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Winter Wheat Yield Estimation Based on Sparrow Search Algorithm Combined with Random Forest:A Case Study in Henan Province,China
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作者 SHI Xiaoliang CHEN Jiajun +2 位作者 DING Hao YANG Yuanqi ZHANG Yan 《Chinese Geographical Science》 SCIE CSCD 2024年第2期342-356,共15页
Precise and timely prediction of crop yields is crucial for food security and the development of agricultural policies.However,crop yield is influenced by multiple factors within complex growth environments.Previous r... Precise and timely prediction of crop yields is crucial for food security and the development of agricultural policies.However,crop yield is influenced by multiple factors within complex growth environments.Previous research has paid relatively little attention to the interference of environmental factors and drought on the growth of winter wheat.Therefore,there is an urgent need for more effective methods to explore the inherent relationship between these factors and crop yield,making precise yield prediction increasingly important.This study was based on four type of indicators including meteorological,crop growth status,environmental,and drought index,from October 2003 to June 2019 in Henan Province as the basic data for predicting winter wheat yield.Using the sparrow search al-gorithm combined with random forest(SSA-RF)under different input indicators,accuracy of winter wheat yield estimation was calcu-lated.The estimation accuracy of SSA-RF was compared with partial least squares regression(PLSR),extreme gradient boosting(XG-Boost),and random forest(RF)models.Finally,the determined optimal yield estimation method was used to predict winter wheat yield in three typical years.Following are the findings:1)the SSA-RF demonstrates superior performance in estimating winter wheat yield compared to other algorithms.The best yield estimation method is achieved by four types indicators’composition with SSA-RF)(R^(2)=0.805,RRMSE=9.9%.2)Crops growth status and environmental indicators play significant roles in wheat yield estimation,accounting for 46%and 22%of the yield importance among all indicators,respectively.3)Selecting indicators from October to April of the follow-ing year yielded the highest accuracy in winter wheat yield estimation,with an R^(2)of 0.826 and an RMSE of 9.0%.Yield estimates can be completed two months before the winter wheat harvest in June.4)The predicted performance will be slightly affected by severe drought.Compared with severe drought year(2011)(R^(2)=0.680)and normal year(2017)(R^(2)=0.790),the SSA-RF model has higher prediction accuracy for wet year(2018)(R^(2)=0.820).This study could provide an innovative approach for remote sensing estimation of winter wheat yield.yield. 展开更多
关键词 winter wheat yield estimation sparrow search algorithm combined with random forest(SSA-RF) machine learning multi-source indicator optimal lead time henan Province China
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A Study on Technology Application and Performance of Small and Medium-sized Enterprises in the Context of Cloud Computing Application-A Case Study of Hotel Industry in Henan,China
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作者 Zhang Hui Alireza Mohammadi 《Journal of Sustainable Business and Economics》 2024年第2期69-75,共7页
