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| 流动沙漠腹地防护林土壤肥力质量垂直演化与评价 | |
| 引用本文： | 靳正忠,雷加强,李生宇,徐新文,邱永志,谷峰,刘小路. 流动沙漠腹地防护林土壤肥力质量垂直演化与评价[J]. 土壤学报, 2010, 47(6): 1075-1085 |
| 作者姓名： | 靳正忠 雷加强 李生宇 徐新文 邱永志 谷峰 刘小路 |
| 作者单位： | 1. 中国科学院新疆生态与地理研究所,乌鲁木齐830011;中国科学院绿洲生态与荒漠环境重点实验室,乌鲁木齐830011 2. 中国科学院新疆生态与地理研究所,乌鲁木齐,830011 3. 中国石油天然气股份有限公司塔里木油田分公司,新疆库尔勒,841000 |
| 基金项目： | 国家科技攻关计划;国家自然科学基金项目（面上项目，重点项目，重大项目） |
| 摘 要： | 采用土壤肥力综合指数(IFI)评价法对塔里木沙漠公路防护林地土壤肥力质量垂直演化作了定量评价。结果表明:塔里木沙漠公路防护林建设后不同土层土壤的物理结构逐渐变好,透水、透气、持水能力有所增强;随防护林年限的增长,不同土层土壤生物活性提高,土壤微生物生物量碳、氮、磷的增加以及六种酶活性的增强促进了土壤养分的转化,多数养分因子在不同土层间差异明显;定植年限较长的防护林地土壤盐分含量增加,有表聚现象;同一林地不同土层之间土壤综合肥力指数差异很小,但与林木生长指标有较大相关性。在现有咸水滴灌条件下,塔里木沙漠公路防护林地土壤肥力质量良性发展。 |
| 关 键 词： | 防护林地 土壤肥力质量 垂直变化 综合评价 |
| 收稿时间： | 2009-01-09 |
| 修稿时间： | 2010-04-08 |
Vertical variation and evaluation of soil fertility quality of windbreak forest soil in the hinterland of rolling desert |
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| Jin Zhengzhong. Vertical variation and evaluation of soil fertility quality of windbreak forest soil in the hinterland of rolling desert[J]. Acta Pedologica Sinica, 2010, 47(6): 1075-1085 | |
| Authors: | Jin Zhengzhong |
| Affiliation: | Xinjiang Institute of Ecology and Geography, CAS |
| Abstract: | Quantitative evaluation of soil fertility quality of the soil under the windbreak forests alongside the Tarim Desert Highway was carried out with the IFI method (soil fertility integrated index). Results show that since the establishment of the windbreak forests, the physical structure, e.g. permeability, aeration property and water-holding capacity, of the soils thereunder has been improving in various soil layers, and so has the soil biological activity, which is manifested mainly in higher soil microbial biomass C, N and, P and enhanced activity of six enzymes, thus leading to stimulation of transformation of soil nutrients and hence differentiation of most nutrient elements between soil layers. Shelter forest soils, older in age, are higher in soil salt content, and display a phenomenon of salt accumulation in the surface soil. IFI values differ slightly between soil layers of the same soil profile, but is closely related to forest tree growth indices. In a word, the soil fertility quality of the shelter forests, drip-irrigated with salty water alongside the Tarim Desert Highway is on the way of continuous improvement. |
| Keywords: | Shelter forest land soil fertility quality vertical variation evaluation |
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