1. 贵州师范大学 喀斯特研究院,贵州,贵阳,550001
2. 国家喀斯特石漠化防治工程技术研究中心,贵州,贵阳,550001
3. 贵州省水土保持监测站,贵州,贵阳,550002
纸质出版:2021
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张琳卿, 覃莉, 刘忠仙, 等. 黔中喀斯特地区坡面种植措施对土壤水分及产流产沙的影响[J]. 水土保持通报, 2021,41(3):15-21.
Zhang Linqing, Qin Li, Liu Zhongxian, et al. Effects of Slope Planting Measures on Soil Moisture, Runoff, and Sediment Yield in Karst Area of Central Guizhou Province[J]. Bulletin of Soiland Water Conservation, 2021, 41(3): 15-21.
张琳卿, 覃莉, 刘忠仙, 等. 黔中喀斯特地区坡面种植措施对土壤水分及产流产沙的影响[J]. 水土保持通报, 2021,41(3):15-21. DOI: 10.13961/j.cnki.stbctb.2021.03.003.
Zhang Linqing, Qin Li, Liu Zhongxian, et al. Effects of Slope Planting Measures on Soil Moisture, Runoff, and Sediment Yield in Karst Area of Central Guizhou Province[J]. Bulletin of Soiland Water Conservation, 2021, 41(3): 15-21. DOI: 10.13961/j.cnki.stbctb.2021.03.003.
[目的
]
探讨黔中喀斯特地区坡面种植措施对土壤水分及坡面产流产沙特征的影响,为黔中地区坡面水土流失防治提供科学依据。[方法
]
基于贵州省龙里羊鸡冲水土保持监测站径流小区2014—2018年野外定位观测资料,采用相关分析及显著性检验等方法分析并探讨了黔中喀斯特地区降雨及不同种植措施对土壤水分、坡面产流及产沙特征的影响。[结果
]
①不同种植措施土壤含水率大小顺序为:杨梅 > 桃树 > 树莓 > 杨树 > 梨树 > 杨树+墨西哥柏 > 草地 > 墨西哥柏 > 玉米(等高耕作),土壤含水率与降雨量呈显著正相关。②坡面多年产流及产沙均以等高耕作(玉米)及水保林中的杨树种植措施为最大,水土保持效果最差;水土保持效果最好的为经果林种植措施,其中又以桃树种植措施效果最好。③各种植措施产流、产沙量分别与平均降雨强度及30 min最大降雨强度(I
30
)存在正相关性关系。除杨树+墨西哥柏及杨梅种植措施外,研究区其他7种种植措施坡面产流产沙与降雨量之间均存在显著正相关(p
<
0.05)。[结论
]
与坡耕地相比较,经果林、水保林及生态恢复草地措施可不同程度提高土壤含水率,同时降低产流量、产沙量,坡面土壤抗侵蚀能力得以增强,并有效降低土壤侵蚀风险。
[Objective] The effects of slope planting measures on soil moisture
runoff
and sediment yield in the karst area of Central Guizhou Province were assessed in order to provide a scientific basis for the prevention and control of soil and water loss on slopes in this area. [Methods] Based on field observation data from 2014 to 2018 in runoff plots of the Yangjichong soil and water conservation monitoring station in Longli County
Guizhou Province
the effects of rainfall and different planting measures on soil moisture
runoff
and sediment yield on slopes in the karst area of Central Guizhou were studied and analyzed by using correlation analysis and significance test. [Results] ① Soil moisture contents for different planting measures followed the order of bayberry > peach > raspberry > poplar > pear > poplar+Mexican cypress > grassland > Mexican cypress > corn (contour tillage). There was a significant positive correlation between soil moisture content and rainfall. ② The annual runoff and sediment yield on slopes were the largest with the poplar planting treatment in the contour tillage (corn) system in a soil and water conservation forest
and the soil and water conservation effects were the worst; soil and water conservation effect was the best for the fruit forest planting systems
among which peach planting was the best. ③ There was a positive correlation between runoff
sediment yield
and average rainfall intensity and maximum 30-minute rainfall intensity (I30). Except for the poplar+Mexican cypress and bayberry planting systems
there was a significant positive correlation between runoff and sediment yield and rainfall under other seven planting systems (p<0.05). [Conclusion] Compared with sloping farmland
the farming systems using fruit-bearing forests
water conservation forests
and ecological restoration of grassland can increase soil moisture content
decrease runoff and sediment yield in different degrees
enhance soil erosion resistance
and effectively reduce soil erosion risk.
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