LUO Qinghong,NING Husen,CHEN Qimin.Spatiotemporal Characteristic of Soil Physical and Chemical Properties in Haloxylon ammodendron Stand at the Southern Margin of Junggar Basin[J].Research of Soil and Water Conservation,2016,23(06):309-315.
准噶尔盆地南缘人工梭梭林土壤理化特性时空动态研究
- Title:
- Spatiotemporal Characteristic of Soil Physical and Chemical Properties in Haloxylon ammodendron Stand at the Southern Margin of Junggar Basin
- Keywords:
- Haloxylon ammodendron plantation; afforestation time; soil physical and chemical properties
- 分类号:
- S714.2
- 摘要:
- 人工梭梭林（Haloxylon ammodendron）在防风固沙和土壤改良方面具有重要的生态作用。人工梭梭林土壤理化性质在时间序列和垂直空间上的动态变化规律研究结果表明：（1）在1973—2008年的时间序列上，林地土壤含水量和有效钾呈双峰曲线形式，峰值分别出现在1986年和2003年，最低值则在2008年；随种植年限的延长，土壤pH值在0—40 cm各土层呈先增加后减小的趋势，在40—100 cm各土层则表现为双峰曲线，峰值同样在1986年和2003年；土壤电导率呈波浪形变化；土壤有机碳和有效磷含量呈先增大后减小的趋势；有效氮则呈增加的趋势。（2）0—100 cm的垂直空间上，林地土壤含水量、电导率随深度增加而增大，土壤pH值和土壤养分随深度增加而减小。综上，人工梭梭林土壤理化性质随种植年限的增加而逐渐改善，在种植年限为28年时效果最明显，以后趋于稳定。
- Abstract:
- Planted Haloxylona mmodendron (H. ammodendron) stand has an important ecological effect on sand fixation and soil improvement. The changes of soil physicochemical properties were discussed under the time series and the vertical space in H. ammodendron plantation. The results showed that:(1) in the time series of 1973-2008, the changes of soil water content (SWC) and soil available potassiumfollowed the bimodal curve, and the peak values were observed in 1986 and 2003, respectively, the soil pH value of 0-40 cm layer increased at first and then decreased, while in 40-100 cm, the change followed the bimodal curve and the peak was observed in 1986 and 2003, respectively, the electrical conductivity (EC) showed in a wave type and the contents of soil organic carbon and available phosphorus increased at first and then decreased gradually, while the available nitrogen content increased; (2) In the vertical direction, the SWC and EC increased with the increase of depth, while the pH value and soil nutrient decreased. In summary, soil physical and chemical properties improved gradually overtime of plantation, and the effect was most obvious in 29-year stands, and then tended to be stable.
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相似文献/References:
[1]丁爱强,徐先英,刘江,等.民勤绿洲自然稀疏人工梭梭林土壤水分动态[J].水土保持研究,2018,25(05):192.
DING Aiqiang,XU Xianying,LIU Jiang,et al.Soil Water Dynamics of Natural Thinning Haloxylon ammodendron in Minqin Oasis[J].Research of Soil and Water Conservation,2018,25(06):192.
备注/Memo
收稿日期:2016-01-12;改回日期:2016-02-22。
基金项目:“十二五”国家科技支撑计划项目（2012BAD16B03）；公益性科研院所基本科研业务费专项（XMBM000002014；KY201516）
作者简介:罗青红(1980-),女,新疆拜城人,硕士,副研究员,研究方向:植物逆境生理和荒漠化防治。E-mail:lqh482325@sina.com
通讯作者:宁虎森(1966-),男,新疆焉耆人,教授级高级工程师,研究方向:生态恢复和荒漠化防治。E-mail:ninghusen@sina.com