ＴｒｅｅｒｉｎｇａｎａｌｙｓｉｓｆｏｒｄｅｔｅｒｍｉｎａｔｉｏｎｏｆｐｏｌｌｕｔｉｏｎｈｉｓｔｏｒｙｏｆＣｈｅｎｇｄｅＣｉｔｙ，ｎｏｒｔｈＣｈｉｎａ￥ＪｉａｎｇＧａｏｍｉｎｇ（ＩｎｓｔｉｔｕｔｅｏｆＢｏｔａｎｙ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉ.........

Although carbon(C),nitrogen(N),and phosphorous(P)stoichiometric ratios are considered good indicators of nutrient excess......

以山西黑茶山3种不同干扰强度的油松天然林为研究对象，采用g（r）函数点格局方法，分析不同干扰强度下，油松天然林径级结构和多样性差异，以......

ＡｎａｌｙｓｉｓｏｆｔｈｅＶｏｌａｔｉｌｅＣｏｎｓｔｉｔｕｅｎｔｓｏｆＰｉｎｕｓＴａｂｕｌａｅｆｏｒｍｉｓＣａｒｒ．ＰｉｎｅＣｏｎｅｓＺＨＡＮＧＷｅｉ－ｈｕａａｎｄＨＯＵＤｏｎｇ－ｙａｎ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｌｒｙ，ＡｎｓｈａｎＮｏｒ.........

In order to know well the relationship between vegetation and water in North China, especially Beijing, with exceptional......