|
|||||
|
|
| 不同干扰对黄土区典型草原土壤理化性质的影响 | |
| 引用本文： | 陈芙蓉,程积民,刘伟,李媛,马正锐,魏琳.不同干扰对黄土区典型草原土壤理化性质的影响[J].水土保持学报,2012,26(2):105-110. |
| 作者姓名： | 陈芙蓉 程积民 刘伟 李媛 马正锐 魏琳 |
| 作者单位： | 1. 中国科学院水利部水土保持研究所,陕西杨凌712100／中国科学院研究生院,北京100049 2. 中国科学院水利部水土保持研究所,陕西杨凌,712100 3. 西北农林科技大学,陕西杨凌,712100 |
| 基金项目： | 中国科学院战略性先导科技专项“应对气候变化的碳收支认证及相关问题”(XDA05050202);国家重点实验室基金项目(10502-Z8);林业公益性行业科研专项(200904056) |
| 摘 要： | 以黄土区云雾山典型草原为研究对象,分析4种干扰方式(封育、封育+施肥、封育+火烧和放牧)对土壤理化性质的影响。结果表明:(1)在0-50cm土层,封育、封育+施肥、封育+火烧地的土壤容重随土层深度的增加而增加,放牧地的土壤容重随土层深度的增加而减少。其中,在0-20cm土层,放牧显著高于其他3种干扰方式,封育+施肥显著低于其他3种干扰方式;(2)在0-50cm土层,4种干扰方式的土壤含水量随土层深度的增加而增加,依次为封育+火烧>封育+施肥>封育>放牧;(3)在0-50cm土层,4种干扰方式的土壤有机质、全氮和速效钾含量随土层深度的增加而减少;火烧地的全磷含量随土层深度增加而减少,其他3种干扰方式的全磷含量呈现先增加后减少的趋势。在0-30cm土层,4种干扰方式土壤养分(有机质、全氮、全磷和速效钾)含量为封育+施肥>封育+火烧>封育>放牧,且放牧会导致0-10cm所有养分含量显著降低(P<0.01)。(4)4种干扰方式,有机质与全氮、全磷和速效钾呈极显著的正相关关系(P<0.01)。 |
| 关 键 词： | 典型草原 干扰方式 土壤理化性质 |
Effects of Different Disturbances on Soil Physical and Chemical Properties in the Typical Grassland of Loess Region |
|
| CHEN Fu-rong,CHENG Ji-min,LIU Wei,LI Yuan,MA Zheng-rui,WEI Lin.Effects of Different Disturbances on Soil Physical and Chemical Properties in the Typical Grassland of Loess Region[J].Journal of Soil and Water Conservation,2012,26(2):105-110. | |
| Authors: | CHEN Fu-rong CHENG Ji-min LIU Wei LI Yuan MA Zheng-rui WEI Lin |
| Institution: | 1.Institute of Soil and Water Conservation,Chinese Academy of Sciences & Ministry of Water Resources,Yangling,Shaanxi 712100;2.Graduate University of Chinese Academy of Sciences,Beijing 100049;3.Northwest Agricultural & Forestry University,Yangling,Shaanxi 712100) |
| Abstract: | Effects of four types of disturbances(enclosure,fertilization,enclosure+burning and grazing) to the soil physical and chemical properties were analyzed.Results were as follows:(1)In the 0-50 cm soil layer,the soil bulk density increased with soil depth in enclosure(E),enclosure+fertilization(EF) and enclosure+burning(EB) grassland,while it was decreased in grazing(G) grassland.In the 0-20 cm soil layer,it was significantly higher of G than the other three types while EF was the lowest.(2)In the 0-50 cm soil layer,the soil water content increased with soil depth in the four types of disturbances and tended to be in the order of EB >EF >E >G.(3)In the 0-50 cm soil layer,soil organic carbon,total nitrogen and available potassium all decreased with soil depth,and total phosphorus decreased with soil depth of EB while it was increased at first and then decline in the other three types.In the 0-30 cm soil layer,the order of soil nutrient content tended to be EF >EB >E >G.The nutrient content of G in 0-10 cm soil layer was significantly lower than the other three types of disturbances(P<0.01).(4)Soil organic carbon content was positively related(P<0.01) to total nitrogen,total phosphorus and available potassium in all the four types of disturbances. |
| Keywords: | typical grassland disturbance types soil physical and chemical properties |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |