畜粪及粪金龟对内蒙古典型草原土壤电导率和pH值的影响  

Effects of animal dung and dung beetle on electrical conductivity and pH of typical grassland soils in Inner Mongolia

作　　者：田乾 张卫青[1,2,3] 乌兰图雅 于红博[1,2] 万志强 高苏日固嘎[1] 春风 TIAN Qian;ZHANG Weiqing;WULAN Tuya;YU Hongbo;WAN Zhiqiang;GAO Suriguga;CHUN Feng(College of Geography Science,Inner Mongolia Normal University,Hohhot 010022;Key Laboratory of Climate Change and Regional Response in the Mongolian Plateau,Inner Mongolia Normal University,Hohhot O10022;Provincial Key Laboratory of Disaster and Ecological Security in the Mongolian Plateau,Hohhot 010022,China)

机构地区：[1]内蒙古师范大学地理科学学院,呼和浩特010022 [2]蒙古高原气候变化与区域响应高等学校重点实验室内蒙古师范大学,呼和浩特010022 [3]内蒙古自治区蒙古高原灾害与生态安全重点实验室,呼和浩特010022

出　　处：《干旱区资源与环境》2024年第8期179-188,共10页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金(42161023,41561050,40861024,32260278)资助。

摘　　要：在草原放牧生态系统中,粪金龟促进粪便分解,对草原生态系统物质循环发挥重要作用。然而,粪金龟和畜粪对草原土壤电导率和pH值的影响仍然较少探索。文中采用野外原位试验的方法,研究粪金龟、马粪和牛粪在0-60d内对内蒙古典型草原0-5cm、5-10cm土层土壤电导率、pH值的影响。结果表明:在0-5cm土层,仅马粪添加下、土壤电导率随试验天数增加而升高(p<0.05),在第60d达到最大值303.22μS/cm;仅牛粪添加下、土壤电导率随试验天数增加先升高后降低(p<0.05),在第7d达到最大值201.2μS/cm。添加1g或2g粪金龟后,马粪下土壤电导率随试验天数增加先升高后降低(p<0.05),其中添加2g粪金龟后,在第7d时达到最大值297.5μS/cm;牛粪下土壤电导率无明显变化规律。土壤pH值受畜粪类型影响差异显著。未添加粪金龟时,马粪下土壤pH值在第7d和第60d显著高于其他时间(p<0.05);添加粪金龟时,马粪下土壤pH值随试验天数增加而波动上升,在第60d达到最大值(pH=8.35)。而牛粪下土壤pH值与对照(pH=7.34)相比无显著差异(p>0.05)。土壤电导率和pH值在5-10cm土层的变化规律与0-5cm土层相似。马粪和牛粪对土壤电导率均有显著的影响(p<0.05),马粪对土壤pH值影响随时间显著升高(p<0.05),而牛粪对土壤pH值没有显著影响变化。In grassland grazing ecosystems, dung beetles promote the decomposition of feces and play an important role in the material cycle of grassland ecosystems.However, the effects of dung beetle and animal dung on the electrical conductivity and pH of grassland soil are still less explored.This study used field in situ experiments to investigate the effects of dung beetles, horse dung, and cattle dung on soil electrical conductivity and pH values in the 0-5cm and 5-10cm soil layers of typical grasslands in Inner Mongolia within 0-60 days. The results showed that in the 0-5cm soil layer, with the addition of horse dung alone, the soil electrical conductivity increased with the increase of experimental days(p<0.05),reaching the maximum value of 303.22μS/cm on the 60th day. With the addition of cattle dung alone, the soil electrical conductivity increased firstly and then decreased with the increase of experimental days(p<0.05),reaching the maximum value of 202.1μS/cm on the 7th day. After adding 1 or 2g of dung beetles, the soil electrical conductivity under horse dung increased firstly and then decreased with the increase of experimental days(p<0.05). Among them, after adding 2g of dung beetles, the maximum value of 297.5μS/cm was reached on the 7th day.There was no significant change in soil electrical conductivity under cattle dung treatment. The soil pH value was significantly affected by the type of animal dung. When there were no dung beetles added, the soil pH value under horse dung treatment was significantly higher on the 7th and 60th day(p<0.05) than other times. When the dung beetles were added, the pH value of the soil under horse dung treatment fluctuated and increased with the increase of experimental days, reaching its maximum value on the 60th day(pH=8.35). However, there was no significant difference(p>0.05) in the pH value of the soil under cattle dung treatment compared to the control(pH=7.34). The variation pattern of soil electrical conductivity and pH value in the 5-10cm soil layer was like that

关 键 词：牛粪 马粪 粪金龟 土壤电导率 pH值 典型草原 

分 类 号：S812[农业科学—草业科学]