Notebook (vinyl cover) with the word “Cash” on the front

Notebook (vinyl cover) with the word “Cash” on the front. There are a number of names and addresses within the front and back covers. Some of the pages are loose. The entries include lists of goods sold from 1953-1961.

Diagrams (charts and graphs) made into a booklet with a newspaper cover

Diagrams (charts and graphs) made into a booklet with a newspaper cover. This booklet contains cross sections of the back ditch on the south side of the Welland Canal feeder, west of the Marshville culverts (45 pages, hand drawn). This was created by Fred Holmes, Oct. 3, 1857.

Análisis de la cubierta vegetal y propuesta para la zonificación ecológica del cerro El Potosí, Galeana, N. L., México [por] Mario Alberto García Aranda

Tesis (Maestría en Ciencias Forestales) U.A.N.L.

Cambios en composición, estructura y diversidad vegetal en diferentes gradientes de exposición y altitud en el Cerro el Potosí, Galeana, Nuevo León, México.

Tesis (Maestría en Ciencias Forestales) UANL, 2011.

Evaluación de la cubierta vegetal de las cuencas hidrológicas del Noreste de México y su representatividad en áreas protegidas.

Tesis (Maestría en Ciencias Forestales) UANL, 2010.

Evaluación del proceso de producción de carbón vegetal de residuos de quercus sideroxyla humb & bonpl., en hornos tipo colmena brasileño.

Tesis (Maestría en Ciencias Forestales) UANL, 2011.

Rendimiento y calidad del carbón vegetal elaborado en horno tipo fosa con subproductos forestales de piscidia piscipula (L.) sarg. y lonchocarpus castilloi standl. en Campeche.

Tesis (Maestría en Ciencias Forestales) UANL, 2013.

Análisis de sucesión vegetal y captura de carbono en áreas perturbadas del matorral espinoso tamaulipeco, México.

Tesis (Maestría en Ciencias Forestales) UANL, 2013.

Manual de microscopia electrónica, ultraestructura y citología vegetal

UANL

Manual para la producción de carbón vegetal con métodos simples [por] F. Wolf [y] E. Vogel

UANL

Stochastic simulation to improve land-cover estimates derived from coarse spatial resolution satellite imagery = La simulation stochastique pour améliorer les estimations de la couverture des sols à partir d'images satellitales à résolution spatiale grossière

Thèse diffusée initialement dans le cadre d'un projet pilote des Presses de l'Université de Montréal/Centre d'édition numérique UdeM (1997-2008) avec l'autorisation de l'auteur.

Assessment of land use and land cover changes during the last 50 years in oases and surrounding rangelands of Xinjiang, NW China

An analysis of historical Corona images, Landsat images, recent radar and Google Earth® images was conducted to determine land use and land cover changes of oases settlements and surrounding rangelands at the fringe of the Altay Mountains from 1964 to 2008. For the Landsat datasets supervised classification methods were used to test the suitability of the Maximum Likelihood Classifier with subsequent smoothing and the Sequential Maximum A Posteriori Classifier (SMAPC). The results show a trend typical for the steppe and desert regions of northern China. From 1964 to 2008 farmland strongly increased (+ 61%), while the area of grassland and forest in the floodplains decreased (- 43%). The urban areas increased threefold and 400 ha of former agricultural land were abandoned. Farmland apparently affected by soil salinity decreased in size from 1990 (1180 ha) to 2008 (630 ha). The vegetated areas of the surrounding rangelands decreased, mainly as a result of overgrazing and drought events.The SMAPC with subsequent post processing revealed the highest classification accuracy. However, the specific landscape characteristics of mountain oasis systems required labour intensive post processing. Further research is needed to test the use of ancillary information for an automated classification of the examined landscape features.

Leguminous cover crops differentially affect maize yields in three contrasting soil types of Kakamega, Western Kenya

Maize production in smallholder farming systems in Kenya is largely limited by low soil fertility. As mineral fertilizer is expensive, green manuring using leguminous cover crops could be an alternative strategy for farmers to enhance farm productivity. However due to variability in soil type and crop management, the effects of green manure are likely to differ with farms. The objectives of this study were to evaluate Mucuna pruriens and Arachis pintoi on (i) biomass and nitrogen fixation (^15N natural abundance), (ii) soil carbon and nitrogen stocks and (iii) their effects on maize yields over two cropping seasons in Kakamega, Western Kenya. Mucuna at 6 weeks accumulated 1–1.3 Mg ha^{-1} of dry matter and 33–56 kg ha^{-1} nitrogen of which 70% was nitrogen derived from the atmosphere (Ndfa). Arachis after 12 months accumulated 2–2.7 Mg ha^{-1} of dry matter and 51–74 kg N ha^{-1} of which 52-63 % was from Ndfa. Soil carbon and nitrogen stocks at 0–15 cm depth were enhanced by 2-4 Mg C ha^{-1} and 0.3–1.0 Mg N ha^{-1} under Mucuna and Arachis fallow, irrespective of soil type. Maize yield increased by 0.5-2 Mg ha^{-1} in Mucuna and 0.5–3 Mg ha^{-1} in Arachis and the response was stronger on Nitisol than on Acrisol or Ferralsol. We concluded that leguminous cover crops seem promising in enhancing soil fertility and maize yields in Kenya, provided soil conditions and rainfall are suitable.

China Marches West: Jacket cover

The China we know today is the product of vast frontier conquests of the seventeenth and eighteenth centuries by the expanding Qing empire. China Marches West tells the story of this unprecedented expansion and explores its consequences for the modern Chinese nation.

La alfombra de la Tierra : el paisaje vegetal andaluz.

El concepto de paisaje puede que sea uno de los más intuitivos y fáciles de entender. Tras esta aparente simplicidad se esconde uno de los conceptos más complejos de interpretar. El paisaje ha sido abordado por distintas disciplinas científicas: la biología, la geología, la geografía, las ciencias sociales y son muy numerosas las escuelas que plantean visiones muy distintas sobre la realidad que supone. En esta unidad didáctica se ha abordado sólo uno de los aspectos del estudio del paisaje: la vegetación. Junto a la orografía, es uno de los elementos más visibles del mismo y, como base de la vida en la Tierra tal y como la entendemos, forma parte de la mayoría de las interacciones que se producen en un espacio concreto: regulación climática, producción y retención de suelo, cobijo y alimento para los animales que allí viven y, una vez reciclada, para las propias plantas.