This paper examines how the adoption of cloud computing affects the relationship between the technical and environmental capabilities of small and medium-sized enterprises(SMEs)in the tourism industry in Henan Provinc... This paper examines how the adoption of cloud computing affects the relationship between the technical and environmental capabilities of small and medium-sized enterprises(SMEs)in the tourism industry in Henan Province,China,thereby promoting the stable and sustainable development of the tourism industry,combining the laws of tourism market development,vigorously constructing a smart tourism project,guiding tourism cloud service providers to strengthen the cooperation and contact with the market’s tourism enterprises,introducing and utilizing cloud computing technology,optimizing and improving the functions of various tourism services of the enterprises,and enhancing the processing and analysis of enterprise-related data to provide tourism information.Strengthen the processing and analysis of enterprise-related data to provide tourism information,and further study the adoption of cloud computing and its impact on small and medium-sized enterprises(SMEs)in terms of technology and business environment knowledge,so as to make the best enterprise management decisions and realize the overall enhancement of the enterprise’s tourism brand value. 展开更多
关键词 SMES Cloud Computing Technology Adoption Performance henan Hotels
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Research on the Path to High-Quality Development of Grassroots Libraries in the Era of Artificial Intelligence in Henan
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作者 Yan Jiang 《Journal of Electronic Research and Application》 2024年第5期118-124,共7页
Since the age of digital intelligence,the government has introduced policies to actively promote the intelligent transformation of grassroots public cultural services.Based on the investigation and analysis of the dev... Since the age of digital intelligence,the government has introduced policies to actively promote the intelligent transformation of grassroots public cultural services.Based on the investigation and analysis of the development status quo of grassroots libraries in Henan Province,we put forward the path of high-quality development of grassroots libraries in Henan,namely,improving the mechanism and system,leading with digital intelligence technology,empowering by Yellow River culture(the heritage and values rooted in the history and traditions of the Yellow River region),and driven by users’demand. 展开更多
关键词 Artificial intelligence henan grassroots libraries High-quality development Public cultural services Digital culture
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Analysis of the Impact of Off-farm Employment of Agricultural Labor on Grain Production in Shandong Province and Henan Province 被引量:3
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作者 朱琳 刘彦随 《Agricultural Science & Technology》 CAS 2012年第7期1609-1615,共7页
[Objective] This study aimed to investigate the impact of off-farm employment of agricultural labor on grain production. [Method] Impact of off-farm employment of agricultural labor on grain production was investigate... [Objective] This study aimed to investigate the impact of off-farm employment of agricultural labor on grain production. [Method] Impact of off-farm employment of agricultural labor on grain production was investigated based on path analysis by using data from 200 counties and cities in Shandong Province and Henan Province in 2000 and 2008. [Result] Off-farm employment of agricultural labor affects grain production through agricultural land use patterns, off-farm employment of agricultural labor has negative impacts on grain production through multiple cropping index and positive impacts through the proportion of grain planting area. The positive impacts were greater in 2008. [Conclusion] Prerequisite of the positive impacts of off-farm employment on grain production is the substitution of agricultural mechanization development and agricultural technology advancement for agricultural labor. Orderly land circulation and scale land use should be promoted to avoid the lack of agricultural labor due to off-farm employment. 展开更多
