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Unbenanntes Dokument
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| Effects of grazing intensity on net primary production and nutrient dynamics
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| Net primary productivity, root system, nutrient dynamics |
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| In order to investigate the relationship between productivity of Leymus chinensis steppe under varying grazing intensities, the net primary productivity of five grassland management systems is estimated. Abundance of grassland species, leaf, stem, and root biomass, root length density (soil auger) and newly formed roots (ingrowth cores) are determined at several sampling dates. Two ungrazed sites (ungrazed since 1977 and 1999) are compared with two moderately grazed sites (winter grazing, hay making and summer grazing) and one heavily grazed site. Soil nutrient dynamics are investigated by resign capsules, plant nutrient uptake by analysis of the mineral nutrient content of plant organs and nutrient turnover by decomposition of shoot and root biomass
in litter bags. Low fertilizer application and moderate water application at the early growth stage are tested as simple management practices in order to increase productivity. The project is supplemented by investigations about the effect of aspect on productivity of grasslands in hilly landscapes and putative contribution of legumes on the nitrogen budget of this steppe ecosystem |
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Dr. habil. Klaus Dittert
Institute of Plant Nutrition and Soil Science
Christian-Albrechts-University Kiel
24118 Kiel
Germany
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Tel.: |
+49 431 880 3196 |
Mobil.: |
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E-mail 1: |
kdittert@plantnutrition.uni-kiel.de |
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PhD student Nicole Fanselow
Institute of Plant Nutrition and Soil Science
Christian-Albrechts-University Kiel
24118 Kiel
Germany
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Tel.: |
+49 431 880 2573 |
Mobil.: |
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E-mail 1: |
nfanselow@plantnutrition.uni-kiel.de |
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PhD student Xiao-Ying Gong
Department of Plant Nutrition
China Agricultural University
Institute of Plant Nutrition and Soil Science
Christian-Albrechts-University Kiel
24118 Kiel
Germany
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Mobil.: |
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E-mail 1: |
gongxiaoying0822@163.com |
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PhD student Qing Chen
Department of Plant Nutrition
China Agricultural University
100094 Beijing
China
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Tel.: |
+86 10 6273 3408 |
Mobil.: |
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E-mail 1: |
chenqing715@126.com |
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PhD student Jiang-Zhou Li
Department of Plant Nutrition
China Agricultural University
100094 Beijing
China
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Tel.: |
+86 10 6273 3408 |
Mobil.: |
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E-mail 1: |
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Master student Shi-Meng Chen
Department of Plant Nutrition
China Agricultural University
100094 Beijing
China
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Tel.: |
+86 10 6273 3408 |
Mobil.: |
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E-mail 1: |
azure_csm@126.com |
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Master student Hui Li
Department of Plant Nutrition
China Agricultural University
100094 Beijing
China
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Tel.: |
+86 10 6273 3408 |
Mobil.: |
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E-mail 1: |
lanshuixin@163.com |
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Prof. Shan Lin
Department of Plant Nutrition
China Agricultral University
100094 Beijing
China
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Tel.: |
+86 10 6273 3636 |
Mobil.: |
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E-mail 1: |
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Dr. Qingmin Pan
Institute of Botany
Chinese Academy of Sciences
100093 Beijing
P. R. China
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Tel.: |
+86 10 8259 5771 |
Mobil.: |
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E-mail 1: |
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Dr. Marcus Giese
Institute of Plant Nutrition and Soil Science
Christian-Albrechts-University
24118 Kiel
Germany
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Tel.: |
+49 431 880 3194 |
Mobil.: |
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E-mail 1: |
mgiese@plantnutrition.uni-kiel.de |
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Dr. Yingzhi Gao
Institute of Plant Nutrition and Soil Science
Christian-Albrechts-University
24118 Kiel
Germany
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Tel.: |
+49 431 880 3194 |
Mobil.: |
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E-mail 1: |
ygao @plantnutrition.uni-kiel.de |
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Dr. Holger Brück
Institute of Plant Nutrition and Soil Science
Christian-Albrechts-University
24118 Kiel
Germany
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Tel.: |
+49 431 880 1640 |
Mobil.: |
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E-mail 1: |
hbrueck@plantnutrition.uni-kiel.de |
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