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Study on Relative Soil and Water Conservation Benefits of Ridge Tillage in Different Terrain Conditions in the Black Soil Area of Northeast China
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作者 赵玉明 姜洪涛 王世界 《Agricultural Science & Technology》 CAS 2015年第10期2354-2360,共7页
Ridge tillage, which is a very common and important tillage measure in the black soil area of northeast China, has some soil and water conservation bene- fits, but has little attention. It is very important to explore... Ridge tillage, which is a very common and important tillage measure in the black soil area of northeast China, has some soil and water conservation bene- fits, but has little attention. It is very important to explore the spatial distribution of the ridge direction of the arable land and its soil and water conservation benefits in different terrain conditions in the black soil area. So Binxian County of Heilongjiang Province was selected as the study area, and 168 field investigation units were ex- tracted by stratified sampling method and investigated. According to equations of slope gradient factor and slope gradient in ridge direction, and based on the soft- ware of Arcmap, SPSS and Excel, the investigation data of soil and water loss in Binxian County were analyzed and counted, The results show that in plain, hilly and mountainous areas, the average ground slope gradients are 1.92°, 6.20° and 8.27° respectively, and the average slope gradients along ridge direction are 1.33°, 4.52°and 6.45° respectively, which account for about 70%, 73% and 78% of the average ground slope gradients in the same terrain condition; the relative quantities of soil erosion in the present ridge tillage condition account for about 55%, 69% and 67% respectively of that in down-slope ridge tillage conditions, so the present ridge tillage has obviously relative soil and water conservation benefits. Based on these results, the reasons of the present ridge tillage status were analyzed, and some reform measures were proposed. The results could not only help to comprehend the spatial distribution and soil and water conservation benefits of ridge tillage in the black soil area of Northeast China, but also provide scientific references for the layout of local soil and water conservation measures. 展开更多
关键词 The black soil area in northeast China Ridge tillage Ridge direction soil erosion Investigation of soil and water loss soil and water conservation benefits
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Integrating water use systems and soil and water conservation measures into a hydrological model of an Iranian Wadi system 被引量:1
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作者 Nariman MAHMOODI Jens KIESEL +1 位作者 Paul D WAGNER Nicola FOHRER 《Journal of Arid Land》 SCIE CSCD 2020年第4期545-560,共16页
Water resources are precious in arid and semi-arid areas such as the Wadis of Iran. To sustainably manage these limited water resources, the residents of the Iranian Wadis have been traditionally using several water u... Water resources are precious in arid and semi-arid areas such as the Wadis of Iran. To sustainably manage these limited water resources, the residents of the Iranian Wadis have been traditionally using several water use systems(WUSs) which affect natural hydrological processes. In this study, WUSs and soil and water conservation measures(SWCMs) were integrated in a hydrological model of the Halilrood Basin in Iran. The Soil and Water Assessment Tool(SWAT) model was used to simulate the hydrological processes between 1993 and 2009 at daily time scale. To assess the importance of WUSs and SWCMs, we compared a model setup without WUSs and SWCMs(Default model) with a model setup with WUSs and SWCMs(WUS-SWCM model). When compared to the observed daily stream flow, the number of acceptable calibration runs as defined by the performance thresholds(Nash-Sutcliffe efficiency(NSE)≥0.68, –25%≤percent bias(PBIAS)≤25% and ratio of standard deviation(RSR)≤0.56) is 177 for the Default model and 1945 for the WUS-SWCM model. Also, the average Kling–Gupta efficiency(KGE) of acceptable calibration runs for the WUS-SWCM model is higher in both calibration and validation periods. When WUSs and SWCMs are implemented, surface runoff(between 30% and 99%) and water yield(between 0 and 18%) decreased in all sub-basins. Moreover, SWCMs lead to a higher contribution of groundwater flow to the channel and compensate for the extracted water by WUSs from the shallow aquifer. In summary, implementing WUSs and SWCMs in the SWAT model enhances model plausibility significantly. 展开更多
关键词 SWAT model stream flow Wadis multi-metric framework water use systems soil and water conservation measures Halilrood Basin
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Study on the Forest Vegetation and Its Water and Soil Conservation Value in Fuxian Lake Drainage Area in Yunnan Province 被引量:5
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作者 艾建林 温庆忠 陶晶 《Meteorological and Environmental Research》 CAS 2010年第10期58-61,共4页
