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| 1 | 生物结皮光合作用对光温水的响应及其对结皮空间分布格局的解译——以黄土丘陵区为例显示文摘生物结皮是具有生命活性的地表覆被物,在黄土丘陵半干旱区广泛发育。迄今有关该区不同类型生物结皮的光合、呼吸作用潜力及其影响因素还不清楚。通过野外调查采样,利用室内半开放光合测定系统,测定了黄土丘陵区典型的藻类(3年生)、藓类(土生扭口藓)生物结皮(13年生)光合及呼吸作用过程对水分、温度及光照等环境因子的响应,在此基础上,解释了不同类型生物结皮空间分布格局的内在原因。结果表明:(1)在适合的光温水条件下,生物结皮的光合及呼吸作用强度取决于生物组成,研究区藓结皮的光合及呼吸作用速率显著高于藻结皮;(2)水分是生物结皮光合、呼吸作用的关键影响因子,只有当水分含量达到一定水平,才有光合及呼吸的可能。黄土丘陵区藓类及藻类生物结皮光合作用最适水分条件分别为80%-100%和40%-80%田间持水量。(3)藓类及藻类生物结皮光合作用光补偿点PAR均低于10μmol.m-2.s-1,光饱和点PAR分别为1000和800μmol.m-2.s-1,研究中2类生物结皮均未出现光抑制现象。(4)温度显著影响生物结皮的光合及呼吸作用,研究区藓类及藻类生物结皮的最适光合温度分别为20-25℃和25-30℃。(5)生物结皮光合作用对含水量及温度的响应可以解释结皮的空间分布特征。藻类植物光合作用的最适含水量较低而最适温度较高,因此在失水较快的阳坡及开阔地面上依然可以大面积发育;而藓类植物光合作用对水分条件要求较高,因此在水分条件较好的阴坡、低洼地才易演替至藓结皮阶段。 | 赵允格 许明祥 Jayne Belnap | 2010 | 生态学报2010，30，17： | 35 |
| 2 | 数字放大器技术促进消费类音频市场发展显示文摘 | Kevin Belnap | 2003 | 今日电子2003，，4： | 3 |
| 3 | The world at your feet: desert biological soil crusts显示文摘 | Belnap J | 2003 | Frontiers in Ecology & the Environment2003，1，： | 1 |
| 4 | Surface disturbance of cryptobiotic soil crusts: Nitrogenase activity,chlorophyll content,and chlorophyll degradation显示文摘 | Belnap J Harper K T Warren S D | 1994 | Arid Soil Research and Rehabilitation1994，8，： | 1 |
| 5 | Linkages between mi crobial and hydrologic processes in arid and semiarid water- sheds显示文摘 | Belnap J Welter J R Grimm N B | 2005 | Ecology2005，86，2： | 1 |
| 6 | Successional stage of biological soil crusts: an accurate indicator of ecohydrological condition显示文摘 | Belnap J Wilcox B P Van Scoyoc M W | 2013 | Ecohydrology2013，6，3： | 1 |
| 7 | The Deliberative Stit: A Study of Action, Omission, Ability, and Obligation 显示文摘 | John F Belnap H N | 1995 | Journal of Philosophical Logic1995，24，： | 1 |
| 8 | Photosynthesis of the cyanobacterial soil crust lichen Collema tenax for arid lands in southern Utah, USA: Role of water content on light and temperature response of CO2 exchange 显示文摘 | Lange O L Belnap J Reichenberger H | 1998 | Functional Ecology1998，12，： | 1 |
| 9 | On carbon sequestra- tion in desert ecosystems显示文摘 | Schlesinger W H Belnap J Marion G | 2009 | Global Change Biology2009，15，： | 1 |
| 10 | Surface disturbance of cryptobiotic soil crusts: nitrogenase activity, chlorophyll content and chlorophyll degradation 显示文摘 | Belnap J Harper K T Warren S D | 1994 | Arid Soil Research and Rehabilitation1994，8，： | 1 |
| 11 | Vulnerability of desert biological soil crusts to wind erosion: The influences of crust development, soil texture, and disturbance 显示文摘 | Belnap J Gillete DA | 1998 | Journal of Arid Environment1998，39，： | 1 |
| 12 | Soilbiotain an ungrazed grassland:response to annual grass (Bromus tectorum) invasion显示文摘 | Belnap J Phillips S L | 2001 | Ecological Applications2001，11，： | 1 |
| 13 | Revisiting classic water erosion models in drylands: The strong impact of biological soil crusts 显示文摘 | Bowker M A Belnap J Chaudhary V B | 2008 | Soil Biology and Biochemistry2008，40，9： | 1 |
| 14 | Roads as conduits of exotic plant invasion in semiarid vegetation--Great Canoy Nature Reserve 显示文摘 | GELBARD J L BELNAP J | 2003 | Conservation Biology2003，17，： | 1 |
| 15 | The impact of pain and depression on recovery after coronary artery bypass grafting显示文摘 | Morone NE Weiner DK Belnap BH | | 0，，： | 1 |
| 16 | Soil microstructure of the Colorado plateau; the role of the cyanobacterium Microcoleus Vaginatus显示文摘 | Belnap J Gardner J S | 1993 | Great Basin Nat1993，53，1： | 1 |
| 17 | The influence of biological soil crusts on mineral uptake by associated vascular plants显示文摘 | Harper K T Belnap J | 2001 | Journal of Arid Environments2001，47，： | 1 |
| 18 | Ultrasound sensitive eLiposomes containing doxorubicin for drug targeting therapy显示文摘 | Lin C Y Javadi M Belnap D M | 2014 | Nanomedicine2014，10，1： | 1 |
| 19 | Surface disturbance of cryptobiotic soil crusts: nitrogenase activity, chlorophy Ⅱ con tent and chlorophy Ⅱ degradation显示文摘 | Belnap J Harper K T Warren S D | 1994 | Arid Soil Research & Rehabilitation1994，8，： | 1 |
| 20 | Potential nitrogen fixation activity of different aged biological soil crusts from rehabilitated grasslands of the hilly Loess Plateau, China 显示文摘 | ZHAO Yun-ge XU Ming-xiang Belnap J | 2010 | Journal of Arid Environments2010，74，： | 1 |
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