WANG Jie,JIA Wenxiong,ZHAO Zhen,et al.Study on the Relations Between the Above Ground Biomass and the Soil Physicochemical Properties in the North Slope of Qilian Mountains[J].Research of Soil and Water Conservation,2017,24(01):36-42,48.
祁连山北坡草甸草原地上生物量与土壤理化性质的关系
- Title:
- Study on the Relations Between the Above Ground Biomass and the Soil Physicochemical Properties in the North Slope of Qilian Mountains
- 分类号:
- S812;S153.6
- 摘要:
- 为了揭示祁连山北坡草甸草原的地上生物量与土壤理化性质的关系，在祁连山北坡东、中、西部选择了三个典型样地，连续收集了两个生长季的野外采样数据，开展植物地上生物量与土壤理化性质的关系研究。结果表明：（1）2014年生长季每个样地的地上总生物量均大于2013年生长季的，且两个生长季的地上总生物量从东到西均依次增加；（2）土壤含水量、土壤温度、土壤有机质、有效钾、pH值在不同样地、不同生长季、不同土层差异性明显，而土壤碱解氮、有效磷相对稳定，差异性不明显；（3）地上生物量与土壤温度呈显著正相关，与土壤水分相关性不明显，与有效磷呈极显著正相关，与pH值呈显著正相关，对地上生物量影响较大的因子是地温、有效磷以及pH值。土壤养分主要通过影响土壤的理化性质来决定植被的生长，进而影响植物的生物量。
- Abstract:
- In order to reveal the relations between the above ground biomass of meadow steppe and the soil physicochemical properties in the north slope of Qilian Mountain. We chose three typical samples in the eastern, central and western parts in the north slope of Qilian Mountains, collected the sampling data in two consecutive growing seasons, analyzed and examined the above ground biomass and soil physiochemical properties. The results show that total above ground biomass of the each sample is greater in 2014 than in 2013, and the mass increases from the east to the west. The soil moisture, soil temperature, soil organic matter, available potassium, pH value are significantly different in different growing seasons and the different layers among the sample sites. However, soil alkali-hydrolysable nitrogen and available phosphorus are relatively stable, and the differences are not signigicant. Correlation analysis shows that total above ground biomass is significantly positively correlated with soil temperature, pH value, and is significantly positively correlated with the available phosphorus, but is not significantly correlated with soil moisture. The results reveal that the major influence factors on total above ground biomass are soil temperature, available phosphorus and pH value. The soil nutrients mainly depend on the physicochemical properties of the soil, which determines the growth of vegetation and affect the biomass of plants.
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相似文献/References:
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备注/Memo
收稿日期:2016-05-16;改回日期:2016-06-06。
基金项目:国家自然科学基金地区科学基金项目（41161017）
作者简介:王洁(1990-),女,甘肃秦安人,硕士,主要从事全球气候变化与生态环境演变研究。E-mail:m13893374364_1@163.com
通讯作者:贾文雄(1974-),男,博士,副教授,主要从事全球变化与生态水文研究。E-mail:wxjiaxy@163.com