By using French SPOT5 satellite remote sensing image to contrast on the spot,the forest vegetation in Fuxian Lake basin was categorized into 23 forest types,6 vegetation subtypes,5 vegetation types,and the areas were ... By using French SPOT5 satellite remote sensing image to contrast on the spot,the forest vegetation in Fuxian Lake basin was categorized into 23 forest types,6 vegetation subtypes,5 vegetation types,and the areas were respectively calculated.The tree species structure and the coverage degree of every kind of forest vegetation were investigated,and the characteristics of forest vegetation were analyzed.The results showed that the soil conservation amount of forest in Fuxian Lake basin was 137.50×106 t/a,and the soil conservation value was 622.30×106 yuan/a.Moreover,the water source conservation value was 506.84×106 yuan/a. 展开更多
关键词 Fuxian Lake Forest vegetation area soil conservation value water source conservation value China
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SOIL EROSION AND THE WATER & SOIL CONSERVATION IN THE LOESSIAL HILLY AREA OF SOUTHERN NINGXIA
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作者 Li Shicheng Nigsxia Survey & Design Institute for Agriculture, Yinchuan, China 《干旱区资源与环境》 CSCD 1993年第Z1期93-96,共4页
1. General Situation of Soil Erosion The loessial hilly area of southern Ningxia, Situated at the south of Ningxia Hui Au-tonomous Region, middle-upper reaches of the Yellow River, part of Chinese Loess Pla-teau, cove... 1. General Situation of Soil Erosion The loessial hilly area of southern Ningxia, Situated at the south of Ningxia Hui Au-tonomous Region, middle-upper reaches of the Yellow River, part of Chinese Loess Pla-teau, covers an area of 1500 square kilometers with an annual mean temperature of 5-8℃,a precipitation of 300-500mm of which 70% taking place concentratively during the peri-od between June and September in form of rainstorm, The annual evaporation 展开更多
关键词 Loessial HILLY area soil EROSION water and soil conservation
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Benefit measurement of the soil and water conservation for ecological forestry engineering
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作者 文贵歧 田军 蔡纪文 《Journal of Forestry Research》 CAS CSCD 2000年第2期99-102,共4页
Data were collected from Three-north Region, Middle and upper reaches region of Yangtze River and Coastal region. By analysis of factors influencing soil erosion, the longitude, latitude, annual precipitation, and the... Data were collected from Three-north Region, Middle and upper reaches region of Yangtze River and Coastal region. By analysis of factors influencing soil erosion, the longitude, latitude, annual precipitation, and the slope degree were selected as regional independent variables and canopy density and stock litter were selected as independent variables, and integral diffusing models were established for evaluation of the benefit of soil and water conservation of forest. By solving the parameters of models using the package of STATISTICA, the Power function between independent variables and dependent variables was set up. The soil conservation amount of forest and economic values were estimated using the contrast method for the ecological forestry engineering of the above three areas. 展开更多
关键词 Ecological forestry engineering soil and water conservation Benefit measurement Integral diffusing model
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Effects of ecological soil and water conservation measures on soil erosion control in China’s typical regions:A meta-analysis
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作者 LI Mingming XU Guangzhi +2 位作者 YANG Kaicheng DAI Fuqiang ZHOU Ping 《中国水土保持科学》 2024年第6期163-175,共13页
[Background]As one of the most serious environmental issues in the world,soil erosion causes water pollution,reservoir siltation,soil productivity decline,thus threatens agricultural systems and even affects global cl... [Background]As one of the most serious environmental issues in the world,soil erosion causes water pollution,reservoir siltation,soil productivity decline,thus threatens agricultural systems and even affects global climate.The benefits of ecological soil and water conservation measures(ESWCMs,such as micro basins tillage and contour tillage)are widely understood,including runoff and soil loss reducing to a certain extent when compared with traditional tillage.While few studies have focused on China’s different soil types and erosion characteristics.[Methods]We reviewed literature from Web of Science,Scopus,and China National Knowledge Infrastructure using terms like“Conservation practice”“Contour tillage”“Runoff”“Sediment”“Erosion”and“China”and retained literatures based on criteria such as natural or simulated precipitation,runoff or soil loss data,reported replications and statistics,recorded factors like location and slope,and at least two data pairs per group.Ultimately,49 literatures were selected to quantify the impacts on different ESWCMs and identify the slope and precipitation for the greatest runoff and sediment reduction by calculating the log response ratio(LRR).