TUO Bonan, CHEN Hulin, YANG Yang, et al. Evaluation of Soil Fertility in the Mitika Wetland National Nature Reserve, Tibet, China[J]. 2022, 36(5): 287-295.
DOI:
TUO Bonan, CHEN Hulin, YANG Yang, et al. Evaluation of Soil Fertility in the Mitika Wetland National Nature Reserve, Tibet, China[J]. 2022, 36(5): 287-295. DOI: 10.13870/j.cnki.stbcxb.2022.05.035.
Evaluation of Soil Fertility in the Mitika Wetland National Nature Reserve, Tibet, China
Taking the soil environment in Mitika Wetland National Nature Reserve as the research object
based on the completion of on-site sample collection and index analysis and determination
the statistical parameters of soil fertility indexes were studied
and then soil fertility of different soil types in the Mitika Wetland National Nature Reserve was studied. The results demonstrated that the comprehensive soil fertility coefficient (F) in the study area followed the order of alpine meadow soils (1.72)> alpine shrub meadow soils (1.66)=frigid desert soils (1.66)>bog soils (1.56)>skeletal soils (1.43). Except the alpine meadow soil belonged to fertile grade
the other four types soil belonged to the general grade. The non-parametric test results of multiple independent samples indicated that soil bulk density
organic matter content
cation exchange capacity
TOC
soil moisture and soil salinity in the study had a certain correlation with soil type
however
pH
content of available potassium
available phosphorus and ammonia nitrogen were unrelated to soil type. Overall
the soil fertility of Mitika Wetland located in northern Tibet with high cold and high altitude was comparable to that of cultivated land and artificial afforestation areas in the other regions of Tibet.
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references
Zuku M, Khosla M, Reich R. Spatial variability of measured soil properties across site-specific management zones[J].Soil Science Society of America Journal,2005(69):1572-1579.