PAN Zhan-bing,WANG Zhan-jun,LI Sheng-bao,et al.Effects of Slope Aspect and Position on Temporal and Spatial Variation of Soil Water Content on Alfalfa Land in Loess Hilly Region of South Ningxia Hui Autonomous Region[J].Research of Soil and Water Conservation,2010,17(02):141-144.
宁南黄土丘陵区坡向、坡位对苜蓿地土壤含水量时空变异的影响
- Title:
- Effects of Slope Aspect and Position on Temporal and Spatial Variation of Soil Water Content on Alfalfa Land in Loess Hilly Region of South Ningxia Hui Autonomous Region
- Keywords:
- soil water content; alfalfa land; slope direction; slope position
- 分类号:
- S152.7
- 摘要:
- 为了探讨坡向、坡位对苜蓿地土壤含水量的影响程度，在宁南黄土丘陵区，采用时域反射仪TDR对不同坡向、坡位种植的7 a生苜蓿地土壤体积含水量进行了分层动态监测，分析结果表明：（1）种植苜蓿7 a后，土壤旱化显现，土壤水分明显分为补水期与耗水期，3-7月属于耗水期，8-10月为补水期；（2）各坡向苜蓿地旱化最为严重的土层深度也不同，西坡（阴坡）为40-60 cm，南坡苜蓿地旱化最为严重的土层为80-100 cm，东坡（阳坡）为100-120 cm；西坡（阴坡）0-180 cm土壤平均含水量最高（13.8%），其次为南坡苜蓿地，东坡（阳坡）最低（12.8%）。（3）受降水再分配影响，上、中、下坡0-180 cm平均土壤含水量变化趋势为：下坡（13.69%）>中坡（13.61%）>上坡（12.29%）；土壤含水量最为活跃的0-100 cm范围内，相同层土壤含水量相比，CK>下坡>上坡>中坡。这说明种植苜蓿多年后土壤出现旱化现象，且坡位越高，土壤旱化越严重。
- Abstract:
- In order to research the effects of slope direction and position on soil water content on alfalfa land in loess hilly region of South Ningxia, the soil volumetric water content on 7-year-old alfalfa lands with different slope directions and positions was dynamically monitored by time domain reflectometer (TDR). The results showed that the soil drying degree was obvious and the status of soil water can be divided into 2 periods: water consumptive period concentration from March to July and water supplemental period concentration from August to October. The driest soil layer depth on alfalfa land with different slope directions showed differences. On west facing slope (shady slope), the depth was 40-60 cm, on south facing slope was 80-100 cm, and 100-120 cm on east facing slope (sunny slope). On west facing slope (shady slope), the average soil water content of 0-180 cm layer was the highest (13.8%), then the south slope, the east facing slope (sunny slope) had the lowest water content (12.8%). Influenced by rainfall redistribution, the order of average soil water content of 0-180 cm layer at different slope positions was downhill(13.69%) > mid-slope(13.61%) > uphill(12.29%). In 0-100 cm soil layer where the water content changed most actively, the order of soil water content in the same layer at different slope positions was CK > downhill > uphill > mid-slope. This suggested that soil became dry after alfalfa planting, and the drying situation was more serious at higher slope positions.
参考文献/References:
[1] 王占军, 蒋齐, 刘华, 等.宁夏干旱风沙区林药间作生态恢复措施与土壤环境效应响应的研究[J].水土保持学报, 2007, 21(4):90-93.
[2] 胡良军, 邵明安.黄土高原植被恢复的水分生态环境研究[J].应用生态学报, 2002, 13(8):1045-1048.
[3] 王力, 邵明安, 侯庆春.黄土高原土壤干层初步研究[J].西北农林科技大学学报:自然科学报, 2001, 29(4):34-38.
[4] 孙剑, 李军, 王美艳, 等.黄土高原半干旱偏旱区苜蓿-粮食轮作土壤水分恢复效应[J].农业工程学报, 2009, 25(6):33-39.
[5] 杨永东, 张建生, 蔡国军, 等.黄土丘陵区不同立地条件下紫花苜蓿地土壤水分动态变化[J].草业科学, 2008, 25(10):25-28.
[6] 万素梅, 胡守林, 贾志宽, 等.黄土高原地区苜蓿生产力动态及其土壤水分消耗规律[J].农业工程学报, 2007, 23(12):30-34.
[7] 王思成, 王月玲, 许浩, 等.半干旱黄土丘陵区不同植被恢复方式下土壤理化特性及相关分析[J].西北农业学报, 2009, 18(1):295-299.
[8] 巩杰, 陈利项, 傅伯杰, 等.黄土高原丘陵小流域土地利用和植被恢复对土壤质量的影响[J].应用生态学报, 2004, 15(12):2292-2296.
[9] 徐文铎, 邹春静.中国沙地森林生态系统[M].北京:中国林业出版社, 1998.
[10] 王兵, 崔向慧.民勤绿洲-荒漠过渡区水量平衡规律研究[J].生态学报, 2004, 24(2):235-240.
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备注/Memo
收稿日期:2009-9-25。
基金项目:“十一五”国家科技支撑计划课题（2006BAC01A07）；宁夏自然科学基金（NZ0854）；宁夏退耕还林工程效益监测与定量评价研究
作者简介:潘占兵（1975- ），男，宁夏惠农人，助理研究员，主要从事荒漠化防治与生态环境建设方面等研究。E-mail：pan7536@163.com