[Results]The three regions’soil and water conservation benefits varied due to the differences in climate,terrain,and soil properties:1)ESWCMs applied in the black soil region of Northeast China were the most effective in reducing runoff and soil loss(66.65%runoff and 75.83%sediment),followed by those applied in the purple soil region of Southwest China(39.98%runoff and 58.30%sediment)and loess soil region of Northwest China(16.36%runoff and 32.44%sediment).2)Micro basins tillage(MBT)(71.79%runoff and 87.03%sediment)no-tillage with mulch(NTM)(17.30%runoff and 32.51%sediment),collecting soil to form a ridge with no-till(CSNT)(55.78%runoff and 71.36%sediment reduction)were the most efficient soil and water conservation measures in controlling water erosion in the black soil of Northeast China,the loess soil region of Northwest China and the purple soil region of Southwest China,respectively.3)The slope gradients ranged from 0-3°,>3°-5°and>10°-15°(0-3°:97.09%;>3°-5°:74.62%;and>10°-15°:39.41%)caused the largest reduction of runoff in the black soil region of Northeast China,the loess soil region of Northwest China,and the purple soil region of Southwest China.Meanwhile,the effects of sediment reduction were the most obvious,ranging from 0-3°,>10°-15°,and>20°-25°(0-3°:89.32%;>10°-15°:75.94%;and>20°-25°:67.25%).4)The effect of ESWCMs under rainstorms was the most obvious in the black soil region of Northeast China.The effect on runoff reduction under light rain in the purple soil region of Southwest China was the most obvious,but it failed to pass the significance test in sediment reduction.[Conclusions]The results provided optimal conservation tillage measures for three regions,different slopes and different rainfalls,and provided data support for reducing regional soil and water loss in China. 展开更多
关键词 ecological soil and water conservation measures runoff sediment water erosion region
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Gully Erosion Regionalization of Black Soil Area in Northeastern China 被引量:16
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作者 YANG Jiuchun ZHANG Shuwen +3 位作者 CHANG Liping LI Fei LI Tianqi GAO Yan 《Chinese Geographical Science》 SCIE CSCD 2017年第1期78-87,共10页
Gully erosion is the frequent and main form of soil erosion in the black soil area of the northeastern China, which is one of the most important commodity grain production bases in China. It is encroaching upon the fe... Gully erosion is the frequent and main form of soil erosion in the black soil area of the northeastern China, which is one of the most important commodity grain production bases in China. It is encroaching upon the fertile farmland there. Regionalization of gully erosion can reveal the spatial distribution and regularity of the development of gully erosion. Based on the eco-geographical regional background features of the black soil area, this study combined the regionalization with influencing factors of the development of gully erosion. GIS spatial analysis, geostatistical analysis, spatial statistics, reclassification, debris polygon processing and map algebra methods were employed. As a result, the black soil area was divided into 12 subregions. The field survey data on type, length, volume and other characteristics indicators of gully erosion were used to calibrate the results. Then the features of every subregion, such as where the gully erosion is, how serious it is, and why it happens and develops, were expounded. The result is not only an essential prerequisite for gully erosion surveys and monitoring, but also an important basis for gully erosion prevention. 展开更多
关键词 regionalization gully erosion soil and water conservation black soil area northeastern China
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Effects of Erosion Control Measures on Mountain Floods: A Case Study of the Censhui River South Branch Watershed
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作者 Changzhi Li Hong Wang +2 位作者 Baozhao Yuan Dongya Sun Changjun Liu 《Journal of Agricultural Science and Technology(A)》 2015年第8期646-654,共9页
To investigate the effects of various erosion control measures on mountain floods, a case study was conducted in Censhui River South Branch Watershed using scenario analysis and soil conservation service (SCS) metho... To investigate the effects of various erosion control measures on mountain floods, a case study was conducted in Censhui River South Branch Watershed using scenario analysis and soil conservation service (SCS) methods. A distributed hydrological model was developed, and watershed parameters were determined based on satellite imagery, digital terrain models, digital maps and field investigations. Two types of erosion control measures were investigated: the variation of vegetation covers and the change of cultivation techniques. Seven scenarios were considered for the test watershed. The results show: (1) while the de-vegetation results in the increase of peak discharge, the improve of vegetation covers decreases peak discharge at watershed scale; (2) by both improving vegetation cover and enhancing terrace-cultivation technology, the peak discharge is reduced and the peak flow arrival time is delayed; (3) attention should be attached to both early warning system and measures changing the underlying surface and conveyance systems. 展开更多
关键词 waterSHED soil and water conservation mountain flood erosion control measures scenario analysis.
