Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Doctorat → Chine → 2010 → Comparative Study on Grazing Ecology in Stipa Steppe between China and Mongolia of Mongolian Platean

Inner Mongolia Agricultural University (2010)

Comparative Study on Grazing Ecology in Stipa Steppe between China and Mongolia of Mongolian Platean

包秀霞;

Titre : Comparative Study on Grazing Ecology in Stipa Steppe between China and Mongolia of Mongolian Platean

Auteur : 包秀霞;

Grade : Doctoral Dissertation 2010

Université : Inner Mongolia Agricultural University

Résumé partiel
Community characteristics showed that there was negative correlation between community characteristics and arenaceous land, arenaceous soil, pH kalium, and positive correlation between community characteristics and other chemical characteristics. Correlation between plant nutrient and soil characteristics showed that there was negative correlation between plant nutrient and pH, soluble sugar and soil kalium.Correlative analysis between Shannon-wiener index and soil characteristics showed that there was negative correlation between Shannon-wiener index and arenaceous land, pH, kalium, while it positive correlation between Shannon-wiener and other soil characteristics. Evaluation of soil characteristics showed that grassland at FSNG was not degraded(5th level), grassland at TSRG was light degradation(4th level), grassland at FSRG was sever degradation(2nd level), grassland at SG was extreme degradation(lst level).6. The study of health evaluation feld the aim and effect of production performant evaluation is unequal to ecological evaluation. The former mainly serve animal husba-ndry and pay attention to productivity differences. The latter evaluation mainly evaluate ecological function and degradation degree.Evaluation contents includs native vegetation,plant nutrient,soil seed bank,soil characteristics.We established a simple ecological evaluation and emphasized differences between grassland situatuation and native vegetation, so as to comprehensively evaluate ecological performance.7. Evaluation of production performance showed that grassland at FSNG and TSRG was moderate degradation (3rd level), grassland at FSRG was severe degradatin (2nd level), grassland at SG was extreme degradation (lst level). Our result showed that production performance between SG and FSNG, TSRG was very significant difference.8. Comprehensive evaluation of ecology showed that grassland at FSNG was light degradation (4th level), grassland at FSRG and TSRG was moderate degradation (3rd level), grassland at SG was extreme degradation (lst level). The result was basically equal to vegetation evaluation, we recommend to apply vegetation evaluation in order to simplify evaluation and facilitate production application in grassland evaluation.

Mots clés : Mongolian plateau; Stipa steppe; Grazing system; Vegetation and Soil characteristics; Health evaluation;

Présentation (CNKI)

Page publiée le 21 mai 2018