Results 71 to 80 of about 6,941 (192)

高通量分离培养和鉴定植物根系细菌

open access: yesBio-protocol, 2021
婧赢 张   +4 more
semanticscholar   +1 more source

Low Molecular Weight Organic Acids in Mangrove Wetlands and Their Impact on Heavy Metals Bioavailability [PDF]

open access: yes, 2007
当前我国城市化和工业化以及海洋生物养殖加剧了重金属的陆海迁移,导致其对沿海生态环境尤其是处于海陆交错带的红树林生态系统的污染。沿海河口区域的一些工业、生活污水,养殖污水,等通过排污管道向红树林湿地排放,使得红树林成为海岸的“污水处理场所”。城市化和工业化加剧了重金属的陆海迁移,导致其对沿海生态环境尤其是处于海陆交错带的红树林生态系统的污染。 低分子量有机酸在土壤中大量存在,并在时空上影响着成土的过程,如土壤养分的供应,重金属的转移和固定,矿物的风化等起着重要的作用。在土壤溶液中 ...
卢豪良
core  

Fruit function beyond dispersal: effect of fruit decomposition on the plant microbiome assembly

open access: yesNew Phytologist, Volume 249, Issue 3, Page 1442-1455, February 2026.
Summary The evolutionary role of fruits has primarily been linked to seed dispersal. However, their influence on the soil and plant microbiomes subsequent to their decomposition has received no attention. We hypothesized that fruit decomposition alters the soil microbiome, and consequently the plant microbiome and performance.
Daniel Hoefle   +8 more
wiley   +1 more source

陡坡地皇竹草水土保持效益研究

open access: yesShuitu Baochi Xuebao, 2002
以皇竹草作为生物篱植物,探讨了其在陡坡地的生长状况和水土保持效益。结果表明:皇竹草茎叶鲜生物量259.2t/hm2,年产干草51.2t/hm2,根系的84.96%集中分布于0~30cm土层内,根系密度48.6条/100cm2,可有效减小土壤容重,增加土壤孔隙度,提高土壤贮水量,固持土壤,是优良的水土保持植物。
廖晓勇 陈治谏 等
doaj   +2 more sources

砒砂岩改良风沙土对2种引进植物生长和氮磷营养的影响

open access: yesShuitu Baochi Xuebao, 2019
通过室内盆栽模拟试验,设计风沙土、砒砂岩、黄绵土、覆土砒砂岩、覆沙砒砂岩和砒砂岩改良风沙土6个土壤处理,种植鲁冰花和墨西哥玉米草2种引进植物,研究2种植物在砒砂岩改良风沙土和晋陕蒙接壤区原有土壤类型中的生长和氮磷营养差异,为该区域植被恢复提供理论依据。结果表明:(1)植物在砒砂岩改良风沙土中根系生长好,总体生物量大,鲁冰花地上生物量相较于黄绵土增幅达到242%,地下生物量相较于风沙土增幅达到186%,根长和根体积相较于风沙土增幅达到388%和290%)(2 ...
范陈斌   +4 more
doaj  

アマドコロ オオナルコユリ オヨビ ユキザサ ノ セイイク ケイカ コンケイ ハッタツ ト コンケイ ブンカツ ゾウショク [PDF]

open access: yes, 1998
【摘要】圃場栽培のアマドコロ,オオナルコユリおよびユキザサに関して,3,4年間養成した株の地上部の生育経過と根茎発達の様相,および種々の大きさの分割根茎を植え付けた場合の翌年の地上部の生育について検討した.アマドコロは春先に平均気温が約10℃に上昇した4月上中旬に萌芽し,その後急速に地上部を成長させた.開花は5月上旬から起こり,5月中下旬には開花が終了するとともに地上部の栄養成長も終了した.9月に入ると地上部の枯れ上りが急速に進んだ.開花数は比較的多かったが,結実率の年変動が大きかった ...
高樹 英明
core   +1 more source

Transcriptional outputs and condensates – formation and function

open access: yesNew Phytologist, Volume 249, Issue 3, Page 1145-1154, February 2026.
Summary The dynamic spatiotemporal organization of macromolecules is key to the proper function of the cell, allowing the exquisite regulation of diverse processes from gene expression to enzymatic function. The formation of biomolecular condensates via phase separation (PS) acts as a general mechanism for selectively concentrating proteins, nucleic ...
Stephanie Hutin   +4 more
wiley   +1 more source

The Concentration and Carbon Isotope Characteristics of Dissolved Inorganic Carbon in Jiulong River Tributaries and Estuary [PDF]

open access: yes, 2015
碳是重要的生源要素,以各种形态贯穿生命全过程;碳循环是生态系统最重要的物质循环之一。本研究应用稳定同位素技术,以九龙江干流西溪、北溪和河口区域为研究对象,对西溪、北溪及九龙江河口区进行了一个水文年的季节性采样调查,分析了表层水体中溶解无机碳含量及其碳稳定同位素组成(δ13CDIC)、悬浮颗粒物有机碳氮含量及稳定同位素组成(δ13CPOC、δ15NPON),并结合其它相关的水体理化参数对九龙江干流至河口区水体溶解无机碳和颗粒有机碳及其碳稳定同位素的时空变化规律及环境控制因素进行了初步探讨,得出以下结论 ...
梁翠翠
core  

Future heatwave conditions inhibit CO2‐induced stomatal closure in wheat

open access: yesNew Phytologist, Volume 249, Issue 3, Page 1234-1252, February 2026.
Summary As global temperatures and the severity of droughts continue to increase, food crops will more frequently experience high vapour pressure deficit (VPD) during heatwave events. However, the interactive effects of rising atmospheric CO2 and high‐VPD heatwaves on crop water fluxes and yields are currently unknown.
Robert S. Caine   +4 more
wiley   +1 more source

2种草本植物根系对崩岗洪积扇土壤抗剪强度的影响

open access: yesShuitu Baochi Xuebao, 2017
为探讨草本植物根系对崩岗洪积扇土壤抗剪强度的影响,以巨菌草(Pennisetum sp.)和宽叶雀稗(Paspalum wettsteinii)为研究对象,采用WinRHIZO根系分析系统对根系特征进行定量分析,并采用原位剪切试验测定崩岗洪积扇各土层的抗剪强度。结果表明:(1)根系能够改善土壤的结构及水分状况。(2)2种草本植物根系均主要分布在0—5 cm土层,该层巨菌草根系各参数值是该草种根系均值的3.1~4.39倍,宽叶雀稗的则为2.23~2.57倍;随着土层深度的增加,巨菌草根系参数呈对数函数减小,
  +6 more
doaj  

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