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Life satisfaction approach to farmers' compensation for land acquisition:empirical study from the suburbs of Wuhan City 被引量:1
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作者 weiyan hu Xuelong Zhang +3 位作者 Yan Song Long Shen Jin Liu Anlu Zhang 《Chinese Journal of Population,Resources and Environment》 2014年第4期316-323,共8页
Farmers' compensation for land acquisition is not only critical to increasing their income and to playing a pivotal role in maintaining rural stability,but also to the promotion of sustainable land use.Based on an... Farmers' compensation for land acquisition is not only critical to increasing their income and to playing a pivotal role in maintaining rural stability,but also to the promotion of sustainable land use.Based on analysis of Chinese land acquisition policy under the Land Management Law,which provides principles or guidelines for determining compensation according to agricultural land use in regard to farmers' previous quality of life,the Life Satisfaction Approach is introduced in this article to evaluate farmers' compensation for land acquisition.Employing data from a questionnaire survey on 346 farming households in Wuhan Suburbs,this article examined the influence of farmland on farmers' life satisfaction and evaluated the level of compensation for land acquisition.Results show that farmland has a significantly positive impact on life satisfaction,which fell by 0.033 on a five-point scale following a reduction farmland by of 1 mu.Respondents were willing to accept approximately RMB 3066.44 annual household income for the loss of 1 mu farmland;the level of compensation after discounting by 6.2%is RMB 750,000 per hectare.It was found in a further comparative study that the level of farmers' compensation for land acquisition is decidedly low,and it was also shown that their compensation standards,as well as the actual compensation,could be substantially improved by expanding economic compensation to non-economic compensation to embody farmland multifunction in terms of production and non-production against farmers' previous quality of life.This article proposes a compensation model that enriches the content of land acquisition compensation,extends the current literature on measuring compensation,and provides economic theory bases for increasing compensation standards and improving policies related to land acquisition.We consider that if this compensation model is applied,it could raise the cost of land acquisition and improve usage of land,reduce the speed of rural-urban land conversion,and improve farmers' well-being. 展开更多
关键词 farmers’ COMPENSATION land acquisition life SATISFACTION APPROACH SUBURBS of Wuhan City
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大狼毒根茎中对胰腺癌SW1990细胞具有毒性的二萜
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作者 朱红波 王吉 +5 位作者 胡炜彦 周堂 林芷淇 张荣平 耿长安 陈兴龙 《有机化学》 SCIE CAS CSCD 北大核心 2024年第6期1929-1937,共9页
采用硅胶柱色谱、MCI柱色谱、Sephadex LH-20柱色谱和半制备高效液相色谱等分离方法对大狼毒根茎的化学成分进行研究,通过高分辨电喷雾电离质谱(HR-ESI-MS)、核磁共振(NMR)和计算电子圆二色谱(ECD)等方法鉴定了8个二萜类成分,包括2个新... 采用硅胶柱色谱、MCI柱色谱、Sephadex LH-20柱色谱和半制备高效液相色谱等分离方法对大狼毒根茎的化学成分进行研究,通过高分辨电喷雾电离质谱(HR-ESI-MS)、核磁共振(NMR)和计算电子圆二色谱(ECD)等方法鉴定了8个二萜类成分,包括2个新的对映松香烷型二萜类化合物(1~2)、4个已知对映松香烷型二萜(3~6)和2个已知续随子烷型二萜(7~8).(7R,8S)-7,8-二羟基-17-降碳对映松香烷-13(14)-烯-15-酮(1)为C-17位降碳的松香烷型二萜类成分,化合物2为松香烷型二萜内酯类成分.细胞毒活性筛选表明,化合物7对胰腺癌SW1990细胞具有明显的毒性,IC50为(44.97±9.16)μmol/L;并且能剂量依赖性地促进SW1990细胞的前期凋亡,通过降低胰腺癌细胞内抑制凋亡蛋白Bcl-2的表达发挥抑制肿瘤细胞作用. 展开更多
关键词 大狼毒 对映松香烷型二萜 续随子烷型二萜 SW1990细胞 细胞毒性 BCL-2
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