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Impacts of water conservancy and soil conservation measures on annual runoff in the Chaohe River Basin during 1961-2005 被引量:9
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作者 LI Zijun LI Xiubin XU Zhimei 《Journal of Geographical Sciences》 SCIE CSCD 2010年第6期947-960,共14页
Taking the Chaohe River Basin above the Miyun Reservoir in North China as a study area, the characteristics and variation trends of annual runoff and annual precipitation during 1961-2005 were analyzed applying Mann-K... Taking the Chaohe River Basin above the Miyun Reservoir in North China as a study area, the characteristics and variation trends of annual runoff and annual precipitation during 1961-2005 were analyzed applying Mann-Kendall test method on the basis of the hydrologic data of the major hydrological station (Xiahui Station) located at the outlet of the drainage basin and the meteorological data of 17 rainfall stations. Human activities including water conservancy projects construction and water diversion as well as implementation of soil and water conservation from 1961 to 2005 were carefully studied using time series contrasting method. The referenced period (1961-1980) that influenced slightly by human activities and the compared period (1981-2005) that influenced significantly by water conservancy and soil conservation measures were identified according to the runoff variation process analysis and abrupt change points detection during 1961-2005 applying double accumulative curve method, mean shift t-test method and Mann-Kendall mutation test technique. Based on the establishment of a rainfall-runoff empirical statistical model, impacts and the runoff-reducing effects of water conservancy and soil conservation measures on runoff reduction were evaluated quantitatively. The major results could be summarized as follows: (1) The annual precipitation in the drainage basin tends to decrease while the runoff has declined markedly since the 1960s, the average annual runoff from 1991 to 2000 was only 90.9% in proportion to that from 1961 to 1970. (2) The annual runoff variations in the drainage basin are significantly related to human activities. (3) During 1981-1990, 1991-2000, 2001-2005 and 1981-2005, the average annual runoff reduction amounts were 1.15×10^8, 0.28×10^8, 1.10×10^8 and 0.79×10^8 m^3 respectively and the average annual runoff-reducing effects were 31.99%, 7.13%, 40.71% and 23.79% accordingly. Runoff-reducing effects by water conservancy and soil conservation measures are more prominent in the low water period. 展开更多
关键词 IMPACTS water conservancy and soil conservation measures annual runoff rainfall-runoff empirical statistical model the Chaohe River Basin
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Changes in sediment discharge in a sediment-rich region of the Yellow River from 1955 to 2010: implications for further soil erosion control 被引量:7
