An Introductory Comparison of Forest Ecological Conditions in Northeast China and Ontario, Canada

Burger, D.; Zhao, Shuwen

doi:10.5558/tfc64105-2

Cited by 16 publications

(11 citation statements)

References 5 publications

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“…The disjunct origins of the flora of the two continents in the Late Cretaceous or Eocene are discussed by Hsii (1983), Hou (1983), Ying (1983), Little (1983), and Axelrod (1983). Community structure and composition are discussed by Hou (1983), Wang et al (1980), and Burger and Zhao (1988). The distribution of ecosystems across the landscape is described and compared withthose of the Great Lakes area by Barnes et al (1992).…”

Section: Introductionmentioning

confidence: 96%

“…The forests of northeastern China are similar to those of the Great Lakes region of North America (Burger and Zhao 1988; Barnes et al 1992). At lower, relatively warmer elevations of the mountainous Chinese terrain, the forests are dominated by Korean pine (Pinus koraiensis Sieb.…”

Section: Introductionmentioning

confidence: 99%

“…-Betula platyphylla Suk.) boreal forest, much as the mixed pinehardwood forest of northern Wisconsin and southern Ontario is replaced by a boreal forest around the cooler shores of Lake Superior and in northern Minnesota and Ontario (Burger and Zhao 1988).…”

Section: Introductionmentioning

confidence: 99%

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Decay and nitrogen dynamics of litter from disjunct, congeneric tree species in old-growth stands in northeastern China and Wisconsin

1993

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GENG, X., PASTOR, J., and DEWEY, B. 1993. Decay and nitrogen dynamics of litter from disjunct, congeneric tree species in old-growth stands in northeastern China and Wisconsin. Can. J. Bot. 71: 693-699. Decay and nitrogen dynamics of leaf litter from four tree species in an old-growth forest in northeastern China was measured in a litter-bag experiment and compared with decomposition of congeneric species in a Wisconsin old-growth forest with similar climatic regimes and soil. Leaf litter decay in both China and Wisconsin decreased in the order Acer > Populus > Quercus > Pinus and was negatively correlated with initial lignin content (r = 0.961, P < 0.001). Decay was also correlated with other chemical properties depending on locale. In contrast with decay rates, N-immobilization kinetics were not correlated with litter chemistry or comparable between congeners. Principal component analysis showed that almost half the total variation in litter decay is explained by grouping congeneric species according to litter quality. In northern mixed hardwood-conifer forests, generic similarity implies functional similarity in decomposition and nutrient cycling. GENG, X., PASTOR, J., et DEWEY, B. 1993. Decay and nitrogen dynamics of litter from disjunct, congeneric tree species in old-growth stands in northeastern China and Wisconsin. Can. J. Bot. 7 1 : 693-699. A l'aide d'exptriences en sacs de litikres appartenant B quatre espkces d'arbre d'une for&t surannCe du nord-est de la Chine, les auteurs ont mesurt et compart leur taux de dtcornposition avec celles d'espkces congtntres venant dans une for& surannte du Wisconsin ayant des sols et des rtgimes climatiques similaires. La dtcomposition en Chine aussi bien qu'au Wisconsin,diminue selon l'ordre Acer > Populus > Quercus > Pinus et montre une~corrtlation negative avec la teneur initiale en lignine (r = 0,961, P < 0,001). La dtcomposition est tgalement corrtlte avec d'autres proprittts chimiques likes B la localitt. Contrairement aux taux de dtcomposition, les cinttiques de l'immobilisation de l'azote ne sont pas corrtltes avec la chimie de la litikre et elles ne sont pas comparables entre congtnkres. L'analyse en composante principale montre qu'environ la moitit de la variation totale de la dtcomposition des lititrers s'explique en regroupant les espkces congtnkres selon la qualitt de la litikre. Les similitudes observtes dans les for&ts mixtes bortales de bois durs et de conifkres impliquent l'existknce de similarit& fonctionnelles dans la dtcomposition des litikres et des cycles nutritionnels.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Decay and nitrogen dynamics of litter from disjunct, congeneric tree species in old-growth stands in northeastern China and Wisconsin

1993

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“…There are, however, forests in Asia that are ecologically similar to Canadian forests (Burger and Shidong 1988) and which contain promising beneficial insects. Recently, recommendations have been made to Forestry Canada to develop the necessary protocols for exploration and importation of beneficial insects from the People's Republic of China.…”