关键词 Off-farm employment of agricultural labor Grain Production Path Analysis Shandong Province henan Province
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Variations of Frost-free Period and Its Impact on Grain Yields in Henan Province during 1961-2013 被引量:4
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作者 闫军辉 傅辉 +1 位作者 周红升 徐新创 《Agricultural Science & Technology》 CAS 2015年第8期1588-1591,1692,共5页
The aim of this study was to investigate the responses of frost dates to global warming and its influences on grain yields. In this study, based on the frost date series defined by daily minimum ground temperature, th... The aim of this study was to investigate the responses of frost dates to global warming and its influences on grain yields. In this study, based on the frost date series defined by daily minimum ground temperature, the spatial and temporal characteristics of first frost date (FFD), last frost date (LFD) and frost-free period (FFP) were analyzed. The impact of extending FFP on major crop yields was also studied. The results were as follows: FFD showed a significantly delaying trend of 2.2 d/10 y, and LFD presented an advancing trend of 2.4 d/10 y. FFP extended at a rate of 4.5 d/10 y due to the later FFD and earlier LFD. The most obvious trend of FFD was in westem Henan, while the most significant trend of LFD and FFP oc- curred in south central parts of the study area. However, in eestem region, the trends of FFD, LFD and FFP were not so obvious. Major crop yield showed a sig- nificant correlation with frost-free period for Henan during 1961-2013. The yields of grain, rice, wheat, and maize increased by 79.5, 90.0, 79.5 and 70.5 kg/hm2 with FFP extending by one day. 展开更多
关键词 Daily minimum ground temperature Frost-free period Grain yield henan province 1961-2013
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猪繁殖与呼吸综合征河南毒株Henan-1的分离及其NSP2、ORF3、ORF5的序列分析 被引量:13
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作者 张彩勤 王旭荣 +2 位作者 杨增岐 赵炳武 宋长绪 《西北农业学报》 CSCD 北大核心 2008年第1期1-6,共6页
将2007年1月河南省某猪场送检的疑似高热病病料处理后接种于Marc-145细胞,出现细胞聚集、固缩、脱落等特异性细胞病变。根据GenBank中猪繁殖与呼吸综合征病毒(PRRSV)的基因序列设计并合成针对NSP2、ORF3和ORF5基因的引物,RT-PCR扩... 将2007年1月河南省某猪场送检的疑似高热病病料处理后接种于Marc-145细胞,出现细胞聚集、固缩、脱落等特异性细胞病变。根据GenBank中猪繁殖与呼吸综合征病毒(PRRSV)的基因序列设计并合成针对NSP2、ORF3和ORF5基因的引物,RT-PCR扩增目的基因并将其克隆入pMD18-T载体进行测序。并与国内外已发表的毒株的序列进行比较。结果表明:分离毒株Henan-1是美洲型PRRSV,而且NSP2基因发生30个AA的不连续缺失;Henan-1的NSP2、ORF3和ORF5基因与JXA1、JX0612、HZ-X、HB-1(sh)、CH-1a、HB-2(sh)、SP、ATCC VR-2332、Henan-HN1、Resp PRRS/Repro MLV、PA8、BJ-4等毒株等位基因的核苷酸同源性分别为83.0%~99.0%、88.3%~99.2%、88.6%~99.5%,推导的氨基酸同源性分别为66.7%~97.9%、84.7%~98.8%、87.1%~99.5%;而ORF3和ORF5基因与LV4.2.1等位基因核苷酸同源性分别为64.7%和64.2%,推导的氨基酸同源性分别为56.7%和61.0%。基因系统发育树分析表明:Henan-1与JXA1、JX0612株的亲缘关系很近,与HB-1(sh)亲缘关系较近,与HZ-X、CH-1a、HB-2(sh)、SP、RespPRRS/Repro MLV等毒株处于不同的分支。 展开更多
关键词 猪繁殖与呼吸综合征病毒 henan-1毒株 序列分析
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Technological Paths for Improving Grain Comprehensive Productivity ——Taking Henan Province for Instance 被引量:1
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作者 解宗方 张伟 《Agricultural Science & Technology》 CAS 2011年第10期1539-1542,1551,共5页
