| Assessment of climate potential for forage production in typical grassland |
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| DOI：10.7606/j.issn.1000-7601.2008.01.25 |
| Key Words: climate potential for forage production Miami model climate utilization climate change typical grassland |
| Author Name | Affiliation | | ZHAO Huiying | Hulunbeier Meteorological Bureau?Hailaer, Inner Mongolia 021008, China | | WEI Xuezhan | Inner Mongolia A utonomous Region Meterorological Bureau?Huhehaote, Inner Mongolia 010051,China | | WU Qiuli | Hulunbeier Meteorological Bureau?Hailaer, Inner Mongolia 021008, China | | ZHAO Henghe | Hainan Meteorological Bureau?Hainan, Qinghai 813000, China | | TIAN Huichun | Hainan Meteorological Bureau?Hainan, Qinghai 813000, China |
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| Abstract: |
| Calculated with Miami model and MatharnthwaiteMemorial model,the climate potential for forage production in the typical Hulun Buir Grassland is 4925.500～5551.542 kg/(hm2·a).With great general climate potential for forage production,the regional differences are not obvious.The maximum of the potential is in the areas south of Chen Qi where the precipitation is relatively high,while the potential is generally little in the northern part of New Right Banner to Manzhouli area where the precipitation is low.The utilization efficiency of climate potential is 34.2%～37.9% in the area south of Chenqi,27.6%～30.9% in the area from New Right Banner to Manzhouli,indicating that the real productivity is far bellow from the climate production potential,and there is a great potential for development.Compared with temperature,precipitation is the dominant factor of climate production potential in the region.The composition of heat and water is the key factor for the production potential.When temperature remains unchanged,the forage production potential increases by 8.7111～14.0877 kg/(hm2·a) with the precipitation increased by 1 mm.The six county-level climate assessing models established with the factors of temperature,precipitation and grassland productivity all passed 0.01 reliability test.The simulated average relative errors are <5%,so it can be used in future assessment of climate change in the Hulun Buir grassland productivity research. |
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