Effects of global warming on biodiversity and food chain in paddy field soil, as revealed by FACE experiment

FACE实验揭示全球变暖对稻田土壤生物多样性和食物链的影响

• 批准号: 23580464
• 负责人: OKADA Hiroaki
• 金额: $ 3.49万
• 依托单位: National Institute for Agro-Environmental Sciences
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23580464/
• 关键词: 地球温暖化; CO2濃度; 温度; 水田生態系; 土壌; 線虫; 水稲; 微生物

We examined from May to August in 2011 and 2012, rice root, microbial and nematode densities in surface soil in paddy field, where CO2 concentration and/or temperature were elevated to evaluate how climate change 50 years later could affect paddy soil food web. Rice root density tended to increase as CO2 and temperature elevated, although the significance was not consistent. Microbial density (total DNA extracted from soil) was significantly reduced by elevated temperature. Densities of rice root nematodes and fungal feeding nematodes were consistently reduced by elevated temperature as well. In conclusion, elevated temperature negatively affected soil microbes and animals, whereas effect of elevated CO2 was small or unclear.

我们在2011年和2012年5月至8月期间研究了稻田表层土壤中的水稻根系、微生物和线虫密度，其中CO2浓度和/或温度升高，以评估50年后气候变化如何影响稻田土壤食物网。水稻根密度随CO2浓度和温度的升高而增加，但差异不显著。微生物密度（从土壤中提取的总DNA）显着降低温度升高。水稻根线虫和真菌取食线虫的密度也随着温度的升高而降低。总之，温度升高会对土壤微生物和动物产生负面影响，而CO2浓度升高的影响很小或不清楚。

项目成果

地球温暖化が水田の土壌生物に及ぼす影響

全球变暖对稻田土壤生物的影响

• 发表时间: 2013
• 作者: 岡田浩明;酒井英光;常田岳志;中村浩史;長谷川利拡
• 通讯作者: 長谷川利拡

農耕地の土壌線虫群集の環境応答

农田土壤线虫群落的环境响应

• 发表时间: 2014
• 作者: Kozo Iwasaki;Chu Ngoc Kien;Bui Thi Quynh Trang;Nguyen Minh Phuong;Truong Ngoc Kiem;and Nguyen Van Noi;池 道彦，平田收正監修;岡田浩明
• 通讯作者: 岡田浩明

CO2濃度と窒素肥料が水田の線虫群集に及ぼす影響

CO2浓度和氮肥对稻田线虫群落的影响

• 发表时间: 2013
• 作者: 岡田浩明;酒井英光;常田岳志;臼井靖浩;中村浩史;長谷川利拡
• 通讯作者: 長谷川利拡