[Objective] This paper aimed at exploring technological paths for improving grain productivity based on the conditions and production practice in Henan Province.[Method] The status and dynamics of grain production in ... [Objective] This paper aimed at exploring technological paths for improving grain productivity based on the conditions and production practice in Henan Province.[Method] The status and dynamics of grain production in Henan Province were analyzed as a whole.[Result] The total production of grain in Henan Province had generally shown a tendency of ascent.Total grain production in Henan Province was 54 370 thousand t,which was 2.5 times of the total grain production in 1978,as 20 974 thousand t.The growth of grain production was more and more relying on the improvement of grain yield per unit area.[Conclusion] This research had provided theoretical basis for the improvement of grain production in Henan Province as well as for the grain production of the whole country. 展开更多
关键词 GRAIN TECHNOLOGY YIELD henan Province
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老年人群骨关节疾病流行特征及其影响因素研究
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作者 高焱 杨淑显 +5 位作者 范雷 常亮 高莉 张寒雪 李卉 康锴 《中国全科医学》 CAS 北大核心 2025年第3期280-284,298,共6页
背景骨关节疾病是老年人群常见、多发的慢性疾病,其与更高的死亡率、更多的致残率、功能状态的下降和较低的生命质量显著相关,产生巨大的疾病负担。目前尚无河南省该病流行情况及其影响因素的研究。目的了解河南省老年人群骨关节疾病流... 背景骨关节疾病是老年人群常见、多发的慢性疾病,其与更高的死亡率、更多的致残率、功能状态的下降和较低的生命质量显著相关,产生巨大的疾病负担。目前尚无河南省该病流行情况及其影响因素的研究。目的了解河南省老年人群骨关节疾病流行特征及其影响因素,为其实施精准防控提供科学依据。方法采用多阶段随机整群抽样方法,通过调查问卷、医学体检、实验室检测等方法,获取2018年河南省≥18岁常住居民人口学特征、既往疾病史、身体活动及身体指标等,本研究纳入1055名≥60岁居民为研究对象。运用多因素Logistic回归分析探讨河南省不同特征老年人群骨关节疾病特征及其影响因素。结果2018年河南省老年人群骨关节疾病患病率(加权后)为28.13%(95%CI=28.10%~28.15%)。其中女性、城市、超重或肥胖、中心性肥胖、血脂异常或高脂血症、无吸烟史、有打鼾史、中等强度活动的老年人群骨关节疾病患病率更高(P<0.05)。多因素Logistic回归分析显示,男性(OR=0.717,95%CI=0.550~0.933,P=0.013)是老年人群骨关节疾病的保护因素;超重或肥胖(OR=1.329,95%CI=1.050~1.684,P=0.018)、中心性肥胖(OR=1.305,95%CI=1.047~1.626,P=0.018)是老年人群骨关节疾病的危险因素。结论河南省老年人群骨关节疾病与性别、BMI和中心性肥胖相关,应对老年人群中女性、超重或肥胖和中心性肥胖者开展针对性健康教育及综合干预。 展开更多
关键词 关节疾病 骨关节炎 骨关节病 老年人 人口特征 影响因素分析 河南
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Analysis of Driving Factors of Grain Output in Henan Province Based on Grey Correlation Model 被引量:1
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作者 贺振 《Agricultural Science & Technology》 CAS 2009年第3期123-126,147,共5页
Henan Province is an important grain production base, whose stable production is related to the economic development and social stability significantly. To summarize the primary factors of grain producing, we used gre... Henan Province is an important grain production base, whose stable production is related to the economic development and social stability significantly. To summarize the primary factors of grain producing, we used grey correlation analysis method to analyze 10 correlative factors such as grain yield, grain yield per unit area, effective irrigated area, rural employed persons, grain planting area, consumption of chemical fertilizer in 25 years. The results showed order of synthetic degree of incidence: effective irrigated area>rural electricity consumption>consumption of chemical fertilizer>disaster crop area>grain yield per unit of area>total power of agricultural machinery>afflicted crop area>grain planting area>number of the rural employed persons. Finally, according to synthetic degree of incidence between influential factors and total grain output respectively, a series of measures and the suggestions was proposed for grain production in Henan Province, which will also provide the scientific basis and help for the government correct decision-making. 展开更多
关键词 Grain yield Grey correlation analysis Driving force henan Province
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A New Species of the Genus Simulium (Diptera:Simuliidae) from Henan Province
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作者 温小军 韦静 陈汉彬 《Entomotaxonomia》 CSCD 北大核心 2007年第4期290-292,共3页
In the present paper, a new species, Simulium (Nevermannia) henanense sp. nov., from Henan, China, is described. The type specimens are deposited in the Department of Biology of Guiyang Medical College.
