SUI Yuan-yuan,XU Xiao-hong,ZHANG Yu,et al.Analysis of Water Balance in Sloping Land and Forest Land in the Low Mountain and Mound Area in Mid-eastern Jilin Province—A Case Study of Xingmu Small Watershed in Dongliao County[J].Research of Soil and Water Conservation,2014,21(03):197-200,207.
吉林省中东部低山丘陵区坡耕地和林地水量平衡——以东辽县杏木小流域为例
- Title:
- Analysis of Water Balance in Sloping Land and Forest Land in the Low Mountain and Mound Area in Mid-eastern Jilin Province—A Case Study of Xingmu Small Watershed in Dongliao County
- Keywords:
- agriculture engineering; water balance; multiple-tree water balance method; surface runoff
- 分类号:
- P333.1
- 摘要:
- 为了探求黑土区坡耕地和林地降水资源再分配规律，以吉林省东辽县杏木小流域为典型研究区，采用资料统计分析与野外试验测定相结合的方法，对研究区坡耕地和林地水量平衡进行分析。结果表明：（1）研究区1978—2008年间，年内降水量呈单峰型分配，作物生长季降水量为511.16 mm，降水日数为59.95 d，分别占全年总降水量和降水天数的81.4%和56.94%。（2）农田蒸散量在5—9月分别为53.05，99.84，170.06，124.33，55.88 mm，占总输入降水量的65%～88%，为研究区坡耕地水量平衡主要支出项；土壤蓄水变化量在5月、6月、8—9月为正值，土壤处于蓄水状态；在7月份为负值，土壤处于失水状态。（3）山杨林地在生长季6—9月水分充盈，土壤水分变化量为7.94 mm，林地土壤长期处于蓄水状态。
- Abstract:
- In order to search for the redistribution law of precipitation resources in sloping land and forestand in northeast black soil area, the study was conducted in Xingmu Watershed of Dongliao County, Jilin Province, and water balance in sloping land and forest land in the research area had been studied by methods of data statistics analyses and field test. The results indicate that: (1) intra-annual precipitation between 1978 and 2008 showed a single-peak distribution type, the amount of precipitation in crop growth season was 511.16 mm which accounted for 81.4% of the annual total rainfall, the occurring days of precipitation during this period was 59.95 days which occupied 56.94% of the annual one; (2) field evapotranspiration from May to September was 53.05 mm, 99.84 mm, 170.06 mm, 124.33 mm and 55.88 mm, respectively. It accounted for 65%~88% of the total input precipitation and was the main water loss in the sloping land water balance. Variable quantity of water storage had a positive value in May, June, August and September and in this period the soil was in water storage condition, relatively, there was a negative value in July and soil was in water loss condition; (3) water quantity in aspen woodland was sufficient between June and September and variable quantity of water storage was 7.94 mm.
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备注/Memo
收稿日期:2013-09-09;改回日期:2013-10-09。
基金项目:水利部公益性行业科研专项经费项目（200901048）；国家十二五科技支撑项目（2011BAD31B01）
作者简介:隋媛媛(1986-),女,吉林东丰人,博士研究生,助理工程师,主要从事水土保持及面源污染防治。E-mail:suiyuanyuan0429@163.com
通讯作者:阎百兴(1965-),男,陕西渭南人,研究员,博士生导师,主要从事环境污染和生态修复方面的研究。E-mail:yanbx@neigae.ac.cn