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您的检索式：作者名="Daniel Ziche"
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| 1 | Gas exchange of Populus euphratica leaves in a riparian zone显示文摘Riparian vegetation belts in arid regions of Central Asia are endangered to lose their ecosystem services due to intensified land use.For the development of sustained land use,management knowledge of plant performance in relation to resource supply is needed.We estimated productivity related functional traits at the edges of the habitat of Populus euphratica Oliv.Specific leaf area(SLA) and carbon/nitrogen(C/N) ratio of P.euphratica leaves growing near a former river bank and close to moving sand dunes in the Ebinur Lake National Nature Reserve in Xinjiang,Northwest China(near Kazakhstan) were determined and daily courses of CO2 net assimilation(PN),transpiration(E),and stomatal conductance(gs) of two consecutive seasons were measured during July-August 2007 and June-July 2008.Groundwater level was high(1.5-2.5 m below ground) throughout the years and no flooding occurred at the two tree stands.SLA was slightly lower near the desert than at the former river bank and leaves contained less N in relation to C.Highest E and g s of P.euphratica were reached in the morning before noon on both stands and a second low maximum occurred in the afternoon despite of the unchanged high levels of air to leaf water vapor pressure deficit(ALVPD).Decline of g s in P.euphratica was followed by decrease of E.Water use efficiency(WUE) of leaves near the desert were higher in the morning and the evening,in contrast to leaves from the former river bank that maintained an almost stable level throughout the day.High light compensation points and high light saturation levels of PN indicated the characteristics of leaves well-adapted to intensive irradiation at both stands.In general,leaves of P.euphratica decreased their g s beyond 20 Pa/kPa ALVPD in order to limit water losses.Decrease of E did not occur in both stands until 40 Pa/kPa ALVPD was reached.Full stomatal closure of P.euphratica was achieved at 60 Pa/kPa ALVPD in both stands.E through the leaf surface amounted up to 30% of the highest E rates,indicating dependence on water recharge from the ground despite of obviously closed stomata.A distinct leaf surface temperature(Tleaf) threshold of around 30℃ also existed before stomata started to close.Generally,the differences in gas exchange between both stands were small,which led to the conclusion that micro-climatic constraints to E and photosynthesis were not the major factors for declining tree density with increasing distance from the river. | Dieter OVERDIECK Daniel ZICHE RuiDe YU | 2013 | Journal of Arid Land2013，5，4： | 5 |
| 2 | 艾比湖流域阿其克苏河床土壤盐渍化调查分析显示文摘文章以艾比湖流域阿其克苏河床土壤为例,通过选取8个样地进行不同分层土壤的土壤水溶性盐分、pH值、土壤养分等盐渍化调查及分析,以及植被与土壤表层盐化程度关系得出该地土壤盐度含量很大,甚至超过了耐盐性很强的胡杨林正常生长能够承受的极限,盐渍化程度达到重度盐渍化。 | 陆亦农 于瑞德 D. Overdieck Daniel Ziche | 2009 | 新疆师范大学学报(自然科学版)2009，28，1： | 4 |
| 3 | 新疆艾比湖地区土地沙化的影响因素分析显示文摘文章对艾比湖地区近50年来气候变化对比和对近5年的气候水文等因素实地调查,通过与新疆北疆地区50多年的温湿度及其他其自然因素比较,进行该地区土地沙化的实地检测与对比分析,认为人为因素在土地沙化过程中起着更加重要的作用。 | 陆亦农 于瑞德 高翔 Daniel Ziche | 2009 | 新疆师范大学学报(自然科学版)2009，28，3： | 1 |
| 4 | Wiener-Hopf solution for the junction between a smooth and a corrugated cylindrical waveguide显示文摘 | Daniele V G Montrosset I Zich R S | 1979 | Radio Sci1979，14，6： | 1 |
| 5 | 阿其克苏河床胡杨林长势及影响因素分析显示文摘文章采取地面实地观测分析与遥感分析相结合,在研究区域内,对选择的样地进行林分测量并对森林生长状况进行了动态监测,通过对立木状况测量分析等方法进行长势状况分析。结果表明该地区胡杨林趋于衰败,面临着毁灭的危险。气候和地下水位的变化不是导致胡杨死亡的直接原因。 | 陆亦农 于瑞德 D.Overdieck Daniel Ziche | 2010 | 新疆师范大学学报(自然科学版)2010，29，2： | 0 |
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