关键词 DIPTERA SIMULIIDAE SIMULIUM new species henan
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Investigation and Analysis of Continuous Cropping of Flue-cured Tobacco in Henan Province
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作者 陈继峰 蔡凯旋 +4 位作者 孙会 赵松辉 刘洪源 石礼森 郑亚楠 《Agricultural Science & Technology》 CAS 2016年第8期1808-1812,1888,共6页
The continuous cropping of flue-cured tobacco in the major producing areas of Henan Province by designing questionnaire, fieldwork, enquiry and phone calls, mails, and other forms, the data were obtained then classifi... The continuous cropping of flue-cured tobacco in the major producing areas of Henan Province by designing questionnaire, fieldwork, enquiry and phone calls, mails, and other forms, the data were obtained then classified and analyzed. The results showed that the main planting areas of flue-cured tobacco were in Nanyang, Xuchang, Luoyang, Sanmenxia, Pingdingshan, and Luohe where were the major producing areas of succession cropping of flue-cured tobacco with percentage of 20%-40% for three years and over three years, and a few places up to 50%. Morbidity was common with wide distribution, and the main diseases were black shank, viral disease, and black rot. It proved that tobacco was not suitable for continuous cropping. Both of tobacco disease and pest rate and mortality significantly increased by more than 40% under continuous cropping for three years and over three years, and the yield and quality of flue-cured tobacco also decreased after continuous cropping. For many places, the tobacco yield started to decrease in the second year of continuous cropping, and after three-year cropping, the yield decreased in the range of 9%-24%. Continuous cropping for a long time would make a serious decline in the quality of tobacco, resulting in non-economic benefits. Therefore, in order to reduce the occurrence of diseases and economic loss in tobacco production, it is recommended to avoid continuous cropping, or to adopt appropriate measures to control tobacco continuous cropping obstacles in the unavoidable case. 展开更多
关键词 Flue-cured tobacco Continuous cropping YIELD QUALITY Diseases and pests INVESTIGATION henan province
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Pedigree and Trait Analysis of Soybean Varieties Registered in Henan Province
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作者 王树峰 卢为国 李卫东 《Agricultural Science & Technology》 CAS 2015年第11期2471-2475,共5页
To elucidate the genetic relationship of the soybean varieties registered in Henan province, we analyzed the pedigrees, the major agronomic traits, and the eco- nomic traits of 74 soybean varieties registered in Henan... To elucidate the genetic relationship of the soybean varieties registered in Henan province, we analyzed the pedigrees, the major agronomic traits, and the eco- nomic traits of 74 soybean varieties registered in Henan province from 1985 to 2012, with reference to experience and technologies beneficial to breeding. The resuits indicated that these varieties originated from 113 parents, and positive correla- tion between the yield and the number of original parents was significant. In the major agronomic traits, the growth stage was about 106 days with relatively small variation, while the final height varied largely among these varieties. Among the fac- tore affecting the final yield, the pod number per plant exhibited an increasing trend, while the variation of 100-grain weight was relatively small. More than 50% of the 113 original parents came from Henan Province and its neighbor provinces, and the genetic relationship among the registered varieties was too close. The rational criteria of yield components of soybean varieties in Henan Province should be as fol- lows: the pod number per plant was about 48. 6, with 100-grain weight ranging from 17.55 g to 21.80 g. 展开更多
关键词 SOYBEAN PEDIGREE Source of parent Agronomic characters Economic characters henan Province
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An Analysis on Utilization of Wheat Varieties in Henan Province
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作者 刘万代 曹廷杰 刘小勐 《Agricultural Science & Technology》 CAS 2017年第12期2291-2294,共4页
The new wheat varieties with more than 6.67x104 hm2 of planting area in Henan Province during 2007-2017 were analyzed. The results showed that in the past eleven years, there were total 43 varieties from 23 breeding u... The new wheat varieties with more than 6.67x104 hm2 of planting area in Henan Province during 2007-2017 were analyzed. The results showed that in the past eleven years, there were total 43 varieties from 23 breeding units of which the annual planting areas were more than 6.67x104 hm2. Among them, the annual planting areas of 13 varieties from 7 breeding units exceeded 3.33x10 hm2. The total cultivation area of 43 wheat varieties accounted for about 80% of the total wheat cultivation area in Henan in that year. Most of the varieties come from provincial universities and research institutes and municipal agricultural academies, Zhengmai 9023 was the spring wheat variety that had the largest annual and accu- mulated cultivation area, and Aikang 58 was the semi-winter wheat cultivar with the largest annual and accumulated planting area. Semi-winter varieties were the domi- nator. Among the wheat varieties planted in large area in Henan Province, medium- gluten and state-approved varieties are dominant; and provincial and municipal academies are the breeders of the major wheat cultivars in Henan. 展开更多