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作者 JuYing JIAO ZhiJie WANG +2 位作者 GuangJu ZHAO WanZhong WANG XingMin MU 《Journal of Arid Land》 SCIE CSCD 2014年第5期540-549,共10页
The well-documented decrease in the discharge of sediment into the Yellow River has attracted considerable attention in recent years. The present study analyzed the spatial and temporal variation of sediment yield bas... The well-documented decrease in the discharge of sediment into the Yellow River has attracted considerable attention in recent years. The present study analyzed the spatial and temporal variation of sediment yield based on data from 46 hydrological stations in the sediment-rich region of the Yellow River from 1955 to 2010. The results showed that since 1970 sediment yield in the region has clearly decreased at different rates in the 45 sub-areas controlled by hydrological stations. The decrease in sediment yield was closely related to the intensity and extent of soil erosion control measures and rainstorms that occurred in different periods and sub-areas. The average sediment delivery modulus(SDM) in the study area decreased from 7,767.4 t/(km^2·a) in 1951–1969 to 980.5 t/(km^2·a) in 2000–2010. Our study suggested that 65.5% of the study area with the SDM below 1,000 t/(km^2·a) is still necessary to control soil deterioration caused by erosion, and soil erosion control measures should be further strengthened in the areas with the SDM above 1,000 t/(km^2·a). 展开更多
关键词 sediment delivery modulus(SDM) Yellow River hydrological station(s)-controlled sub-area soil and water conservation
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基于SOFM与随机森林的大别山区水土保持空间管控分区
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作者 常耀文 杜晨曦 +4 位作者 刘霞 郭家瑜 张春强 黎家作 姚孝友 《农业工程学报》 EI CAS CSCD 北大核心 2024年第20期250-258,共9页
水土保持是国家生态文明建设的重要内容,水土保持空间管控分区是水土流失区域科学治理的前提与关键。然而,目前水土保持管控区域划分研究还未形成成熟的空间划定方法,且以小流域为单元的水土保持空间管控研究较少。为探索水土保持空间... 水土保持是国家生态文明建设的重要内容,水土保持空间管控分区是水土流失区域科学治理的前提与关键。然而,目前水土保持管控区域划分研究还未形成成熟的空间划定方法,且以小流域为单元的水土保持空间管控研究较少。为探索水土保持空间管控分区的方法,落实差别化保护治理措施,该研究利用通用土壤流失方程(universal soil loss equation,USLE)计算研究区潜在土壤侵蚀模数与实际土壤侵蚀模数,并通过随机森林确定了土壤侵蚀的主要影响因子,基于小流域单元的土壤侵蚀及其影响因子利用自组织映射神经网络(self-organizing feature map,SOFM)确定了大别山区的水土保持空间管控分区。结果显示:1)大别山区的平均潜在土壤侵蚀为84 415.7 t/(km^(2)·a),平均实际土壤侵蚀为210.25 t/(km^(2)·a)。小流域的实际土壤侵蚀主要分布于0~300 t/(km^(2)·a),小流域尺度上潜在土壤侵蚀与实际土壤侵蚀空间分布格局基本一致,高值区主要分布于研究区中部与东部海拔较高的山区腹地;2)植被覆盖度、坡度分别为小流域尺度上潜在土壤侵蚀与实际土壤侵蚀的主要影响因子,植被覆盖度、坡度与土壤侵蚀呈显著正相关(P<0.01)。高植被覆盖区主要分布于林地占比较高的大别山区腹地,坡度较大的区域沿大别山山脊线自西向东分布。3)SOFM结果显示,小流域尺度上的大别山水土保持空间管控区域划分为重点预防区、一般预防区与其他区域,其中重点预防区涉及小流域710个,面积15 287.4 km^(2)。一般预防区共890个小流域,面积18 874.4 km^(2)。两个预防区面积共占研究区61.2%。各区域间的实际土壤侵蚀、潜在土壤侵蚀与坡度差异明显,可作为大别山水土保持空间管控各区域的主要划分指标。研究结果为水土保持空间管控分区提供了思路,为分区域进行水土保持空间管控提供了理论支持与决策依据。 展开更多
关键词 土壤侵蚀 大别山区 SofM 随机森林 水土保持空间管控
