Soil moisture rate and soil nutrient dataset in the downstream of the Tarim River

In the ecosystem, soil and vegetation are two interdependent factors. Plants affect soil and soil restricts vegetation. On the one hand, there are a lot of nutrients such as carbon, nitrogen and phosphorus in the soil. On the other hand, the availability of soil nutrients plays a key role in the growth and development of plants, directly affecting the composition and physiological activity of plant communities, and determining the structure, function and productivity level of ecosystems.

Soil moisture content (or soil moisture content): In the 9 sections from Daxihaizi to taitema lake in the lower reaches of Tarim River, plant sample plots are set in the direction perpendicular to the river channel according to the arrangement of groundwater level monitoring wells. Dig one soil profile in each sample plot, collect one soil sample from 0-5 cm, 5-15 cm, 15-30 cm, 30-50 cm, 50-80 cm, 80-120 cm and 120-170cm soil layers from bottom to top in each profile layer, each soil sample is formed by multi-point sampling and mixing of corresponding soil layers, each soil layer uses aluminum boxes to collect soil samples, weighs wet weight on site, and measures soil moisture content (or soil moisture content) by drying method.

Soil nutrient: the mixed soil sample is used for determining soil nutrient after removing plant root system, gravel and other impurities, air-drying indoors and sieving. Organic matter is heated by potassium dichromate, total nitrogen is treated by semi-micro-Kjeldahl method, total phosphorus is treated by sulfuric acid-perchloric acid-molybdenum antimony anti-colorimetric method, total potassium is treated by hydrofluoric acid-perchloric acid-flame photometer method, effective nitrogen is treated by alkaline hydrolysis diffusion method, effective phosphorus is treated by sodium bicarbonate leaching-molybdenum antimony anti-colorimetric method, effective potassium is treated by ammonium acetate leaching-flame photometer method, PH and conductivity are measured by acidimeter and conductivity meter respectively (water to soil ratio is 5: 1).

Soil water-soluble total salt was determined by in-situ salinity meter.

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CHEN Yaning, HAO Xingming, WU Lizong. Soil moisture rate and soil nutrient dataset in the downstream of the Tarim River. National Tibetan Plateau Data Center, 2013. doi: 10.3972/westdc.011.2013.db. (Download the reference: RIS | Bibtex )

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Geographic coverage
Spatial coverage

East: 91.00

South: 38.50

West: 89.00

North: 42.00

  • Temporal resolution: Yearly
  • File size: 2 MB
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  • Temporal coverage: 2000-01-01 To 2005-12-31
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: CHEN Yaning   HAO Xingming   WU Lizong  

Distributor: National Tibetan Plateau Data Center


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