首页|Grass Litter Decomposition Rate and Water-Holding Capacity in Dry-Hot Valley of Jinshajiang River

Grass Litter Decomposition Rate and Water-Holding Capacity in Dry-Hot Valley of Jinshajiang River

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The decomposition rate and the water-holding capacity of 6 kinds of grass litters were studied in the Jinshajiang river dry-hot valley. The results showed that the dry weight remains reduced with time but did not have a direct correlation with time. The decomposition litters were affected by climate, character of litter, animalcule and soil animal. The climate factors of temperature and humidity were important especially. The water-holding capacity was in the sequence of N. wightii (336%), P. notatum Flugge (248%), H. contortus (L.) Beauv (209%), B. pertusa (L.) A. Camus(206%), I. endecaphylla Jacq (174%), D. anmlatum (Forsk.) Stapf (168%). After 24 months decomposition the remaining dry weight of the litter was in the sequence as follows: 15.12% for N. wightii, 26.38% for I. endecaphylla Jacq, 27.23% for B. pertusa (L.) A. Camus, 30.78% for P. notatum Flugge, 39.72% for H. contortus (L.) Beauv and 39.76% for D. annulatum (Forsk.) Stapf. The decomposition rate and water-holding capacity of N. wightii are at the highest level. It is important for the development, improvement and conservation of the grassland soil.

ConservationDecompositionGrassesConservationDecompositionGrassesGrasslandsHumidityLitterSoilTemperaturevalleysChinaPeople's Rep.Hubei Prov.Wuhan

Zhang M、Zhu H、Jin J、Shi L、Sha Y

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Institute of Tropical Eco-Agricultural Sciences, Yunnan Academy of Agriculture Sciences, Yuanmou 651300, Yunnan, China, [mailto:rjssyc@126.com]

2009

Wuhan University Journal of Natural Sciences

Wuhan University Journal of Natural Sciences

ISSN:1007-1202
年,卷(期):2009.14(1)