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Soil erosion assessment by RUSLE with improved P factor and its validation:Case study on mountainous and hilly areas of Hubei Province,China 被引量:8
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作者 Pei Tian Zhanliang Zhu +6 位作者 Qimeng Yue Yi He Zhaoyi Zhang Fanghua Hao Wenzhao Guo Lin Chen Muxing Liu 《International Soil and Water Conservation Research》 SCIE CSCD 2021年第3期433-444,共12页
The Revised Universal Soil Loss Equation(RUSLE)is widely used to estimate regional soil erosion.However,quantitative impacts of soil and water conservation(SWC)measures on conservation practice factor(P)of the RUSLE r... The Revised Universal Soil Loss Equation(RUSLE)is widely used to estimate regional soil erosion.However,quantitative impacts of soil and water conservation(SWC)measures on conservation practice factor(P)of the RUSLE remain largely unclear,especially for the mountainous and hilly areas.In this study,we improved the RUSLE by considering quantitative impacts of different SWC measures on the P factor value.The improved RUSLE was validated against the long-term(2000-2015)soil erosion monitoring data obtained from 96 runoff plots(15—35°)in mountainous and hilly areas of Hubei Province,China;the result presented a high accuracy with the determination coefficient of 0.89.Based on the erosion monitoring data of 2018 and 2019,the Root Mean Square Error of the result by the improved RUSLE was 28.0%smaller than that by the original RUSLE with decrement of 19.6%—24.0%in the average P factor values,indicating that the soil erosion modelling accuracy was significantly enhanced by the improved RUSLE.Relatively low P factor values appeared for farmlands with tillage measures(P<0.53),grasslands with engineering measures(P<0.23),woodlands with biological measures(P<0.28),and other land use types with biological measures(P<0.51).The soil erosion modulus showed a downward trend with the corresponding values of 1681.21,1673.14,1594.70,1482.40 and 1437.50 t km^(-2)a-1 in 2000,2005,2010,2015 and 2019,respectively.The applicability of the improved RUSLE was verified by the measurements in typical mountainous and hilly areas of Hubei Province,China,and arrangements of SWC measures of this area were proposed. 展开更多
关键词 conservation practice factor(P) soil and water conservation measure soil erosion Land use Monitoring data
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水土保持碳汇内涵与测算方法 被引量:4
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作者 曹文洪 张晓明 +5 位作者 张永娥 刘冰 王友胜 赵阳 殷小琳 韩晓 《中国水土保持科学》 CSCD 北大核心 2024年第1期1-11,共11页
水土保持深刻改变着地表覆被和结构、土地利用方式和陆地生态系统结构等,是增强陆地碳汇能力的重要途径。以水土保持林草、工程和耕作措施为切入点,按照“机理阐述—模型构建—分类测算”的总体思路,阐明水土保持碳汇内涵,明确了水土保... 水土保持深刻改变着地表覆被和结构、土地利用方式和陆地生态系统结构等,是增强陆地碳汇能力的重要途径。以水土保持林草、工程和耕作措施为切入点,按照“机理阐述—模型构建—分类测算”的总体思路,阐明水土保持碳汇内涵,明确了水土保持碳汇途径,构建水土保持碳汇测算方法,估算全国水土保持碳汇量。结果表明:水土保持具有垂向碳增汇、横向保土固碳(减少侵蚀土壤横向输移导致的碳流失)与减蚀减碳(避免碳排放)的多重功能。2021年,全国现存水土保持措施垂向碳增汇总量为1.54亿t,对陆域碳汇的贡献约43.5%~56.5%,其中林草措施植被和土壤碳汇量超过95%。水土保持保土固碳作用显著,2021年全国水土保持措施保土固碳总量为3 040.86万t,且具有明显的累积效应和长效作用。总体来说,2021年水土保持碳增汇(不包括水土保持林草措施植被碳汇量和土壤碳汇量)和减碳量为5 115万~6 230万t CO_(2),约占到全国现有陆地生态系统碳中和总量的4%~6%,这一部分尚未纳入国家碳汇核算体系,其应是实现“双碳”目标的重要环节。 展开更多
