Key;
Laboratory;
of;
Lake;
Sedimentation;
and;
Environment,;
Chinese;
Academy;
of;
Sciences,;
Nanjing;
210008,;
China;
Key;
Laboratory;
of;
Lake;
Sedimentation;
and;
Environment,;
Chinese;
Academy;
of;
Sciences,;
Nanjing;
210008,;
China;
Key;
Laboratory;
of;
Lake;
Sedimentation;
and;
Environment,;
Chinese;
Academy;
of;
Sciences,;
Nanjing;
210008,;
China;
Longgan; Lake,; nutrient; evolution,; controlling; factor,; climate,; human; activities.;