Section: The Introduction Of New Natural Enemiesmentioning

confidence: 99%

Natural enemies and forest pest management

Nealis¹

1991

The Forestry Chronicle

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RCsumC 1Forest insect pest management differs from pest management in other renewable-resource industries because of the relative complexity and stability of the forest environment. An important component of this complexity is the rich fauna of natural enemies attacking most forest insect pests. Understanding the relationship between forest insect pests and their natural enemies would permit better insight into the dynamics of pest populations.La gestion des insectes forestiers ravageurs est diffkrente de la gestion des ravageurs qu'on retrouve dans d'autres industries ? i base de ressources renouvellables par suite de la relative complexitk et stabilite de l'environnement forestier. Une composante importante de cette complexitk est constituke de la riche faune d'ennemis naturels qui attaquent la plupart des insectes forestiers ravageurs. La comprkhension des relations entre les insectes forestiers ravageurs et leurs ennemis naturels permettrait une -The active release of natural enemies in inoculative or inunmeilleure &ion de la dynamique des populations de ravageurs. dative release strategies is a direct application of biological conLa dispersion active des ennemis naturels selon des stratkgies trol to pest management. The conservation of resident natural de dispersion par inoculation ou par inondation constitue une enemies is an indirect biological control method with great potenapplication directe du contr6le biologique en gestion des tial. Knowledge of the ecology of natural enemies can be used ravageurs. La protection des ennemis naturels actifs dans le milieu to modify other forest practices such as reforestation and insecdevient une mkthode de contr6le biologique indirecte d'un grand ticide use to conserve or enhance the action of natural enemies.potentiel. La connaissance de l'kcologie des ennemis naturels peut &tre utiliser pour modifier les autres pratiques forestibres comrne le reboisement et l'utilisation &insecticide pour conserver ou amkliorer le r6le des ennemis naturels.

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“…(Burger and Zhao 1988). The characteristic forest is composed of P. koraiensis (up to 50% of stand volume) mixed with valuable tolerant hardwoods such as Tilia amurensis, Betula costata, Fraxinus mundshurica, Ulmus japonica, Acer mono, Juglans rnandshunca, and Phellodendron amurense; pioneer species are B. platyphylla and Populus davidiana (Burger and Zhao 1988).…”

Section: Introductionmentioning

confidence: 99%

Control of vole populations in young pine plantations in northeast China

Sullivan¹,

Zhen-hao²,

Li³

et al. 1991

The Forestry Chronicle

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RCsumCThis paper reports influences of rodent pests on forest regenerCet expos6 fait Ctat de l'influence des rongeurs nuisibles sur ation in northeastern China and methods, other than toxicants, la rCgCnCration forestikre du nord-est de la Chine et des to reduce feeding damage to trees by the red-backed vole mCthodes, autres que l'utilisation de rCpulsifs toxiques, de r6duc-(Clethrionomys rufocanus). Studies were conducted in 7-to tion des dommages aux arbres dtcoulant de l'alimentation du 8-year-old plantations of Scotch pine (Pinus sylvestn's) at campagnol B dos roux (Clethrionomys rufocanus). Les Ctudes NanGou Forest Farm, 15 lan southeast of Langxiang, Heilongont Ct C rdisCes dans des plantations de 7 B 8 ans de pin syljiang Province. Stem analysis indicated that radial growth was vestre (Pinus sylvestris) situks B la Ferme forest2re de NonGou, reduced 27.5% and height growth 30.5% in damaged (sub-lethal) soit ?I 15 krn au sud-est de Langxiang, Province de Heilongjiang.versus undamaged trees. Synthetic predator odour repellents L'analyse des tiges rCv5le que la croissance radiale a Ct C rduite based on weasel (Mustela eminea) anal-gland secretion signifide 27.5 %, et la croissance en hauteur de 30.5 % chez les arbres cantly reduced damage whereas red fox (VuZpes vulpes) comendommagCs (en d e~a du niveau 1Ctal) par comparaison avec ponents did not. Alternative foods composed of Korean pine (P.les arbres non-endommagCs. Des rkpulsifs synthktiques rappelkoraiensis) bark mulch,

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An Introductory Comparison of Forest Ecological Conditions in Northeast China and Ontario, Canada

Cited by 16 publications

References 5 publications

Decay and nitrogen dynamics of litter from disjunct, congeneric tree species in old-growth stands in northeastern China and Wisconsin

Decay and nitrogen dynamics of litter from disjunct, congeneric tree species in old-growth stands in northeastern China and Wisconsin

Natural enemies and forest pest management

Control of vole populations in young pine plantations in northeast China

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