农业现代化研究2017，Vol.38Issue(1)：161-167,7.DOI:10.13872/j.1000-0275.2016.0148
黄土长武塬区苹果林地水量平衡研究
Study on soil water balance of apple orchards in the Loess Tableland of China
摘要
Abstract
A typical tableland in the Loess Plateau, Changwu plateau, was selected to analyze the soil water balance of apple orchards by measuring various components of water budget such as soil evaporation, plant transpiration, and soil water content. The purpose was to understand and evaluate the eco-hydrological effect of extensive planting of the economic apple forest in the Loess Tableland. The results showed that: 1) the contribution to the evapotranspiration in the apple forestland ranked in the order of canopy interception<soil evaporation < plant transpiration, and soil evaporation in the young forestland (9 a) was greater than that of the mature forestland (19 a) while plant transpiration of the mature forest was greater than that of the young forestland; 2) soil evaporation and plant transpiration had the tendency of increasing ifrst and then decreasing, and soil evaporation reached the maximum in June while plant transpiration reached the maximum in July; 3) in 2014, the closure error of water balance for the mature and young forestlands from May to August were 19.2 mm and -36.7 mm respectively, accounting for 7.9% and 15.1% of the precipitation during this period; in 2015, the closure error of water balance for the mature forestland from May to September were 15.7 mm, accounting for 4.3% of the precipitation during the period, while the value of the young forest was -0.1 mm. The results would provide theoretical support for the restructuring of farmland and orchard in the Loess Plateau and the sustainable use of limited soil water resources.关键词
土壤蒸发/植物蒸腾/土壤含水量/水量平衡/闭合程度Key words
soil evaporation/plant transpiration/soil water content/water balance/closure分类
农业科技引用本文复制引用
穆艳,王延平..黄土长武塬区苹果林地水量平衡研究[J].农业现代化研究,2017,38(1):161-167,7.基金项目
国家自然科学基金项目（41401613、41571218）；黄土高原土壤侵蚀与旱地农业国家重点实验室基金（A318009902-1516）。@@@@National Natural Science Foundation of China (41401613,41571218) （41401613,41571218）
The Open Research Funds from State Key Laboratory of Soil Erosion and Dryland Agriculture on the Loess Plateau (A318009902-1516) （A318009902-1516）
