Results 31 to 40 of about 827 (154)

湘中山地土壤线虫(Nematoda)生态地理群的研究 [PDF]

open access: yes, 1992
作者对湖南南岳衡山和长沙岳麓山土壤线虫进行了两年多的定位研究,共获得18511条土壤线虫标本.经分类鉴定,计有24个种 ...
伍惠生, 张友梅, 王振中
core  

Tree mycorrhizal associations regulate relationships between plant and microbial communities and soil organic carbon stocks at local scales in a temperate forest

open access: yesFunctional Ecology, Volume 39, Issue 6, Page 1550-1566, June 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Forests store substantial amounts of soil organic carbon (SOC), but SOC stocks differ strongly between forest ecosystems dominated by arbuscular mycorrhizal (AM) or ectomycorrhizal (EcM) fungi.
Mengxu Zhang   +10 more
wiley   +1 more source

Why are some invasive plant species so successful in nutrient‐impoverished habitats in south‐western Australia: A perspective based on their phosphorus‐acquisition strategies

open access: yesFunctional Ecology, Volume 39, Issue 2, Page 635-652, February 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Invasive plants are a major cause of the global biodiversity crisis; it is therefore crucial to understand mechanisms that contribute to their success. South‐western Australia is a global biodiversity hotspot with extremely low soil phosphorus (P) concentrations.
Dan Tang   +7 more
wiley   +1 more source

Contribution of Different Processes in Wetland Soil N_2O Production in Different Restoration Phases of the Yellow River Estuary, China [PDF]

open access: yes, 2014
采用时空替代法,选择黄河口生态恢复前后未恢复区(R_0)、2007年恢复区(R_(2007))和2002年恢复区(R_(2002))的芦苇湿地为研究对象,分析了生态恢复工程对湿地土壤N_2O产生不同过程与贡献的影响. 结果表明,尽管不同恢复阶段湿地土壤N_2O总产生量差异明显,但总体均表现为N_2O释放. 恢复区湿地土壤的N_2O产生量大于未恢复区.
孙万龙   +4 more
core  

黄泛沙地小网格农田防护林网防护效应的研究

open access: yesShuitu Baochi Xuebao, 2005
以夏津县黄泛沙地130 m×260 m的农田防护林网为研究对象,对林网内外的风速、空气温度、空气湿度、土壤温度、土壤湿度及水面蒸发进行了对比分析。分析结果表明:农田防护林具有改善小气候的功能,可以降低风速,增加空气湿度和土壤湿度,调节空气温度和土壤温度,减小水面蒸发,防风固沙,减少土壤风蚀量,林网内3 H~5 H处的防护效应最好。
宗萍萍 鲍玉海 杨吉华 孙成楠 王力
doaj   +2 more sources

Response of Soil Respiration to Snowfall in a Kubuqi Salix Plantation Forest of During Freeze-thaw Period [PDF]

open access: yes
[Objective] To investigate the changes of soil respiration in desert ecosystems and its relationship with environmental factors during the spring freeze-thaw period in arid and semi-arid regions, and to provide data support for the carbon budget of sandy
LAN Xiaozhen   +8 more
core   +1 more source

New varieties of tomatoes with high resistance to disease and high yield - breeding of a Su Kang No. 7-9 (pink colour fruit) [PDF]

open access: yes, 1995
提要苏杭七号八号、九号番茄品种是江苏省农科院蔬茉所培育的粉果类型优良一代杂 种, 经所内多年品比试验、江苏省三年区域试验、生产示范及两年全国区试、生产试验, 均表现突出。该品种高杭烟草花叶病毒(TMV)、丰产、品质好、早、中、晚熟配套, 适 应性广, 适宜露地丰产栽培及保护地种植, 已在省内及全国广泛种植, 与当地主栽品种相比, 增产15~50%
Long, M, Lu, C, Xu, H, Yang, R, Yu, W
core  

祁连山放牧草原土壤呼吸及影响因子分析

open access: yesShuitu Baochi Xuebao, 2008
在海拔2 500,2 700,2 850,3 000 m的草原上利用Li-6400-09土壤呼吸叶室测定仪测定一个生长季节祁连山排露沟流域放牧草原土壤呼吸速率,分析不同环境条件下土壤CO2释放速率对气候和土地利用的反馈作用。辅助测定地面温度(0 cm、最低温度和最高温度)、地下温度(5,10,15,20 cm)、空气温度、土壤含水量。通过2003-2006年的观测结果表明:(1)土壤呼吸速率有明显日变化规律,7:00-14:00逐渐升高,14:00达到最大值,其值为8.92μmol/(m2.s ...
车宗玺   +4 more
doaj  

钾镁供应浓度及比例对温室土壤K-Mg吸附特性的影响

open access: yesShuitu Baochi Xuebao, 2008
不同钾、镁浓度及摩尔比供应对大田及温室土壤K ,Mg2 离子吸附特性影响的研究结果表明:大田及温室土壤对K ,Mg2 离子的吸附量均随其供应浓度和比例的增加而增加,日光温室栽培下土壤对K 的吸附量显著小于大田土壤;K /Mg2 为2∶1时不同土壤对Mg2 离子吸附量的差异均较小,K /Mg2 为1∶1时,温室塿土Mg2 的吸附量低于大田土壤,而潮土温室和相应大田土壤间的差异较小;随供应的K 浓度和比例升高,土壤对Mg2 离子的吸附量显著降低。随K ,Mg2 离子浓度提高,大田土壤K ...
陈竹君   +4 more
doaj  

河套灌区农田防护林网内土壤季节性冻融过程及水盐运移

open access: yesShuitu Baochi Xuebao, 2022
为了解内蒙古河套灌区农田防护林内冻融期土壤水盐状况及运移规律, 在2020年10月至2021年4月实测土壤水分、盐分、温度及相关气象数据, 并进行相关分析。结果表明: 土体表层温度波动较大, 随土层深度加深土体温度变化逐渐平缓。冻结期气温下降速率低于消融期气温回升速率, 加之土壤温度变化的滞后性, 冻结期比消融期长10天左右。季节性冻融冻结作用导致表层土壤含水量升高、深层含水量降低, 消融解冻时期, 土壤含水量逐渐降低。两侧林带农田边缘(0.3 H、4 H)土壤表层含水量相比农田内部(1 H、2 H、3
郝可心   +4 more
doaj  

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