Sample records for 规划管理 (program management)
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7

植被覆盖度和综合治理对纸坊沟流域土壤氮素流失的影响(英文)

Zhang, Xingchang(张兴昌); Shao, Mingan(邵明安)

[中文摘要]:同小流域土壤侵蚀一样,小流域土壤氮素随洪流流失也受到植被覆盖度的影响,通常经过调整小流域内土地利用结构以达到控制水土流失。该研究以8.27 km2纸坊沟流域和1:400比例流域模型为研究对象,研究植被覆盖度和综合治理对纸坊沟流域土壤氮素流失的影响。结果表明:在模拟降雨下,当流域植被覆盖度分别为60%、40%、20%和0时,流域模型铵态氮流失量分别为87.08、44.31、25.16和13.71 kg/km2,硝态氮为85.50、74.05、63.95和56.23 kg/km2,全氮为0.81、1.18、1.98和7.51 t/km2;在自然降雨下,1998年与199...

DRIVER (Chinese)

13

Species Diversity Based on Vertical Structure as Indicators of Artificial Restoration for Coniferous Forests in Southwest China Species Diversity Based on Vertical Structure as Indicators of Artificial Restoration for Coniferous Forests in Southwest China

ZHANG;Qiaoying;ZHANG;Yunchun;Eshetu;Yirdaw;LUO;Peng;YI;Shaoliang;Wu;Ning(ZHANG)

Supported by the National Natural Science Foundation of China (90511008), the Knowlege Innovation Program of Chinese Academy of Sciences (KZCX2- SW-123-5), Key Project of Chinese Academy of Sciences Knowledge Innovation Program, International Cooperation Program of Academy of Finland (WAMEC) and the...

DRIVER (Chinese)

85

Clinical and pathological characteristics of Chinese patients with BRCA related breast cancer

Kwong, Ava; Wong, P. L.; Wong, N. H.; Law, F. B. F.; Ng, O. K. E.; Tang, H. Y.; Chan, K. W.; Suen, K. T. D.; Choi, C.

Breast cancers related to BRCA mutations are associated with particular biological features. Here we report the clinical and pathological characteristics of breast cancer in Chinese women with and without BRCA mutations and of carriers of BRCA1 mutations compared to BRCA2 mutations. Two hundred and ...

DRIVER (Chinese)