关键词 henan Wheat variety Planting area
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Experimental Summary and Enlightenment of Urban and Rural Integration in Henan Province
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作者 张竟竟 陈文峰 +1 位作者 郭志富 鲁亚娟 《Agricultural Science & Technology》 CAS 2015年第3期622-625,共4页
By means of investigation and research of the 7 cities of the urban and rural integration in Henan Province, the paper summarizes five aspects of urban and rural integration in Henan Province in common from the social... By means of investigation and research of the 7 cities of the urban and rural integration in Henan Province, the paper summarizes five aspects of urban and rural integration in Henan Province in common from the social and economic conditions, spatial characteristics, dynamic mechanism, organization form, security measures: higher level of economic development, the selective advantage of location, the power mechanism characteristics of taking the government as the main body from top to bottom, the organization form of strengthen the construction of new rural area and industrial agglomeration area construction, the security measures of innovation mechanism system.The main sticking point to urban and rural integrition is the capital input and output, the rural collective economic power shortage problem , the problem of sustainable development of new rural community. A useful reference is playing the active role of rural cadre and masses initiative to promote the integration of urban and rural by injection power source from bottom to top; much channel solves problem of farmer employment according to local conditions; improve rural economy from hematopoietic function rely on industry development. 展开更多
关键词 The integration of urban and rural Construction of new countryside henan Province
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Remote Sensing Dynamic Monitoring System for Agricultural Disaster in Henan Province Based on Multi-source Satellite Data
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作者 刘婷 王来刚 +1 位作者 左守亭 杨春华 《Agricultural Science & Technology》 CAS 2013年第1期155-161,共7页
Using 3S technology, relying on earth-space three-dimensional agriculture disaster monitoring network, remote sensing monitoring model for agricultural disaster in Henan Province was established, and agricultural disa... Using 3S technology, relying on earth-space three-dimensional agriculture disaster monitoring network, remote sensing monitoring model for agricultural disaster in Henan Province was established, and agricultural disaster monitoring system plat- form of Henan Province based on multi-souroe satellite data was further constructed, which realizes dynamic monitoring of agricultural disasters in Henan Province (drought, flood, snow cover and straw burning). 展开更多
关键词 Agricultural disaster Remote sensing monitoring 3S technology System application henan Province
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The Application of ARIMA Model in Forecasting of PDSI in Henan Province
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作者 厉玉昇 《Agricultural Science & Technology》 CAS 2016年第3期760-764,共5页
[Objective] The aim was to establish drought forecasting model with high precision. [Method] With an ARIMA regression model, the research performed Palmer Drought mode(PDSI) time series modeling analysis of Henan Pr... [Objective] The aim was to establish drought forecasting model with high precision. [Method] With an ARIMA regression model, the research performed Palmer Drought mode(PDSI) time series modeling analysis of Henan Province based on PDSI time series and DPS(Data Processing Software) in order to build drought forecasting model. [Result] It is feasible to perform drought forecasting with appropriate parameters. [Conclusion] ARIMA model is practical and more precise in PDSI-based drought analysis and forecasting. 展开更多
关键词 ARIMA model PDSI Forecasting APPLICATION henan Province
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Study on Land Use Regionalization in Henan Province
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作者 田燕 《Agricultural Science & Technology》 CAS 2017年第11期2139-2143,2184,共6页
