黄河故道沙土地夏花生灌溉研究

黄河古道沙土的裸地土壤含水量在正常降水补给下可达到田间持水量的水平，直到１０月时，０－１００ｃｍ土壤含水量仍为１５％。造靠天然降水的对照处理，其土壤含水量在雨水补给下也达到田间持水量水平，在１０月花生收获时０－１００ｃｍ土壤含水量为１４％，不同灌溉处理对花生产量影响不大。     

Urbanization Development under Climate Change: Hydrological Responses in a Peri‐Urban Mediterranean Catchment

Relatively few studies have so far investigated the hydrological impacts of urbanization in Mediterranean catchments, and particularly in peri‐urban catchments experiencing relatively rapid and large changes in their land‐use mosaic. This study uses data‐based model simulations to investigate such impacts, with the Ribeira dos Covões catchment in Portugal as a concrete Mediterranean peri‐urban catchment example. We distinguish the impacts of urbanization from those of climatic change on the water flux partitioning and connectivity in the catchment over the period 1958–2013. Decrease in precipitation over this period has primarily driven decreases in annual runoff and actual evapotranspiration, while the urbanization development has primarily changed the relative flux partitioning and connectivity pattern in the catchment. The relative contribution of overland flow to annual and seasonal runoff has increased, keeping the absolute overland flow more or less intact, while the baseflow contribution to the stream network has decreased. Methodologically, the present simulation approach provides a relevant means for distinguishing main drivers of change in hydrological flux partitioning and connectivity under concurrent urbanization and climatic changes. © 2017 The Authors. Land Degradation & Development Published by John Wiley & Sons Ltd.     

马尾松水土保持林水文功能计量研究──Ⅱ．水文功能预测及功能计量表研制

对设在湖南、湖北、四川３省共２０个县的现有马尾松水土保持林４５５块样地及３０个径流场进行了调查分析．建立了马尾松水土保持林地年径流量和侵蚀模数的预测模型；应用主成分分析方法和判别分析方法，建立了包括乔木生物色、灌木草本生物量、枯落物生物量、剖面总孔隙度和地表总孔隙度的马尾松水土保持林综合功能等级的评价模型；运用结构决定功能原理，结合林分生长、林分生物量、土壤孔隙度、植被截雨量、年径流量和侵蚀模数的预测模型、编制了马尾松水土保持林优良林分的功能计量表．     

常绿阔叶林生态系统水文效应研究

在杭州午潮山常绿阔叶林中进行了３ａ的定位研究，对常绿阔叶林生态系统的水分输入、输出过程，以及水分输入后的再分配进行定量的分析，为亚热带地区常绿阔叶林的养育提供理论依据。     

森林内雾水的水文和化学效应研究现状

从森林对雾水的截留量、雾水对森林分布的影响及雾水的水文和化学效应方面 ,阐述国外在该领域的研究动态和取得的成果 ,以期推动我国在该领域的研究工作。国外的大量研究表明 ,雾水对于植物的生长、分布具有重要的生态意义 ,是森林生态系统水分平衡、养分循环不可忽视的输入项 ,其生态效应是多方面的。因而 ,进一步深入研究森林内雾水的水文和化学效应是必要的     

半干旱区造林技术初探

在半干旱地区植苗造林成活与否 ,取决于从选择良种壮苗到抗旱栽植管理整个过程中的苗木水分状况     

马尾松水土保持林水文功能计量研究──Ⅰ．林冠截留与土壤贮水能力

对马尾松水土保持林的截水与持水功能进行了计量研究．结果表明：林冠的截水量与冠层枝叶生物量呈正相关；林分的截雨量和降雨量的关系可用Ｒｉｃｈａｒｄｓ函数较好地拟合；灌木的截水能力与其叶质叶形有关，林分枯落物不仅具有较强的特水能力，还能明显改善土壤结构；土壤的非毛管孔隙度受植被因素的显著影响．并提出了各植被因子的持水模型和土壤孔隙度预测模型．     

Structure and regeneration dynamics of dominant tree species along altitudinal gradient in a dry valley slopes of the Bhutan Himalaya

The aim of our study was to characterize the structure and regeneration dynamics of dominant tree species along altitudinal gradient in dry valley slopes of the Bhutan Himalaya. In the typical dry valley slopes of west-central Bhutan, we analyzed forest stratification, tree crown projection, and population structure from lower dry valley bottom (1520 m a.s.l.) to upper humid ridge top (3370 m a.s.l.) across five major forest types: i.e. (1) dry pine forest with Pinus roxburghii as a dominant species; (2) mixed broad-leaved forest with Quercus lanata (evergreen), Quercus griffithii, (deciduous), and Rhododendron arboreum (evergreen) as major canopy species; (3) evergreen broad-leaved forest dominated by Quercus semecarpifolia, Quercus glauca and Quercus oxyodon; (4) cool conifer forest dominated by Abies densa and Tsuga dumosa; (5) cold conifer forest with A. densa and Juniperus recurva as dominants. In general, regeneration pattern of major dominant species shifted from inverse-J (lower altitudes), to sporadic (mid-altitudes), and to uni-modal type (upper altitudes) corresponding to three regeneration trends: (1) invasive at the lower, warm, dry forest under relatively strong human disturbances; (2) stable/balanced at the mid-altitude, in a relatively stable, mature moist evergreen broad-leaved forest with gap regeneration; and (3) poor/low regeneration at the upper, cool, humid conifer forest with a continuously cattle-grazed understory. Overall, regeneration patterns were balanced in all forest types, however care should be taken to prevent excessive exploitation of dry pine forest of lower valley bottom, and to control cattle grazing at higher altitudes. Our findings can be incorporated into management plans for sustainable management and conservation of mountain forests.     

Dormancy induction in container-grown Abies seedlings: Effects of environmental cues and seedling age

Twelve-week-old container-grown seedlings of noble fir (Abies procera Rehd.) and Shasta red fir (A. magnifica A. Murr. var. shastensis Lemm.), both high-elevation species, were grown under controlled environments in a study of induction of terminal-bud dormancy. Eight treatment combinations of long (15 h) or short (11 h) photoperiods, warm (25°/20°C) or cool (18°/12°C) thermoperiods, and dry (–1.2 MPa) or wet (–0.6 MPa) moisture regimes were imposed upon seedlings for 12 weeks. Treatment factors significantly affecting the induction of dormancy in terminal buds of seedlings were identified over time. The results suggest that seedlings responded dynamically to dormancy cues. The warm/dry and cool/wet combinations induced dormancy in the first 2 weeks in noble fir and in the first week in Shasta red fir. Short-day/warm and long-day/cool combinations enhanced dormancy induction in weeks 3 to 4 in noble fir and in weeks 1 to 7 in Shasta red fir. Short days and cool thermoperiods independently hastened dormancy induction in noble fir in weeks 5 through 12.