关键词 保土固碳 碳汇 碳中和 水土保持措施 有机碳
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以确保“一泓清水永续北上” 引领南水北调中线水源区水土保持高质量发展 被引量:2
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作者 胡甲均 《水利发展研究》 2024年第2期33-38,共6页
丹江口库区及上游是南水北调中线水源区(以下简称“水源区”),其水土保持高质量发展是保障“一泓清水永续北上”的重要支撑。文章针对水源区水土流失现状和特点,总结了丹江口库区及上游水土保持重点防治工程(以下简称“丹治”工程)实施... 丹江口库区及上游是南水北调中线水源区(以下简称“水源区”),其水土保持高质量发展是保障“一泓清水永续北上”的重要支撑。文章针对水源区水土流失现状和特点,总结了丹江口库区及上游水土保持重点防治工程(以下简称“丹治”工程)实施以来的水土保持成效,分析了水土保持面临的新形势和新要求,梳理了水土保持存在的短板和不足,研究提出了引领丹江口库区及上游水土保持高质量发展的对策举措,为各级政府加强南水北调中线水源区水土保持治理管理提供参考。 展开更多
关键词 丹江口库区及上游 水土保持 高质量发展 清水北上
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砒砂岩区生态治理-生态衍生产业协同发展关键技术与模式
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作者 姚文艺 王文彪 +2 位作者 申震洲 姚京威 杨才千 《人民黄河》 CAS 北大核心 2024年第5期1-10,共10页
探索生态治理与生态衍生产业协同发展的关键技术与途径,是促进水土保持生态治理高质量发展的重要课题。为此,以生态治理难度极大的黄河流域砒砂岩区为研究对象,基于生态经济学、生态产业技术的理论与方法,提出了生态治理-生态衍生产业... 探索生态治理与生态衍生产业协同发展的关键技术与途径,是促进水土保持生态治理高质量发展的重要课题。为此,以生态治理难度极大的黄河流域砒砂岩区为研究对象,基于生态经济学、生态产业技术的理论与方法,提出了生态治理-生态衍生产业协同发展的基本原理和应遵循的原则,探索了生态治理与生态衍生产业协同发展的关键技术与模式,并开展了示范应用。1)生态治理-生态衍生产业协同发展的原理是行为互驱动、效应互补偿,应遵循的原则是“双律适应、适地适生、三方意愿”;2)鉴于砒砂岩覆土区、覆沙区、裸露区生态环境有明显差异,分别构建了小流域生态治理-生态衍生产业协同发展的综合治理措施体系和模式,以坡顶、坡面和沟道为水土保持措施配置的3个地貌单元,选择兼具水土保持功能和饲用、药用、食用等经济开发价值的作物进行生物措施配置,配合注浆固结、抗蚀促生、砒砂岩改性等新的工程技术措施进行生态治理;3)研发了物理-化学-生物综合改良砒砂岩土壤、砒砂岩复配风沙土+生物改良提质、灌草优化平茬及饲料加工、煤矸石改性资源化利用、高陡边坡抗蚀+控渗+植生固稳、生态果园建植等关键技术;4)基于砒砂岩覆沙区“土壤改良固沙+”(如土壤改良固沙+经济林种植、土壤改良固沙+梭梭草套种甘草等)生态治理模式的实践与示范,探索实施了“政府支持,科技支撑,企业产业化+公益性投资,农牧民市场化参与”的多元投资、多方参与、共同受益运行机制与模式。通过灌草平茬饲料加工、土壤改良、经济作物种植等产业化中试,以及矿区回填区生态恢复、小流域生态治理-生态衍生产业协同发展示范性实践,表明脆弱生态区治理中发展生态衍生产业具有广阔的前景。 展开更多
关键词 水土保持 生态治理 衍生产业 生态经济 协同发展 砒砂岩区 黄河流域
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三峡库区水土流失遥感监测及治理研究
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作者 赵院 程卓 +1 位作者 常丹东 曹文华 《三峡生态环境监测》 2024年第2期105-111,共7页
三峡库区是长江流域生态环境系统的重要环节,库区生态环境问题备受关注。水土流失是影响三峡库区生态安全、制约库区发挥生态屏障功能的关键环境问题之一。2020—2022年,水利部水土保持监测中心的三峡库区水土流失遥感监测站组织实施了... 三峡库区是长江流域生态环境系统的重要环节,库区生态环境问题备受关注。水土流失是影响三峡库区生态安全、制约库区发挥生态屏障功能的关键环境问题之一。2020—2022年,水利部水土保持监测中心的三峡库区水土流失遥感监测站组织实施了基于遥感技术的三峡库区水土流失动态监测,结合野外考察和数值模拟等手段,对库区土壤侵蚀因子与侵蚀模数进行计算,并对水土流失防治效益进行评价。结果显示:(1)林地和耕地是水土流失发生的主要区域;(2)在相同的土地利用模式下,地形较陡的区域更易发生强度较大的水蚀;(3)2020—2022年,库区水土流失面积呈减少趋势,减少速率约为264 km^(2)/年,水土保持措施面积则以865 km^(2)/年的速率增加,取得较好治理效果。在进一步工作中,可针对性地在坡度较大的水蚀区进行合理的水保措施布设,以进一步提高库区水土流失治理成效。本研究可为三峡库区水土流失治理和水保措施规划以及长江流域生态系统建设提供科学依据。 展开更多
关键词 土壤侵蚀因子 土壤侵蚀模数 水土保持措施 效益评价
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南方红壤侵蚀流域不同情景措施的减沙效应模拟
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作者 梁美霞 章鑫强 林炳青 《中国农业科技导报》 CAS CSCD 北大核心 2024年第10期177-185,共9页
