nutrients in red soil profile to land use change

Sheng, H.

中文

生态学杂志

1000-4890

2018

37

9

2707-2716

10.13292/j.1000-4890.201809.028

国家自然科学基金项目（41571234） 湖南农业大学“1515”学术创新团队项目资助

本校为第一且通讯机构

为了解红壤剖面土壤养分及其有效形态的分布以及对高强度土地利用的响应,本研究选取位于湘东大围山低丘陵地带同一景观单元内花岗岩红壤发育的4 种毗邻的典型土地利用方式( 包括樟树天然林以及由此转变而来的杉木人工林、板栗园和坡耕地),采用自制土钻以20 cm 等间隔采集0 ～ 100 cm 土壤样品,测定各土层的pH、有机质、大量元素 ( 全氮、全磷、全钾) 及其有效态( 碱解氮、有效磷、速效钾) 、中量( 钙、镁) 和微量元素( 铁、锰、铜、锌) 有效态的含量,并计算不同养分的敏感性指数( SI),分析土壤养分对土地利用变化响应的敏感性.结果表明,天然林地改为其他土地利用方式,0 ～ 100 cm 土壤剖面有机质...

To understand the distribution of nutrients in soil profile and their responses to dramatic land use change, four adjacent land use systems, including natural forest, the resultantly converted Chinese fir plantation, Chinese chestnut orchard, and sloping cropland, were chosen. Those ecosystems were located at an identical landscape unit in the hilly region of Daweishan Mount, northeast Hunan Province. Soil samples of 0-100 cm were collected by soil auger with a 20 cm interval. The pH, soil organic matter, total and available macro-elements (tot...