According to the natural ecology and socio-economic conditions in Henan Province, a land use regionalization index system with 6 factors and 24 factor layers was constructed by combining with the characteristics of la... According to the natural ecology and socio-economic conditions in Henan Province, a land use regionalization index system with 6 factors and 24 factor layers was constructed by combining with the characteristics of land use in Henan Province. Expert scoring method was used to determine the weights of the indicators. Based on the similarities and differences of these factors in the index system at county (city, district) levels, hierarchical clustering method was used to make the quantitative analysis to the land use regionalization in Henan Province. And constrastive analysis and qualitative analysis were made to the regionalization scheme by combining with the acutal conditions in the counties (cities, districts), and finally, Henan Province was classified into 6 regions. 展开更多
关键词 Land use regionalization Index system Hierarchical clustering analysis method henan Province
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Temporal and Spatial Analysis of Thunderstorms in 46 Years in Henan Province 被引量:3
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作者 韦丹 肖稳安 陈红兵 《Meteorological and Environmental Research》 CAS 2010年第9期42-45,共4页
By dint of natural orthogonal function(EOF) decomposition,correlation and trend analysis methods,the temporal and spatial variation characteristics of thunderstorms in recent 46 years in Henan Province were analyzed.T... By dint of natural orthogonal function(EOF) decomposition,correlation and trend analysis methods,the temporal and spatial variation characteristics of thunderstorms in recent 46 years in Henan Province were analyzed.The result showed that the thunderstorms in Henan Province decreased gradually from the northwest region to the southeast region and the frequency of thunderstorms in the southeast area was relatively high.The thunderstorm intensity area was in its horizontal distribution.Thunderstorms acted relative actively in 60s and tended to dwindle in the end of 80s.While in recent years,the thunderstorms tended to increase and started act frequently.Since March to August in every year,thunderstorms multiplied in each region and decreased after September.The period between 16:00 to 20:00 was the high peak hours of thunderstorms every year.Thunderstorms distribution in Henan Province had pretty good consistence,increasing and decreasing at the same time.The annual variation of thunderstorms showed an unobvious decreasing tendency. 展开更多
关键词 THUNDERSTORM Temporal-spatial variation henan Province China
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Spatial-temporal Evolution and Driving Force of Cultivated Land Quality in Henan Province
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作者 宋艳华 《Agricultural Science & Technology》 CAS 2017年第11期2106-2112,2126,共8页
The purpose of this study was to find out the spatial-temporal rules and driving force of cultivated land quality in Henan Province in the last ten years. Agricultural land grading factor evaluation was used to evalua... The purpose of this study was to find out the spatial-temporal rules and driving force of cultivated land quality in Henan Province in the last ten years. Agricultural land grading factor evaluation was used to evaluate the cultivated land quality of 2002 and 2012 in Henan Province, and to research the change laws. Method of correlation coefficient was employed to select the driving forces affecting cultivated land quality evolution. The results indicated that the cultivated land quality in Henan Province increased slightly in the last ten years in general, and in spatial there were unchanged regions, increased regions and decreased regions. The cultivated land quality in spatial presented the trend of good becoming better, bad becoming worse, which should be highly valued in cultivated land quality protection and management. Land development and consolidation projects had significant contributions to increasing the cultivated land quality. Driving forces between the sudden change regions and gradual change regions were significantly different. The paper concluded that the research on the spatial-temporal evolution and driving force of cultivated land quality based on cultivated land quality evolution had important academic significance and practical value. 展开更多
关键词 Cultivated land quality Spatial-temporal evolution Driving force Sudden change region Gradual change region henan Province
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Green Space System Planning of Huaiyang County in Henan Province 被引量:1
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作者 范乃娟 何斌 王鹏飞 《Journal of Landscape Research》 2010年第1期1-5,共5页
The characteristics of small cities in Henan Province were summarized in this study, with Huaiyang County as an example, guiding concepts, goals and contents of green space system planning of county-level cities in He... The characteristics of small cities in Henan Province were summarized in this study, with Huaiyang County as an example, guiding concepts, goals and contents of green space system planning of county-level cities in Henan Province were analyzed through reviewing the general situation of its green space system and the planning of green space system in the construction of garden cities. 展开更多
关键词 henan PROVINCE SMALL CITIES Huaiyang COUNTY Green space system PLANNING
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