为揭示南方红壤侵蚀流域不同情景措施的减沙效应,实现区域可持续发展,采用SWAT(soil and water assessment tool)模型模拟方法,以南方典型花岗岩红壤侵蚀流域——福建长汀朱溪流域为研究区域,在模拟该流域产流产沙状况的基础上,通过不... 为揭示南方红壤侵蚀流域不同情景措施的减沙效应,实现区域可持续发展,采用SWAT(soil and water assessment tool)模型模拟方法,以南方典型花岗岩红壤侵蚀流域——福建长汀朱溪流域为研究区域,在模拟该流域产流产沙状况的基础上,通过不同水土保持措施和不同土地利用方式调整的情景设置,量化分析不同情景措施对该流域的减沙效应。结果表明,SWAT模型的模拟效果能达到模型要求的精度,2013—2017年朱溪流域年均径流量和年均泥沙量分别为4.793×10^(7)m^(3)和1.037×10^(7)kg。乔灌草混交和全坡面种草措施能有效提高植被覆盖度,减沙效果优越;不同土地利用方式下模拟得到朱溪流域单位面积年均减沙率为3.49%。以上研究结果可为红壤侵蚀流域泥沙阻控的生态恢复措施提供决策参考。 展开更多
关键词 SWAT模型 产沙模拟 水土保持措施 土地利用 红壤侵蚀流域
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“双碳”目标下水土保持碳汇计量、监测与评估的思考 被引量:2
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作者 李继伟 邓蕾 上官周平 《中国水土保持科学》 CSCD 北大核心 2024年第2期154-158,共5页
开展水土保持碳汇计量、监测与评估是服务我国“碳达峰、碳中和”战略的重要举措之一,可为未来的水土保持措施实施和政策制定提供理论支撑。笔者以“碳达峰、碳中和”战略背景下碳汇相关政策与研究为基础,指出我国水土保持碳汇发展方向... 开展水土保持碳汇计量、监测与评估是服务我国“碳达峰、碳中和”战略的重要举措之一,可为未来的水土保持措施实施和政策制定提供理论支撑。笔者以“碳达峰、碳中和”战略背景下碳汇相关政策与研究为基础,指出我国水土保持碳汇发展方向,阐明水土保持碳汇计量的概念、应用及评估认证体系。水土保持碳汇计量监测是“双碳”战略、水保规划、内生动力的重要实现手段,也是碳交易、生态富民和投入机制的主要应用场景。加强水土保持碳汇评估、分类管理和认证体系的建设,健全碳汇调查监测技术方法,能够推进水土保持碳汇的精确评估,为碳中和目标提供理论和技术支撑。新时期应全面推行水土保持碳汇计量监测体系建设,提升水土保持碳汇开发方法,建立水土保持碳增汇考核指标,持续挖掘水土保持碳汇增长的潜力,加强碳汇水土保持措施多元化发展,拓宽水土保持碳汇投资渠道,完善水土保持碳汇交易保障机制,推动水土保持碳汇参与碳市场交易。 展开更多
关键词 水土保持 碳汇 计量 评估 碳交易
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黑土区坡耕地水土保持耕作措施对土壤理化性状的影响 被引量:1
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作者 张忠学 尹致皓 +3 位作者 余佩哲 齐智娟 魏永霞 李骜 《农业机械学报》 EI CAS CSCD 北大核心 2024年第1期282-293,共12页
为探寻黑土区坡耕地不同水土保持耕作措施对土壤理化性状的影响机理,开展了田间小区试验。设置横坡耕作(TP)、垄向区田(RF)、深松(SF)、横坡耕作+垄向区田(TP-R)、横坡耕作+深松(TP-S)、垄向区田+深松(RF-S)3种水土保持耕作措施及3种组... 为探寻黑土区坡耕地不同水土保持耕作措施对土壤理化性状的影响机理,开展了田间小区试验。设置横坡耕作(TP)、垄向区田(RF)、深松(SF)、横坡耕作+垄向区田(TP-R)、横坡耕作+深松(TP-S)、垄向区田+深松(RF-S)3种水土保持耕作措施及3种组合耕作措施,并以常规顺坡耕作(CK)为对照,分析了土壤孔隙度、土壤机械组成、水稳性土壤团聚体稳定性、土壤养分含量等指标,并采用TOPSIS模型对不同水土保持耕作措施进行了综合评价,筛选了土壤稳定性强且蓄水保肥效果良好的水土保持耕作措施。结果表明:在玉米的全生育期内,深松、垄向区田、横坡耕作均能提高土壤体积含水率。TP-S处理体积含水率最大,0~40 cm土层平均体积含水率较CK处理增加29.47%;RF-S处理平均孔隙度最大,TP-S处理次之,平均孔隙度较CK处理分别增大10.68%、9.25%;TP-S处理能够显著提高土壤稳定性,其中平均质量直径(MWD)、几何平均直径(GMD)和大团聚体含量(R0.25)较CK处理分别增加12.30%、19.57%、13.97%;TP-S处理能够改善土壤机械组成,TP-S处理粗砂粒、粉粒、黏粒含量较CK处理增加15.40%、26.89%、1.90%,细砂粒含量较CK处理降低31.56%;TP-S处理IN(无机态氮)、AP(有效磷)、AK(速效钾)含量最高,较CK处理IN、AP、AK含量分别增加42.81%~55.32%、39.69%~40.68%、20.41%~25.45%。由TOPSIS模型综合评价结果可知,TP-S处理贴合度最高,土壤结构更稳定,且蓄水保肥效果更好,为适宜该地区的水土保持耕作措施。 展开更多
关键词 黑土区 坡耕地 耕作措施 土壤结构 蓄水保肥 TOPSIS模型
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夏县红沙河片区生态清洁小流域综合治理
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作者 马芳 《山西水土保持科技》 2024年第3期19-21,30,共4页
红沙河片区存在河源区保护力度弱、沟道水系连通状况差、水资源和土地资源利用率低、农村基础设施差等问题。通过在预防保护区进行封禁治理,综合治理区布置坡改梯工程、保土耕作、林草工程、泉水利用工程等水保工程,同步推进面源污染防... 红沙河片区存在河源区保护力度弱、沟道水系连通状况差、水资源和土地资源利用率低、农村基础设施差等问题。通过在预防保护区进行封禁治理,综合治理区布置坡改梯工程、保土耕作、林草工程、泉水利用工程等水保工程,同步推进面源污染防治、人居环境整治和文旅工程建设,生态修复区对赤峪河、吴家峪沟进行沟槽整治、边坡治理、岸边绿化等措施,将片区建设成为生态旅游型生态清洁小流域,可完善区内农业灌溉设施,提高了区内泉水利用率、土地生产力及沟道行洪能力,可有力促进当地特色产业、特色旅游业的发展,实现山青、水净、村美、民富的目标。工程建设亦可为同类工程建设提供借鉴和参考。 展开更多
关键词 生态清洁小流域 水土保持 红沙河片区
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